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Open Dose Calculator →Cetirizine
Cetirizine
💊 Used for: Allergic rhinitis, urticaria
Formulation
Syrup
5mg/5ml
Dose Range
0.25–0.25 mg/kg
Max Daily
0.25 mg/kg
Frequency
Once daily
Max Single
10 mg
⚠️ Age Restriction: Not recommended for children under 6 months (0 years) unless specifically prescribed by a doctor.
Route: Oral
Dose by Child Weight
Based on formulation: 5mg/5ml
| Child's Weight | Dose (mg) | Dose (ml) | Max Daily Dose (mg) |
|---|---|---|---|
| 5 kg | 1–1 mg | 1.3–1.3 ml | ≤ 1 mg |
| 6 kg | 2–2 mg | 1.5–1.5 ml | ≤ 2 mg |
| 7 kg | 2–2 mg | 1.8–1.8 ml | ≤ 2 mg |
| 8 kg | 2–2 mg | 2.0–2.0 ml | ≤ 2 mg |
| 9 kg | 2–2 mg | 2.3–2.3 ml | ≤ 2 mg |
| 10 kg | 3–3 mg | 2.5–2.5 ml | ≤ 3 mg |
| 12 kg | 3–3 mg | 3.0–3.0 ml | ≤ 3 mg |
| 15 kg | 4–4 mg | 3.8–3.8 ml | ≤ 4 mg |
| 18 kg | 5–5 mg | 4.5–4.5 ml | ≤ 5 mg |
| 20 kg | 5–5 mg | 5.0–5.0 ml | ≤ 5 mg |
| 25 kg | 6–6 mg | 6.3–6.3 ml | ≤ 6 mg |
| 30 kg | 8–8 mg | 7.5–7.5 ml | ≤ 8 mg |
* Always verify with your doctor. doses are approximate and may vary based on condition and formulation.
⚠️ Important Warnings
- •May cause drowsiness
- •Avoid in renal impairment
- •Use with caution in children
Possible Side Effects
- •Mild drowsiness (less than older antihistamines)
- •Dry mouth
- •Headache
- •Fatigue
- •Rare: urinary retention
- •Paradoxical excitement in children
💡 Use the DoseCare Calculator for interactive dose calculations tailored to your child's exact weight and formulation.
DoseCare is a decision support tool only. Always verify doses with a qualified healthcare provider.