Chlortab Tablet 4mg

About Chlortab Tablet 4mg

Chlortab Tablet 4mg Uses

• Seasonal and year-round allergic rhinitis
• Common cold symptoms like sneezing and runny nose
• Hives and allergic skin itching
• Allergic reactions to insect bites or mild allergens

Chlortab Tablet 4mg Benefits

• Fast-acting relief from sneezing and nasal congestion
• Affordable, widely available antihistamine option
• Effective for both allergy and cold-related symptoms
• Can be combined with decongestants under medical advice

What Experts Say

Chlorpheniramine is a first-generation antihistamine that blocks histamine H1 receptors, reducing sneezing, itching, watery eyes, and runny nose caused by allergies or the common cold. It has been used for decades as a reliable, low-cost option across Pakistan and beyond.

Unlike newer antihistamines, it crosses into the brain more easily, which is why it causes more noticeable drowsiness and is often chosen when sedation is not a concern, such as at bedtime or alongside cold and flu symptoms that disturb sleep quality.

It works quickly, usually within 30 minutes, but its effects wear off sooner than newer antihistamines, so it is generally taken multiple times a day rather than once daily to maintain steady symptom control. Patients who need to stay alert during the day, such as drivers or machine operators, should be cautious with daytime dosing, and combining it with alcohol or other sedating medicines can make drowsiness noticeably worse.

Drug Class

• First-Generation Antihistamine

Chlortab Tablet 4mg formula

• Chlorpheniramine Maleate

Available forms

• Tablet

How to use Chlortab Tablet 4mg?

• Take one tablet every 4 to 6 hours as needed
• Do not exceed 6 tablets in 24 hours
• Swallow whole with a glass of water, with or without food
• Avoid driving or operating machinery until you know how it affects you

Drug Interactions

• Alcohol: Significantly increases sedation and impairs alertness.
• Other CNS Depressants: Sedatives or sleeping pills cause additive drowsiness when combined.
• MAO Inhibitors: May prolong and intensify antihistamine effects; avoid concurrent use.
• Anticholinergic Drugs: Combined use increases dry mouth, constipation, and urinary retention risk.

Risks and warnings

• Drowsiness: Causes significant sedation in most users; avoid alcohol and driving.
• Elderly Patients: Higher risk of confusion, dizziness, and falls.
• Glaucoma and Urinary Retention: Avoid in patients with narrow-angle glaucoma or urinary retention.
• Children: Use only age-appropriate doses under medical guidance.
• Pregnancy and Breastfeeding: Use only if advised by your doctor.

Chlortab Tablet 4mg Side Effects

• Drowsiness
• Dry mouth
• Blurred vision
• Constipation
• Dizziness
• Urinary retention
• Thickened bronchial secretions

Storage Conditions

• Store below 30 degrees Celsius in a cool, dry place
• Protect from moisture and direct sunlight
• Keep in the original blister pack until use
• Keep out of reach of children