Need an Exact Dose for Your Child?
Enter your child's weight for an instant calculation
Open Dose Calculator →Cephalexin
Cephalexin
💊 Used for: Skin infections, pharyngitis, otitis media, respiratory infections, UTIs
Formulation
Suspension
125mg, 250mg per 5ml
Dose Range
25–100 mg/kg
Max Daily
100 mg/kg
Frequency
Every 6-8 hours
Max Single
500 mg
Route: Oral
Dose by Child Weight
Based on formulation: 125mg, 250mg per 5ml
| Child's Weight | Dose (mg) | Dose (ml) | Max Daily Dose (mg) |
|---|---|---|---|
| 5 kg | 125–500 mg | 5.0–20.0 ml | ≤ 500 mg |
| 6 kg | 150–600 mg | 6.0–24.0 ml | ≤ 600 mg |
| 7 kg | 175–700 mg | 7.0–28.0 ml | ≤ 700 mg |
| 8 kg | 200–800 mg | 8.0–32.0 ml | ≤ 800 mg |
| 9 kg | 225–900 mg | 9.0–36.0 ml | ≤ 900 mg |
| 10 kg | 250–1000 mg | 10.0–40.0 ml | ≤ 1000 mg |
| 12 kg | 300–1200 mg | 12.0–48.0 ml | ≤ 1200 mg |
| 15 kg | 375–1500 mg | 15.0–60.0 ml | ≤ 1500 mg |
| 18 kg | 450–1800 mg | 18.0–72.0 ml | ≤ 1800 mg |
| 20 kg | 500–2000 mg | 20.0–80.0 ml | ≤ 2000 mg |
| 25 kg | 625–2500 mg | 25.0–100.0 ml | ≤ 2500 mg |
| 30 kg | 750–3000 mg | 30.0–120.0 ml | ≤ 3000 mg |
* Always verify with your doctor. doses are approximate and may vary based on condition and formulation.
⚠️ Important Warnings
- •Monitor for allergic reactions
- •May cause false positive Coombs test
Possible Side Effects
- •Diarrhea
- •Nausea
- •Abdominal pain
- •Rash
- •Headache
💡 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.