Chlorphenamine (chlorpheniramine)

🧮 Dose calculator

Allergic conditions (hay fever, urticaria, angioedema, insect bites, chickenpox itch) · Regimen source: UK SmPC Piriton · 4.2UK SmPC Piriton · 4.1

• • Every 4–6 h (1–2 years: twice daily). Daily max: 1–2 y 2 mg; 2–6 y 6 mg; 6–12 y 12 mg; ≥12 y 24 mg. Not continuously >2 weeks without advice. Not recommended under 1 year. UK SmPC Piriton · 4.2

Enter age (weight is optional for this regimen).

👥 Special populations

• 🤰 PregnancyUse with caution

  Label states no clear risk or has limited data; use only if needed, under medical advice. UK SmPC Piriton · 4.6

  “There are no adequate data from the use of chlorphenamine in pregnant women.”

• 🤱 BreastfeedingUse with caution

  Label: use with caution while breastfeeding; see the label text. UK SmPC Piriton · 4.6

  “Chlorphenamine maleate and other antihistamines may inhibit lactation and may be secreted in breast milk.”

• 👶 ChildrenUse with caution

  The label has conditions, age limits or notes for children; the label sentence is quoted below. UK SmPC Piriton · 4.2

  “Children aged 6 - 12 years : 5ml (2mg) every 4 to 6 hourly.”

• 👴 Older adultsUse with caution

  Label: use with caution in older adults, usually starting at the low end of the dose range. UK SmPC Piriton · 4.2

  “Elderly : The elderly are more likely to experience neurological anticholinergic effects.”

• ⚥ Females & males of reproductive potentialNo data

  The source for this drug has no section for this group.