OTC Medications

OTC (Over-the-Counter) Medications

Definition

OTC medicines are drugs that are considered safe and effective for the treatment of minor ailments and can be sold by a pharmacist without a valid prescription.

Self-Medication

• Selection and use of medicines by individuals to treat self-recognized minor illnesses.
• Promoted by World Health Organization for quick relief where healthcare access is limited.
• Also called responsible self-medication when used appropriately.

Classification of Medicines

1. Prescription Medicines

• Dispensed only with a valid prescription.

2. Pharmacist-Only Medicines

• Supplied by pharmacists based on professional judgment.

3. OTC Medicines

• Available without prescription.
• Used for minor ailments such as:
• Headache
• Fever
• Cold
• Indigestion

Advantages of OTC Medicines

Advantages

1. Safe and effective when used correctly.
2. Approved by regulatory authorities.
3. No consultation fee.
4. Saves waiting time.
5. Easily accessible.
6. Cost-effective.
7. Reduces burden on healthcare facilities.

OTC Drug Categories

1. H₂-Receptor Antagonists

Uses

• Heartburn
• Acid indigestion
• Sour stomach

Examples

Drug	Dose
Cimetidine	200 mg BD
Famotidine	10–20 mg daily
Nizatidine	75 mg BD
Ranitidine*	75 mg BD

Note: Do not use for more than 2 weeks without medical advice.

Mnemonic: CFNR = Cimetidine, Famotidine, Nizatidine, Ranitidine

2. Acne Preparations

Example

• Benzoyl Peroxide (2.5%, 5%, 10%)

Uses

• Mild to moderate acne

Directions

• Apply once or twice daily.
• Reduce frequency if irritation occurs.

3. Allergy and Cold Preparations

Antihistamines

Drug	Dose
Chlorpheniramine	4 mg every 4–6 h
Brompheniramine	4 mg every 4–6 h
Clemastine	1.34 mg every 12 h
Diphenhydramine	25–50 mg every 4–6 h

Key Point

• Relieve symptoms of allergic rhinitis and hay fever.
• Diphenhydramine causes significant drowsiness.

Mnemonic: "CBDC"

• Chlorpheniramine
• Brompheniramine
• Diphenhydramine
• Clemastine

4. Analgesics and Antipyretics

Uses

• Pain
• Fever

Drug	Dose
Aspirin	300–600 mg every 4–6 h
Acetaminophen (Paracetamol)	300–600 mg every 4–6 h
Ibuprofen	200–400 mg every 4–6 h
Naproxen	200 mg every 8–10 h
Ketoprofen	12.5 mg every 4–6 h

Important Points

• Acetaminophen has no anti-inflammatory action.
• Suitable liquid formulations available for children.

Mnemonic: AAINK

• Aspirin
• Acetaminophen
• Ibuprofen
• Naproxen
• Ketoprofen

5. Antacids

Example

• Magnesium hydroxide + Aluminum hydroxide

Uses

• Hyperacidity
• Gastric discomfort

Advantage

• Balanced combination reduces constipation and diarrhea.

6. Anthelmintics

Example

• Pyrantel Pamoate

Dose

• 11 mg/kg

Important Points

• Treat all household members.
• Maintain environmental hygiene to prevent reinfection.

7. Antidiarrheal Agents

A. Bismuth Subsalicylate

• 600 mg four times daily

B. Loperamide

• Initial: 4 mg
• Then: 2 mg after each loose stool
• Maximum: 16 mg/day

Important Points

• Loperamide is a synthetic opioid that does not cross the CNS.
• Avoid in febrile diarrhea.

Mnemonic: BL

• Bismuth
• Loperamide

8. Topical Antifungal Preparations

Drug	Formulation
Clotrimazole	1% cream, vaginal insert
Tolnaftate	1% cream/solution/powder
Miconazole	2% cream, vaginal tablet

Uses

• Tinea pedis
• Tinea cruris
• Tinea corporis
• Candidiasis

Mnemonic: CTM

• Clotrimazole
• Tolnaftate
• Miconazole

9. Topical Anti-inflammatory Preparations

Example

• Hydrocortisone 0.5–1%

Uses

• Insect bites
• Allergic dermatitis
• Contact dermatitis
• Hemorrhoids

Application

• Apply 3–4 times daily.

10. Anti-Seborrheal Agents

Examples

Drug	Strength
Selenium Sulfide	1–2%
Zinc Pyrithione	1–2%

Uses

• Dandruff
• Seborrheic dermatitis

Directions

• Apply to scalp for 5–10 minutes.
• Use 2–3 times weekly.

Mnemonic: SZ

• Selenium sulfide
• Zinc pyrithione

11. Antitussives

Examples

Drug	Dose
Codeine + Guaifenesin	10–20 mg every 4–6 h
Dextromethorphan + Guaifenesin	10–20 mg every 4 h or 30 mg every 6 h

Uses

• Dry cough

Mnemonic: CD

• Codeine
• Dextromethorphan

12. Decongestants

Topical

• Oxymetazoline
• Xylometazoline
• Phenylephrine

Oral

• Pseudoephedrine
• Phenylpropanolamine

Uses

• Nasal congestion
• Rhinorrhea

Key Point

• Pseudoephedrine has the least CNS stimulation.

Mnemonic: OXPP

• Oxymetazoline
• Xylometazoline
• Phenylephrine
• Pseudoephedrine

13. Expectorants

Example

• Guaifenesin

Use

• Facilitates mucus removal from respiratory tract.

Important Point

• Only expectorant with good evidence of efficacy.

14. Laxatives

Types

A. Bulk Forming

• Increase stool bulk.

B. Stool Softeners

• Docusate sodium.

C. Saline Laxatives

• Used for acute constipation.

Important Point

• Bulk-forming agents and stool softeners are safest for long-term use.

Quick Revision Table

Category	Example
H₂ Blocker	Famotidine
Acne Drug	Benzoyl peroxide
Antihistamine	Chlorpheniramine
Analgesic	Paracetamol
Antacid	Mg(OH)₂ + Al(OH)₃
Anthelmintic	Pyrantel pamoate
Antidiarrheal	Loperamide
Antifungal	Clotrimazole
Anti-inflammatory	Hydrocortisone
Anti-seborrheal	Selenium sulfide
Antitussive	Dextromethorphan
Decongestant	Pseudoephedrine
Expectorant	Guaifenesin
Laxative	Docusate sodium

Exam Mnemonic for OTC Categories

"Happy Acne Allergies And Antacids Avoid Diarrhea; Fungi Hate Seborrhea, Tough Colds Expect Laxatives."

(H₂ blockers → Acne → Allergy → Analgesics → Antacids → Anthelmintics → Diarrheals → Antifungals → Hydrocortisone → Seborrhea → Antitussives → Decongestants → Expectorants → Laxatives)

15. Pediculicides (Anti-Lice Agents)

Uses

Treatment of head lice (Pediculosis).

Examples

1. Permethrin 1%
2. Pyrethrins + Piperonyl Butoxide

Directions for Use

• Apply to dry hair and scalp.
• Wet entire scalp and hair thoroughly.
• Leave for 10 minutes.
• Add water, lather, and rinse.
• Avoid contact with eyes.
• Comb out nits (lice eggs).
• Repeat treatment if reinfestation occurs.

Counseling Points

• Wash combs, brushes, bedding, and clothing.
• Check family members for infestation.
• Avoid eye contact.

Mnemonic: PP = Permethrin + Pyrethrins

16. Sleep Aids

Example

Diphenhydramine

Dose

25–50 mg at bedtime

Mechanism

• First-generation antihistamine
• Produces CNS depression and sedation

Uses

• Temporary management of insomnia

Adverse Effects

• Drowsiness
• Dry mouth
• Dizziness

Counseling

• Avoid alcohol.
• Do not drive or operate machinery after use.

17. Smoking Cessation Aids

Examples

1. Nicotine
2. Nicotine Polacrilex (Nicotine Gum)

Uses

Helps reduce nicotine withdrawal symptoms during smoking cessation.

Important Points

• Requires gradual dose reduction (weaning).
• Follow instructions carefully.
• Quit rates are higher than placebo.

Counseling

• Do not smoke while using nicotine replacement therapy.
• Follow prescribed schedule for tapering.

Hidden Ingredients in OTC Products

Important Note

Many OTC medicines contain potent ingredients that patients may not recognize.

Problems

• Drug duplication
• Drug interactions
• Diagnostic confusion
• Increased adverse effects

Pharmacist's Role

• Review all prescription and OTC medicines.
• Identify duplicate ingredients.
• Prevent interactions.

OTC Counseling Questions

Purpose

To collect adequate information before recommending an OTC product.

Patient Assessment Questions

Medication History

• Which prescription medicines do you take regularly?
• Which OTC medicines are you currently using?
• Do you use herbal medicines?

Disease History

• What symptoms are you experiencing?
• How long have you had these symptoms?
• Have you consulted a doctor?

Previous Experience

• Have you used this medicine before?
• Did you experience any side effects?

Demographic Information

• Age
• Sex
• Pregnancy status
• Breastfeeding status
• Allergies
• Weight

Mnemonic: WWHAM

• W – Who is the patient?
• W – What are the symptoms?
• H – How long have symptoms been present?
• A – Action taken already?
• M – Medication being taken?

Patient Counseling Steps

Step 1: Introduction

The pharmacist should:

• Introduce himself/herself.
• Establish rapport.
• Explain available assistance.
• Discuss appropriate OTC product selection.

Step 2: Information Collection

Gather Information About

A. Patient Factors

• Age
• Sex
• Pregnancy
• Breastfeeding
• Weight
• Allergies
• Social history

B. Disease Factors

• Present illness
• Symptoms
• Duration of illness
• Past medical history
• Coexisting diseases

C. Drug Factors

• Current medications
• Previous medication history
• OTC drug history

Information to be Provided During Counseling

1. Drug Name

• Generic name
• Brand name

2. Dosage Information

• Dose
• Route
• Dosage form
• Frequency

3. Special Instructions

• Preparation
• Administration
• Precautions

4. Self-Monitoring

• How to monitor effectiveness
• Warning signs requiring medical attention

5. Storage Conditions

• Temperature
• Moisture protection
• Child safety

6. Drug Interactions

• Drug-drug interactions
• Drug-food interactions
• Contraindications

Counseling for Special Dosage Forms

The pharmacist should demonstrate proper use of:

• Inhalers
• Eye drops
• Ear drops
• Nasal sprays
• Ointments
• Patches
• Lozenges
• Gargles

Patients should repeat the demonstration to ensure understanding.

Counseling Points for NSAIDs

Common OTC NSAIDs

• Paracetamol*
• Ibuprofen
• Diclofenac

(*Paracetamol is technically an analgesic-antipyretic, not a true NSAID.)

Uses

• Fever
• Headache
• Musculoskeletal pain
• Joint pain

Important Adverse Effects

• Gastric irritation
• Peptic ulcer disease
• Renal impairment

Counseling Points

✓ Take after food.

✓ Drink plenty of water.

✓ Consult a doctor if symptoms persist.

✓ Asthmatic patients should use cautiously.

✓ Avoid combining aspirin with other NSAIDs without medical advice.

✓ Inform healthcare providers about NSAID use.

✓ Store safely away from children.

Warning Signs

Seek immediate medical care if:

• Facial swelling
• Leg swelling
• Reduced urine output
• Severe allergic reactions
• Confusion

Counseling Points for Antibiotics

Key Principle

Antibiotics should be used only under medical supervision.

Counseling Points

✓ Take at prescribed times.

✓ Complete the full course.

✓ Store properly.

✓ Keep away from children.

✓ Do not double doses after a missed dose.

✓ Report adverse effects promptly.

✓ Consult pharmacist regarding interactions.

Important Message

Incomplete antibiotic courses can contribute to antimicrobial resistance.

Counseling Points for Cold and Cough Medicines

Uses

Relief of:

• Sneezing
• Runny nose
• Nasal congestion
• Cough

Counseling Points

✓ May cause drowsiness.

✓ Avoid driving and operating machinery.

✓ Can cause dry mouth, nose, and throat.

✓ Sugar-free candies or ice chips may help relieve dryness.

✓ Decongestants may cause insomnia and restlessness.

✓ Take the last dose several hours before bedtime.

✓ Consult a healthcare professional before use with:

• CNS depressants
• MAO inhibitors

Special Populations

• Pregnant and breastfeeding women should seek medical advice before use.

Role of Community Pharmacist in OTC Dispensing

Responsibilities

1. Patient Education

• Promote safe medication use.
• Improve adherence.

2. Assessment of Minor Ailments

Common complaints:

• Headache
• Sore throat
• Common cold
• Cough
• Diarrhea
• Dysmenorrhea
• Body aches

3. Identification of Drug Interactions

Review all medications before recommending OTC products.

Clinical Example 1

Hypertensive Patient with Cold

Patient:

• Hypertension
• Taking antihypertensive drugs

Avoid:

• Phenylpropanolamine-containing cold preparations

Reason:

• May increase blood pressure.

Clinical Example 2

Ciprofloxacin + Antacid

Problem:

• Antacids reduce absorption of ciprofloxacin.

Counseling:

• Maintain at least 2-hour gap before or 4–6-hour gap after antacid administration.

Result:

• Better antibiotic effectiveness.

Exam-Oriented Quick Revision

Pediculicide

→ Permethrin 1%

Sleep Aid

→ Diphenhydramine

Smoking Cessation

→ Nicotine gum

OTC Assessment Tool

→ WWHAM

Common OTC Interaction

→ Ciprofloxacin + Antacid

NSAID Counseling

→ Take after food and with plenty of water

Cold Medicine Counseling

→ May cause drowsiness; avoid driving

Community Pharmacist Role

→ Assess, Counsel, Prevent Interactions, Monitor Outcomes

5-Mark Question: Role of Community Pharmacist in OTC Dispensing

1. Assess patient symptoms.
2. Obtain medication history.
3. Identify contraindications and interactions.
4. Recommend appropriate OTC medicine.
5. Counsel on dosage, administration, storage, and adverse effects.
6. Refer to a physician when necessary.
7. Promote rational and safe use of medicines.

HEALTH SCREENING SERVICES

INTRODUCTION

Health screening is a process used to identify unrecognized diseases or conditions in apparently healthy individuals before symptoms appear.

Screening involves the use of rapid tests or examinations to identify people who may have a disease so that early treatment can be started and disease progression can be prevented.

Early screening leads to early diagnosis and treatment, resulting in a better prognosis. For example, early control of hyperglycemia and hypertension can prevent complications.

Health screening services are healthcare services provided by healthcare professionals to the public and patients. Examples include:

• Blood glucose measurement using a glucometer
• Blood pressure measurement using a sphygmomanometer

SCOPE OF HEALTH SCREENING SERVICES

A person trained in health screening services can:

1. Work in hospitals
2. Work in pathology laboratories
3. Work in hospital and community pharmacies
4. Run their own laboratory
5. Join companies providing door-to-door health screening services
6. Provide services during disaster management
7. Provide services during pandemics and public health emergencies

IMPORTANCE OF HEALTH SCREENING SERVICES

• Helps identify diseases at an early stage
• Reduces mortality rate
• Reduces severity of disease
• Increases effectiveness of treatment
• Reduces treatment cost
• Provides peace of mind
• Prevents occurrence of high-risk diseases
• Saves patients’ time
• Helps avoid chronic complications through early detection
• Prevents adverse effects by early referral of undiagnosed cases

HEALTH SCREENING SERVICES FOR ROUTINE MONITORING

Health screening services help in routine monitoring and early detection of diseases.

Examples of Routine Health Screening

1. Blood Pressure Screening

Regular blood pressure monitoring helps detect hypertension, a major risk factor for:

• Heart disease
• Stroke
• Kidney disease

Early detection helps initiate treatment and lifestyle modifications.

2. Cholesterol Testing

Helps assess risk of cardiovascular diseases, especially in individuals with:

• Family history of heart disease
• Obesity
• Diabetes
• Smoking habits

3. Blood Glucose Monitoring

Important in diabetic patients to:

• Monitor glucose levels
• Adjust therapy
• Prevent complications such as:
• Neuropathy
• Nephropathy
• Retinopathy

4. Body Mass Index (BMI) Screening

Helps determine whether an individual is:

• Underweight
• Normal weight
• Overweight
• Obese

Useful in preventing obesity-related disorders.

5. Immunization

Vaccination protects individuals from infectious diseases such as:

• Influenza
• Pneumonia
• Shingles

MEASUREMENT OF BLOOD PRESSURE

A person is considered hypertensive if, on two or more consecutive measurements:

• Systolic Blood Pressure (SBP) ≥ 140 mmHg
• Diastolic Blood Pressure (DBP) ≥ 90 mmHg

Poor blood pressure control may cause:

• Cardiac damage
• Cerebrovascular damage
• Renal damage
• Ocular damage

These complications may lead to death.

Instrument Used

Sphygmomanometer

CLASSIFICATION OF BLOOD PRESSURE (JNC 7)

Category	SBP (mmHg)	DBP (mmHg)
Normal	<120	<80
Prehypertension	120–139	80–89
Hypertension Stage 1	140–159	90–99
Hypertension Stage 2	≥160	≥100

ROLE OF PHARMACISTS IN BLOOD PRESSURE SCREENING

Pharmacists can:

• Detect new hypertensive patients
• Help patients monitor BP regularly
• Improve medication adherence
• Prevent complications of hypertension
• Reduce workload on physicians

GUIDELINES FOR ACCURATE BLOOD PRESSURE MEASUREMENT

1. Patient should sit quietly for at least 5 minutes.
2. Back should be supported and arm kept at heart level.
3. Avoid smoking or caffeine 30 minutes before measurement.
4. Use an appropriate cuff size.
5. Place stethoscope over the brachial artery.
6. Inflate cuff to 30 mmHg above palpated SBP.
7. Deflate cuff at 2–3 mmHg/second.
8. First Korotkoff sound = SBP.
9. Disappearance of sound = DBP.
10. Take two readings 2 minutes apart and average them.
11. Confirm elevated BP on repeated visits before diagnosing hypertension.
12. Provide results verbally and in written form.
13. Refer patients with high BP to a physician.

MEASUREMENT OF CAPILLARY BLOOD GLUCOSE (CBG)

Capillary blood glucose monitoring helps identify abnormal glucose levels.

It is useful for:

• Patients with diabetes
• Individuals unable to monitor glucose themselves
• Detecting new diabetic cases

Pharmacists should not independently alter treatment based on readings. Results should be referred to a physician.

GLUCOMETER

A glucometer is a small electronic device used to measure capillary blood glucose.

Principle

Works on the colorimetric principle.

Procedure

1. Insert the test strip into the glucometer.
2. Ensure strip code matches machine code.
3. Clean finger using antiseptic/alcohol swab.
4. Prick finger using sterile lancet.
5. Place blood drop on test strip.
6. Result appears within 5–30 seconds.

INDICATIONS FOR BLOOD GLUCOSE SCREENING

Screening is useful in:

• Individuals anxious about diabetes
• Patients controlled by diet or oral hypoglycemic drugs
• Diabetic patients requiring monitoring
• Individuals with symptoms such as:
• Polyuria
• Polyphagia
• Weight loss
• Fatigue

BLOOD GLUCOSE SCREENING SHOULD NOT BE DONE IN

• Persons below 18 years unless prescribed by a doctor
• Persons with finger/nail infections
• Immunocompromised individuals
• Patients on immunosuppressant drugs

BLOOD GLUCOSE VALUES

Test	Normal Value
Fasting CBG	70–100 mg/dL
Postprandial CBG	110–150 mg/dL
Random CBG	100–150 mg/dL

BLOOD GLUCOSE INTERPRETATION

Category	Result (mg/dL)	Interpretation
Non-diabetic fasting	<80	Diabetes unlikely
Non-diabetic random	<99	Diabetes unlikely
Non-diabetic random	99–138	Further investigation required
Non-diabetic fasting	138–150	Refer to physician
Diabetic	>180	Needs medical attention

TECHNIQUE FOR MEASURING BLOOD GLUCOSE

1. Sterilize finger using alcohol swab.
2. Pierce skin using disposable lancet.
3. Apply blood drop onto test strip.
4. Glucometer detects glucose calorimetrically.
5. Reading appears within about 5 seconds.

Types of measurements:

• Fasting Blood Glucose (FBG)
• Random Blood Sugar (RBS)
• Postprandial Blood Sugar (PPBS)

Results should be communicated verbally and in written form, and patients with abnormal readings should be referred to a physician.

SCREENING OF LUNG FUNCTION – Corrected Notes

INTRODUCTION

Screening of lung function in community pharmacies can mainly be performed using:

1. Peak Flow Meter – measures Peak Expiratory Flow Rate (PEFR)
2. Spirometer – performs spirometry tests

These tests help assess respiratory function in diseases such as:

• Asthma
• Chronic Obstructive Pulmonary Disease (COPD)

1. MEASUREMENT OF PEAK EXPIRATORY FLOW RATE (PEFR)

During asthma and COPD, airway narrowing due to bronchoconstriction reduces airflow.

Peak Expiratory Flow Rate (PEFR) is used to assess lung function and airway obstruction.

It also helps:

• Monitor effectiveness of bronchodilators
• Assess severity of respiratory disease
• Guide treatment decisions

PEAK FLOW METER

A Peak Flow Meter is a small handheld device used to measure the maximum speed of expiration.

PEFR readings help determine:

• Lung functionality
• Severity of asthma symptoms
• Degree of airway obstruction
• Response to treatment

TECHNIQUE FOR MEASURING PEFR

1. Ensure the pointer is set to zero.
2. Ask the patient to stand or sit upright comfortably.
3. Hold the peak flow meter horizontally.
4. Keep fingers away from the pointer.
5. Ask the patient to take a deep breath.
6. Close lips tightly around the mouthpiece.
7. Blow out as hard and as fast as possible in a single breath.
8. Note the reading indicated by the pointer.
9. Reset the pointer to zero.
10. Repeat the procedure three times.
11. Record the highest reading.

INTERPRETATION OF PEFR VALUES

PEFR Value	Interpretation
80–100%	Airways normal; patient relatively symptom-free
50–80%	Caution required; condition worsening
<50%	Severe airway obstruction; emergency condition

Important Points

• Higher PEFR values indicate better airway function.
• Lower PEFR values indicate airway constriction.

PULMONARY FUNCTION TESTS (PFTs)

Various tests used to assess lung function include:

1. Spirometry
2. Body plethysmography and lung volume studies
3. Diffusion capacity tests
4. Airway reactivity tests
5. Six-minute walk test

In community pharmacies, the commonly used tests are:

• PEFR measurement
• Spirometry

2. SPIROMETRY

DEFINITION

Spirometry is a Pulmonary Function Test (PFT) used to assess respiratory function.

It helps:

• Diagnose lung diseases
• Monitor response to treatment
• Assess disease progression
• Guide treatment decisions

Spirometry measures all lung volumes except Residual Volume (RV).

INDICATIONS OF SPIROMETRY

Spirometry is indicated for:

1. Investigation of Respiratory Symptoms

Patients with:

• Cough
• Wheezing
• Breathlessness
• Crackles
• Abnormal chest X-ray findings

2. Monitoring Pulmonary Diseases

Such as:

• COPD
• Asthma
• Interstitial fibrosis
• Pulmonary vascular disease

3. Evaluation of Diseases with Respiratory Complications

Examples:

• Connective tissue disorders
• Neuromuscular diseases

4. Preoperative Evaluation

Before:

• Lung resection surgery
• Abdominal surgery
• Cardiothoracic surgery

5. Assessment of Individuals at Risk

Exposure to:

• Radiation
• Drugs/medications
• Occupational or environmental toxins

6. Post-Lung Transplant Monitoring

To assess:

• Acute rejection
• Infection
• Obliterative bronchiolitis

CALIBRATION OF SPIROMETER

1. Spirometers should be calibrated or calibration checked before use.
2. Calibration procedures vary with device type.
3. Follow manufacturer instructions carefully.
4. Some devices require manufacturer servicing if calibration is inaccurate.
5. Weekly biological control testing using a healthy individual is recommended.

TECHNIQUE/PROCEDURE OF SPIROMETRY

1. Patient takes a deep maximal inspiration.
2. Patient exhales:
• As hard as possible
• As fast as possible
3. Exhalation should continue until no air remains.
4. Encouragement improves test performance.
5. Patients with obstructive diseases may find forced expiration difficult.
6. Peak Expiratory Flow (PEF) is obtained from the FEV₁ and FVC maneuver.

SPIROMETRY MEASUREMENTS

Spirometry helps calculate:

1. Vital Capacity (VC)
2. Forced Expiratory Volume (FEV)
3. Forced Expiratory Flow (FEF)

1. VITAL CAPACITY (VC)

Vital Capacity includes:

a) Forced Vital Capacity (FVC)

• Total volume of air exhaled forcefully and rapidly after maximum inhalation
• Measured using dynamic spirometry

b) Slow Vital Capacity (SVC)

• Total volume of air exhaled slowly after maximum inhalation
• Measured using static spirometry

Clinical Importance

• In normal individuals, FVC and SVC are usually similar.
• In early COPD, FVC decreases before SVC.

2. FORCED EXPIRATORY VOLUME (FEV)

DEFINITION

FEV measures the amount of air exhaled during forced expiration over a specified time.

Measurements include:

• FEV₀.₅ → in 0.5 seconds
• FEV₁ → in 1 second (most clinically significant)
• FEV₃ → in 3 seconds
• FEV₆ → in 6 seconds

FEV₁/FVC RATIO

Used to assess airway obstruction.

Normal Individuals

Approximate exhalation:

• 50% of FVC in first 0.5 seconds
• 80% in first second
• 98% in 3 seconds

Obstructive Lung Disease

FEV₁/FVC ratio decreases depending on severity of obstruction.

COPD DIAGNOSIS AND SEVERITY (ATS/ERS/GOLD GUIDELINES)

Diagnosis

Indicates chronic airway obstruction.

Severity Grading

FEV₁ Value	Severity
≥80%	Mild
50–80%	Moderate
30–50%	Severe
<30%	Very severe/Respiratory failure

3. FORCED EXPIRATORY FLOW (FEF)

DEFINITION

FEF measures airflow rate during forced expiration.

Uses

·        Evaluates airflow in:

• Medium airways
• Small airways
• Bronchioles
• Terminal bronchioles

·        Detects obstruction in small airways, especially in:

• Acute severe asthma

CHOLESTEROL TESTING

DEFINITION

Cholesterol testing, also called a Lipid Profile Test, measures:

• Cholesterol levels
• Triglyceride levels

Cholesterol is essential for normal body function, but elevated levels increase the risk of:

• Heart disease
• Stroke

IMPORTANCE OF CHOLESTEROL TESTING

1. Heart Health Assessment

Helps assess cardiovascular risk.

2. Preventive Healthcare

Early detection helps prevent heart disease.

3. Treatment Monitoring

Monitors effectiveness of:

• Lifestyle changes
• Cholesterol-lowering medications

4. Identification of Associated Disorders

High cholesterol may indicate:

• Diabetes mellitus
• Hypothyroidism
• Liver disease

METHODS OF CHOLESTEROL TESTING

1. Blood Test (Lipid Profile)

Measures:

• Total cholesterol
• LDL cholesterol (“bad cholesterol”)
• HDL cholesterol (“good cholesterol”)
• Triglycerides

Blood may be collected:

• From a finger prick
• From a vein in the arm

2. Non-Fasting Lipid Profile

Patient does not need fasting before the test.

Advantages:

• Convenient
• Useful for routine screening

3. Point-of-Care Testing

Performed in pharmacies using portable devices.

Advantages:

• Quick results
• Immediate counseling possible

INTERPRETATION OF CHOLESTEROL VALUES

Parameter	Unit	Optimal / Heart-Healthy	Intermediate / At-Risk	High / Dangerous
Total Cholesterol	mg/dL	< 200	200 – 239	> 239
	mmol/L	< 5.2	5.2 – 6.2	> 6.2
LDL Cholesterol (calculated)	mg/dL	< 130	130 – 159	> 159
	mmol/L	< 3.36	3.36 – 4.11	> 4.11
HDL Cholesterol	mg/dL	> 60	40 – 60	< 40
	mmol/L	> 1.55	1.03 – 1.55	< 1.03
Triglycerides	mg/dL	< 150	150 – 199	> 199
	mmol/L	< 1.69	1.69 – 2.25	> 2.25
Non-HDL-C (calculated)	mg/dL	< 130	130 – 159	> 159
	mmol/L	< 3.3	3.3 – 4.1	> 4.1
TG : HDL Ratio (calculated)	Ratio	< 3	3 – 3.8	> 3.8
	mmol/L	< 1.33	1.33 – 1.68	> 1.68

Cholesterol Levels

Category	Total Cholesterol	LDL Cholesterol	HDL Cholesterol
🔴 Dangerous	240 and higher	160 and higher	Under 40 (male) / Under 50 (female)
🟠 At-Risk	200 – 239	100 – 159	40 – 59 (male) / 50 – 59 (female)
🟢 Heart-Healthy	Under 200	Under 100	60 and higher

COUNSELING AND FOLLOW-UP

Healthcare providers and pharmacists should provide:

·        Lifestyle counseling:

• Healthy diet
• Exercise
• Smoking cessation

·        Referral to physician when needed

·        Education on cardiovascular health

CONCLUSION

Lung function screening and cholesterol testing are important preventive healthcare services.

These tests help:

• Detect diseases early
• Monitor treatment response
• Reduce complications
• Improve patient outcomes

Community pharmacy-based screening services improve accessibility to preventive healthcare and contribute significantly to public health.

Patient Counselling

PATIENT COUNSELING

DEFINITION

Patient counseling is defined as:

“Providing information to the patient or the patient’s caregiver regarding the disease, medication, diet, and lifestyle modifications in simple layman language to achieve desirable therapeutic outcomes.”

The information may be provided verbally and supplemented with written information leaflets.

OUTCOMES OF EFFECTIVE PATIENT COUNSELING

• Helps the patient understand the importance of prescribed medications in disease management.
• Improves medication adherence/compliance.
• Helps in achieving desired therapeutic goals.
• Reduces adverse effects and unnecessary healthcare costs.
• Improves the quality of life of the patient.
• Improves professional rapport between the pharmacist and patient, leading to better patient trust and patronage.

Effective patient counseling is not merely providing information. Proper timing, organization, and communication of information are important to improve patient understanding and motivation to follow instructions.

In busy community pharmacy settings, pharmacists may not always counsel every patient due to workload and time constraints. Therefore, priority should be given to patients who especially need counseling.

STAGES IN PATIENT COUNSELING

1. Introduction
2. Content
3. Process
4. Conclusion

1) INTRODUCTION

• Review the patient record before counseling.
• Introduce yourself and identify the patient appropriately.
• Explain the purpose of the counseling session.
• Obtain relevant drug-related information such as:
• Drug allergies
• Current medications
• Past medical history
• Warn the patient about taking:
• OTC medications
• Herbal or botanical products
• Alcohol as these may interact with prescribed medications.
• Assess the patient’s understanding of the disease and therapy.
• Identify actual or potential problems important to the patient.

2) COUNSELING CONTENT ITEMS

• Discuss the name and indication of the medication.
• Explain the dosage regimen and duration of therapy.
• Help the patient incorporate the medication schedule into daily routine.
• Explain how long the medicine will take to show its effect.
• Discuss storage conditions and refill information.
• Emphasize the importance of completing the full course of therapy.
• Explain possible side effects.
• Discuss prevention and management of side effects.
• Explain necessary precautions.
• Discuss important:
• Drug–drug interactions
• Drug–food interactions
• Drug–disease interactions
• Explain what to do if a dose is missed.
• Explore possible medication-related problems faced by the patient.

3) COUNSELING PROCESS ITEMS

• Use language understandable to the patient.
• Use appropriate counseling aids whenever needed.
• Present information logically and systematically.
• Ask open-ended questions.
• Use both verbal and non-verbal communication effectively.

4) COUNSELING CONCLUSION

• Verify patient understanding through feedback or teach-back method.
• Encourage the patient to ask questions.
• Summarize important points discussed during counseling.

BARRIERS TO PATIENT COUNSELING

The barriers preventing effective patient counseling in India are classified into:

1. Patient-based barriers
2. System-based barriers
3. Provider-based barriers

1) PATIENT-BASED BARRIERS

Patient counseling is effective only when patients are interested in receiving information. If patients are in a hurry, counseling becomes difficult.

Common patient-based barriers include:

• Lack of interest
• Language differences
• Gender differences
• Illiteracy or low educational status

2) SYSTEM-BASED BARRIERS

• Lack of reimbursement for counseling services
• Non-legalization of patient counseling
• Inadequate counseling space
• Lack of trained staff
• Busy pharmacy hours and workload

3) PROVIDER-BASED BARRIERS

The provider refers to the pharmacist.

In India, many community pharmacies are operated by pharmacists with limited training in patient counseling.

Common provider-based barriers include:

• Lack of interest
• Lack of time
• Lack of knowledge
• Lack of confidence
• Lack of training

STRATEGIES TO OVERCOME COUNSELING BARRIERS

The following strategies can improve patient counseling:

• Use of multimedia educational materials
• Use of pictograms
• Providing oral and written instructions
• Use of compliance aids
• Follow-up schedules
• Audio-visual educational tools
• Tailoring prescription instructions according to patient needs

Additional important strategies include:

• Legalization of patient counseling services
• Introduction of counseling fees/reimbursement
• Continuous professional development (CPD) programs for pharmacists

Inventory control methods in Community Pharmacy

 

📘 INVENTORY CONTROL IN COMMUNITY PHARMACY

🔷 INTRODUCTION

Inventory control is one of the most important managerial and professional responsibilities of a community pharmacist. It involves the systematic planning, procurement, storage, and distribution of medicines to ensure their continuous availability in the right quantity, right quality, at the right time, and at the right cost.

Although procurement and dispensing appear simple, poor inventory control can lead to serious problems such as stock-outs, over-stocking, expiry losses, blocked capital, and loss of patient confidence. Efficient inventory control improves cash flow, minimizes wastage, strengthens supplier relationships, supports Good Pharmacy Practice, and ensures uninterrupted patient care.

🔷 DEFINITIONS

Inventory control is the supervision of procurement, storage, and accessibility of medicines in order to ensure an adequate supply at the right time and at minimum cost.

It also refers to maintaining a systematic record of medicines procured in the right quantity, right quality, from the right supplier, at the right time and right price.

🔷 OBJECTIVES OF INVENTORY CONTROL

• Ensure uninterrupted availability of medicines
• Prevent stock-out and over-stock situations
• Reduce expiry, damage, and pilferage losses
• Optimize utilization of financial resources
• Improve cash flow and profitability
• Maintain quality standards
• Support Good Pharmacy Practice
• Improve patient satisfaction and trust

🔷 FACTORS INFLUENCING INVENTORY CONTROL

• Prescription and disease patterns
• Seasonal variations
• Lead time
• Supplier reliability
• Discounts and credit policies
• Storage facilities
• Financial capacity
• Legal and regulatory requirements

🔷 PROCUREMENT PROCESS IN COMMUNITY PHARMACY

Selection of medicines → Estimation of quantity → Budget assessment → Supplier selection → Placing orders → Receiving and checking → Stock entry → Storage → Issue → Payment → Review and re-ordering

📗 INVENTORY CONTROL METHODS

✅ 1. ABC ANALYSIS (Always Better Control)

ABC analysis is based on the annual consumption value of medicines.

Category	% of Items	% of Budget	Control
A	10–15%	70–75%	Very strict
B	20–25%	15–20%	Moderate
C	60–70%	5–10%	Simple

A items: High-cost medicines (anticancer drugs, insulin analogues, biologicals)
B items: Moderate-cost medicines
C items: Low-cost, high-volume medicines (paracetamol, ORS, vitamins)

📌 Principle: Small number of items consume major portion of budget.

✅ 2. VED ANALYSIS (Vital – Essential – Desirable)

Classification based on critical importance to patient care, irrespective of cost.

Vital: Life-saving medicines (adrenaline, atropine, insulin, anti-snake venom)
Essential: Necessary for effective treatment (antibiotics, antihypertensives, PPIs)
Desirable: Supportive or supplementary medicines (multivitamins, nutraceuticals)

📌 Principle: Importance to life is more important than cost.

✅ 3. EOQ METHOD (Economic Order Quantity)

EOQ is the optimum quantity of a medicine to be ordered at one time which minimizes the total cost of ordering and carrying inventory.

EOQ Formula:

\textbf{EOQ = } \sqrt{\frac{2 \times P \times Q}{C}}

Where:
P = Procuring (ordering) cost per order
Q = Annual demand in units
C = Carrying (holding) cost per unit per year

Procuring cost includes:

Communication, documentation, order processing, receiving, checking, marking, and stocking costs.

Carrying cost includes:

Storage, insurance, refrigeration, interest on capital, expiry risk, deterioration, damage, and obsolescence.

📌 EOQ reduces unnecessary capital blockage and expiry losses.

✅ 4. PERPETUAL INVENTORY CONTROL METHOD

A continuous inventory system in which every receipt and issue is immediately recorded, providing a running balance of stock.

Features:

• Continuous stock records
• Periodic physical verification
• Early detection of discrepancies
• Real-time stock availability
• Computerized alerts for reorder and expiry

Advantages:

• Accurate stock position
• Timely re-ordering
• Reduced pilferage and losses
• Essential for modern community pharmacies

✅ 5. PHYSICAL INVENTORY

Physical inventory refers to actual physical counting of stock at regular intervals.

Objectives:

• Identify non-moving and slow-moving items
• Detect near-expiry and expired medicines
• Detect pilferage and breakage
• Verify record accuracy

📌 It helps in supplier replacement, discount planning, and procurement correction.

✅ 6. LEAD TIME

Lead time is the total time between placing an order and receiving medicines.

Lead Time = Ordering time + Delivery time + Receiving time

Ordering time: Time taken to analyze demand and place order
Delivery time: Time taken by supplier to process and dispatch
Receiving time: Time taken to transport, verify, and store medicines

📌 Longer lead time requires higher safety stock and careful reorder planning.

✅ 7. OPEN-TO-BUY BUDGET SYSTEM

A financial inventory control system based on annual pharmacy budget allocation.

Open-to-buy = Total budget – existing stock – pending orders

Advantages:

• Prevents unnecessary purchasing
• Controls over-investment
• Supports planned procurement
• Reduces expiry and dead stock

✅ 8. BIN CARD SYSTEM

A simple stock recording system where a separate card is maintained for each medicine.

Bin card shows:

• Medicine name and strength
• Receipts
• Issues
• Balance stock
• Batch and expiry

Advantages:

• Easy visual stock monitoring
• Supports FIFO system
• Useful for audits and inspections

✅ 9. SAFETY STOCK METHOD

Safety stock is the extra reserve stock maintained to prevent stock-outs.

Uses:

• Covers sudden increase in demand
• Protects against supplier delays
• Ensures uninterrupted patient care

Factors affecting safety stock:

• Demand variability
• Lead time
• Supplier reliability
• Nature of medicine

Formula (concept):

\textbf{Safety Stock = Z × σ × √L}

Z = Service level factor
σ = Standard deviation of demand
L = Lead time

Benefits:

• Prevents stock-outs
• Improves patient satisfaction
• Reduces emergency purchases

Limitations:

• Increased holding cost
• Risk of expiry and obsolescence

📌 Objective: Balance service reliability with minimum holding cost.

📕 IMPORTANCE OF INVENTORY CONTROL IN COMMUNITY PHARMACY

• Ensures continuous medicine availability
• Minimizes expiry and wastage
• Controls financial investment
• Improves professional credibility
• Supports Good Pharmacy Practice
• Enhances patient satisfaction
• Improves pharmacy profitability

📙 CONCLUSION

Inventory control is both a professional responsibility and a managerial function. Effective inventory systems enable community pharmacists to maintain uninterrupted patient care, minimize losses, optimize investment, and ensure regulatory compliance. Scientific methods such as ABC, VED, EOQ, perpetual inventory, and safety stock form the foundation of modern pharmacy inventory management.

📌 QUICK EXAM REVISION BOX

ABC → Cost
VED → Criticality
EOQ → How much to order
Perpetual → Continuous records
Physical → Actual stock checking
Lead time → Ordering delay
Open-to-buy → Budget control
Bin card → Item-wise stock record
Safety stock → Emergency buffer

 

 

Patient Medication Adherence

 

MEDICATION ADHERENCE

Definition

The World Health Organization defines medication adherence as:
“The extent to which a person’s behavior in taking medication corresponds with the agreed recommendations from a healthcare provider.”

Key Concepts

Adherence vs Compliance

• Compliance: Passive following of doctor’s orders
• Adherence: Active, agreed participation between patient and healthcare provider

Concordance

• A modern concept emphasizing shared decision-making between patient and prescriber

Types of Medication Non-Adherence

1. Primary Non-Adherence

• Patient does not fill or obtain the prescription

2. Secondary Non-Adherence

Occurs when the patient gets the medication but does not use it properly.

a) Intentional Non-Adherence

• Patient knowingly deviates from instructions
• Examples:
• Taking fewer/more doses
• Stopping medication when symptoms improve
• Using medication with contraindicated foods/drugs
• Improper use of devices (e.g., inhalers)

b) Unintentional Non-Adherence

• Patient unintentionally fails to follow regimen
• Causes:
• Forgetfulness
• Misunderstanding instructions
• Cognitive impairment

Classification Based on Extent of Adherence

Category	Definition
Adherent	Takes > 80% of prescribed doses
Partially adherent	Takes 70–80% of doses
Non-adherent	Takes < 70% of doses

Intelligent Non-Adherence

• Term coined by Weintraub
• Patient stops medication due to adverse effects (e.g., nausea, vomiting, gastric irritation)
• If condition improves after stopping → termed intelligent non-adherence

Clinical Situations Requiring High Adherence

• Metabolic disorders
• e.g., Insulin (Diabetes), Thyroxine deficiency
• Chronic diseases
• Hypertension
• Diabetes mellitus
• Required to prevent complications and disease progression

Important Concept

👉 “Drugs do not work if patients do not take them.” — Everett C. Koop

Quick Revision Tips (Exam-Oriented)

• 2 Types: Primary & Secondary
• Secondary → 2 Types: Intentional + Unintentional
• Cut-offs:

o   80% = Adherent

• 70–80% = Partial
• <70% = Non-adherence

3.     Diseases requiring constant plasma drug levels

• e.g., Epilepsy (to prevent breakthrough seizures)

4.     Chronic infectious diseases of public health importance

• Tuberculosis
• Hepatitis
• HIV infection

Required Level of Adherence

·        > 90% adherence is generally required for optimal therapeutic outcomes

·        In HIV infection:

• < 90–95% adherence →
• Increased viral replication
• Poor clinical outcomes
• Development of drug-resistant strains

·        In hypertension:

• High adherence (>90%) →
• Reduced ischemic heart disease
• Reduced stroke mortality

Consequences of Medication Non-Adherence

Impact on Patient & Healthcare System

• Poor health outcomes
• Increased hospital visits and healthcare utilization
• Higher healthcare costs

Disease-Specific Impact

·        Chronic diseases affected:

• Hypertension
• Diabetes mellitus
• Ischemic heart disease
• Asthma

·        Leads to:

• Treatment failure
• Disease recurrence
• Complications

Example: Tuberculosis

• Caused by Mycobacterium tuberculosis
• Non-adherence leads to:
• Delayed sputum conversion
• 5–6× higher relapse rates
• Development of drug-resistant TB strains

Quality of Life

• Non-adherence → ↓ Quality of life
• Good adherence → ↑ Improved quality of life

Factors Affecting Medication Adherence

(According to World Health Organization)

1. Social & Economic Factors

• Low health literacy
• Lack of social support
• Unstable living conditions
• Busy schedules
• Poor access to healthcare/pharmacy
• High cost of medications
• Cultural beliefs and misconceptions

2. Healthcare System Factors

• Poor patient–provider relationship
• Inadequate communication
• Lack of patient education
• No proper follow-up
• Poor continuity of care

3. Condition-Related Factors

• Symptom improvement → patient stops drugs
• Depression → lack of interest
• Psychiatric illness → forgetfulness

4. Therapy-Related Factors

• Complex regimens
• Special techniques (inhalers, injections)
• Long duration
• Frequent changes in therapy
• No immediate benefit
• Side effects
• Lifestyle restrictions

5. Patient-Related Factors

• Sensory impairment (vision/hearing)
• Cognitive impairment
• Poor mobility
• Swallowing difficulty
• Lack of knowledge
• Fear of adverse effects
• Stress, anxiety, anger
• Low motivation

Formula for Medication Adherence

%Adherence = Total no. of Actual doses the patient has consumed since last appointment  ×100

 /Total number of calculated doses to be consumed  

Role of Pharmacist in Improving Adherence

Key Responsibilities

• Identify barriers to adherence
• Provide patient counseling
• Educate about disease and medication benefits
• Address fear of adverse effects
• Improve patient confidence and motivation
• Help integrate medication into daily routine

Important Insight

• Many patients lack belief in medication benefits
• Doctors often prescribe without detailed counseling
• Pharmacists bridge this gap through effective communication

Key Points (Exam Revision)

• >90% adherence needed for best outcomes
• Non-adherence → treatment failure + resistance
• TB & HIV → high public health impact
• 5 major factors affect adherence (WHO classification)
• Pharmacist = key role in counseling & behavior change