Megamox Dose Calculator
Weight-based pediatric dosing for Amoxicillin + Clavulanate. Also known as Megamox. Built for busy OPDs and emergency settings — free, offline after first load.
Typical pediatric dosing
General (amoxicillin component): 20–40 mg/kg TDS — max 500 mg/dose — 5–7 days — Dose on amoxicillin component. Give with food. Diarrhoea common.
Syrup strengths: 156.25 mg/5mL, 228.5 mg/5mL, 312.5 mg/5mL, 457 mg/5mL
For a typical 5-year-old (~18 kg), one dose is about 450 mg — use the calculator for exact syrup mL by strength.
Complete Amoxicillin + Clavulanate details
- Age range
- 1 month – adult
- Min age
- 1 months
- Pregnancy
- Category B — Verify against obstetric guidance and product insert.
- Clinical notes
- Verify brand ratio. Dose on amoxicillin component.
- Also known as
- augmentin, clavam, megamox, clavamox, amox clav, co-amoxiclav, amoxicillin clavulanic acid
Indications & regimens
- General (amoxicillin component): 20–40 mg/kg TDS — max 500 mg/dose — 5–7 days — Dose on amoxicillin component. Give with food. Diarrhoea common.
Formulations
- Oral syrup / suspension: 156.25 mg/5mL (125+31.25), 228.5 mg/5mL (200+28.5 style — verify brand), 312.5 mg/5mL (250+62.5), 457 mg/5mL (400+57 paediatric high-strength)
- Tablets: 375 mg (250+125), 625 mg (500+125), 1000 mg (875+125)
- IV / injectable: 1200 mg/vial; Diluent: NS; Infusion: 30 min; 1000+200
Adult dosing
625 mg; TDS or BD (product-dependent) with food; max single 1000 mg; max daily 3000 mg
Contraindications & cautions
See product insert and local protocol for contraindications and cautions.
Medical trust & authorship (EEAT)
Who owns and developed PediaRx? Dr. Shounak Pal, MBBS — Founder, clinical author, and sole developer of PediaRx. The clinical database was authored for the developer’s own practice and peer-tested with clinical colleagues; it is not a third-party “review-only” widget.
Qualifications: Practising physician (MBBS). Profile: https://www.shounakpal.com.
References: BNFc, IAP Drug Formulary, WHO guidance, NNF neonatal schedules (where applicable), and product inserts. Primary jurisdiction: India (IN). Useful globally — always verify against local formularies.
Last drug-record review: 2026-07 (formulary DB v4.0). Live updates sync from db.pediarx.com; corrections are issued via formulary version bumps.
Privacy: No patient identifiers collected. Weight/age stay on-device. Intended for clinicians, not patient self-medication.
How to report an error: [email protected] · Disclaimer · Privacy
Common questions
What is the pediatric dose of Amoxicillin + Clavulanate?
General (amoxicillin component): 20–40 mg/kg TDS — max 500 mg/dose — 5–7 days — Dose on amoxicillin component. Give with food. Diarrhoea common. Always verify against current national guidelines and the product label.
How do I calculate Amoxicillin + Clavulanate syrup dose for a child?
Enter the child's age and weight in the calculator on this page (right column on desktop; above the article on mobile). PediaRx shows mg per dose, syrup mL by strength, tablet fractions, and IV volume when available — using the live formulary from db.pediarx.com. Brand names include Megamox.
Who built and maintains the Amoxicillin + Clavulanate dosing data in PediaRx?
PediaRx was built and clinically authored by Dr. Shounak Pal, MBBS — a practising physician — for personal clinical use and peer-tested with colleagues. It is not a third-party review of someone else's calculator.
What references support these doses?
Doses are curated from BNFc, IAP Drug Formulary, WHO guidance, and NNF schedules where applicable. India (IN) is the primary formulary region; always confirm against your local protocol and product insert.
Does PediaRx collect patient information?
No. Age, weight, and sex stay on your device. Calculations run locally. Anonymous analytics (page views) may be collected; no clinical inputs are transmitted.
Is PediaRx for clinicians or patients?
PediaRx is a clinical reference for qualified healthcare professionals (GDMOs, paediatricians, medical officers, family physicians). It is not intended as a consumer self-medication tool.
Is PediaRx free?
Yes. Free clinical reference — no ads, no subscriptions, no accounts. Works offline after first load.
What is the pregnancy category for Amoxicillin + Clavulanate?
Category B. See product insert and obstetric guidance.
Clinical disclaimer: Reference tool for qualified professionals only. Verify every dose against IAP/NNF/BNFc/product insert before prescribing. Clinical aid only. Verify every dose with IAP/NNF/BNFc/product insert/local protocol before prescribing.
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