Amoxicillin + Clavulanic Acid Dose Calculator Weight (kg) Choose Amoxicillin + Clavulanic Acid Strength Amoxicillin 125 mg/5 mL + Clavulanic Acid 31.25 mg/5 mL Amoxicillin 250 mg/5 mL + Clavulanic Acid 62.5 mg/5 mL Dose in millilitres Dose in milligrams For ages 1 month to 18 years only. Calculator written by Dr Jeremy Steinberg, GP. Contact for suggestions