Chlor-Trimeton
Chlor-Trimeton is a first-generation antihistamine containing chlorpheniramine maleate. It works by competing with histamine for H1-receptor sites on effector cells in the gastrointestinal tract, blood vessels, and respiratory tract. It is effective for allergy relief but is known to cause significant drowsiness.
Dosage by Body Weight
Adults and children 12 years of age and over: 4 mg every 4 to 6 hours, not to exceed 24 mg in 24 hours. Children 6 to under 12 years: 2 mg every 4 to 6 hours, not to exceed 12 mg in 24 hours. Children under 6 years: Consult a physician.
- Body Weight
- Below 5 kg
- Dose
- Not recommended
- Frequency
- Do not use
- Tracking Notes
- Antihistamines are dangerous for newborns and young infants unless prescribed and monitored directly by a specialist.
- Body Weight
- 5-7 kg
- Dose
- Not routine
- Frequency
- Use only if prescribed
- Tracking Notes
- Consult a pediatrician. Typically avoided in children under 2 years of age due to risk of respiratory depression and oversedation.
- Body Weight
- 8-10 kg
- Dose
- Consult physician
- Frequency
- As directed by physician
- Tracking Notes
- Safety and efficacy have not been established for this weight range/age without professional guidance.
- Body Weight
- 11-15 kg
- Dose
- 1 mg (approx. 2.5 mL of 2 mg/5mL syrup)
- Frequency
- Every 4 to 6 hours
- Tracking Notes
- Do not exceed 4 mg in 24 hours. Use a calibrated measuring device. Consult a pediatrician before administering.
- Body Weight
- 16-20 kg
- Dose
- 1 mg to 2 mg (approx. 2.5 mL to 5 mL of 2 mg/5mL syrup)
- Frequency
- Every 4 to 6 hours
- Tracking Notes
- Do not exceed 6 mg in 24 hours. Always consult a pediatrician prior to administering OTC antihistamines to children under 6.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | Not recommended | Do not use | Antihistamines are dangerous for newborns and young infants unless prescribed and monitored directly by a specialist. |
| 5-7 kg | Not routine | Use only if prescribed | Consult a pediatrician. Typically avoided in children under 2 years of age due to risk of respiratory depression and oversedation. |
| 8-10 kg | Consult physician | As directed by physician | Safety and efficacy have not been established for this weight range/age without professional guidance. |
| 11-15 kg | 1 mg (approx. 2.5 mL of 2 mg/5mL syrup) | Every 4 to 6 hours | Do not exceed 4 mg in 24 hours. Use a calibrated measuring device. Consult a pediatrician before administering. |
| 16-20 kg | 1 mg to 2 mg (approx. 2.5 mL to 5 mL of 2 mg/5mL syrup) | Every 4 to 6 hours | Do not exceed 6 mg in 24 hours. Always consult a pediatrician prior to administering OTC antihistamines to children under 6. |
Formulation
Purpose
Relief of symptoms associated with allergic rhinitis (hay fever), upper respiratory allergies, and the common cold, such as sneezing, runny nose, itchy, watery eyes, and itchy throat.
Generic Name
Chlorpheniramine maleateScheduled Drug
No. This medicine is generally not treated as a scheduled/prescription-only drug in common consumer references, but local rules may vary.