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Open Dose Calculator →Metronidazole
Metronidazole
💊 Used for: Anaerobic infections, giardiasis, amebiasis
Formulation
Suspension
200mg/5ml
Dose Range
7.5–10 mg/kg
Max Daily
40 mg/kg
Frequency
Every 8 hours
Max Single
500 mg
Route: Oral
Dose by Child Weight
Based on formulation: 200mg/5ml
| Child's Weight | Dose (mg) | Dose (ml) | Max Daily Dose (mg) |
|---|---|---|---|
| 5 kg | 38–50 mg | 0.9–1.3 ml | ≤ 200 mg |
| 6 kg | 45–60 mg | 1.1–1.5 ml | ≤ 240 mg |
| 7 kg | 53–70 mg | 1.3–1.8 ml | ≤ 280 mg |
| 8 kg | 60–80 mg | 1.5–2.0 ml | ≤ 320 mg |
| 9 kg | 68–90 mg | 1.7–2.3 ml | ≤ 360 mg |
| 10 kg | 75–100 mg | 1.9–2.5 ml | ≤ 400 mg |
| 12 kg | 90–120 mg | 2.3–3.0 ml | ≤ 480 mg |
| 15 kg | 113–150 mg | 2.8–3.8 ml | ≤ 600 mg |
| 18 kg | 135–180 mg | 3.4–4.5 ml | ≤ 720 mg |
| 20 kg | 150–200 mg | 3.8–5.0 ml | ≤ 800 mg |
| 25 kg | 188–250 mg | 4.7–6.3 ml | ≤ 1000 mg |
| 30 kg | 225–300 mg | 5.6–7.5 ml | ≤ 1200 mg |
* Always verify with your doctor. doses are approximate and may vary based on condition and formulation.
⚠️ Important Warnings
- •Complete full course
- •Avoid alcohol during treatment
- •May cause metallic taste
Possible Side Effects
- •Nausea, metallic taste
- •GI upset, diarrhea
- •Headache
- •Peripheral neuropathy (with prolonged use)
- •Seizures (high doses)
- •Disulfiram-like reaction with alcohol
💡 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.