Chlorpheniramine

One of the oldest antihistamines. Known for its relative safety but causes significant drowsiness.

Dosage by Body Weight

Pediatric dose is typically 0.35 mg/kg/day divided every 4-6 hours.

Body Weight
10-15 kg
Dose
1 mg to 2 mg
Frequency
Every 4-6 hours
Tracking Notes
Do not exceed 6 mg total per day for young children.
Body Weight
16-30 kg
Dose
2 mg
Frequency
Every 4-6 hours
Tracking Notes
Max 12 mg per day.

Weight-based dosage tracking table for Chlorpheniramine, including body weight, dose, frequency, and tracking notes.
Body Weight	Dose	Frequency	Tracking Notes
10-15 kg	1 mg to 2 mg	Every 4-6 hours	Do not exceed 6 mg total per day for young children.
16-30 kg	2 mg	Every 4-6 hours	Max 12 mg per day.

Formulation

TabletSyrup

Purpose

First-generation antihistamine used for allergy symptoms and common cold relief.

Generic Name

Chlorpheniramine Maleate

Branded Drug Names

Chlorpheniramine is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

Scheduled Drug

No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.

Alternatives

Diphenhydramine Cetirizine

Safety Advice

Alcohol

CAUTION

Chlorpheniramine: Alcohol may increase dizziness, stomach upset, dehydration, or other side effects. Avoid or limit alcohol and follow medical advice.

Pregnancy

SAFE IF PRESCRIBED

Chlorpheniramine: Use during pregnancy only if prescribed after a healthcare provider weighs the benefits and risks.

Breast Feeding

SAFE IF PRESCRIBED

Chlorpheniramine: Use while breastfeeding only with healthcare provider guidance, especially for repeated or long-term treatment.

Driving

CAUTION

Chlorpheniramine: This medicine may cause dizziness, drowsiness, weakness, or blurred vision in some people. Avoid driving if affected.

Liver

CAUTION

Chlorpheniramine: Use with caution in liver disease and consult your healthcare provider if you have abnormal liver tests or jaundice.

Kidney

CAUTION

Chlorpheniramine: Use with caution in kidney disease because dose adjustment or monitoring may be needed for some patients.