Amoxicillin dosage forms are amoxicillin capsules, amoxicillin tablets, amoxicillin sodium for injection and so on, so there are differences in dosage, it is recommended to follow the doctor’s instructions for medication. 1. Amoxicillin capsules: oral medication. If the patient is mild to moderate ear, nose and throat infection, skin and soft tissue infection, genitourinary tract infection, and is an adult, weight ≥ 40kg children, usually 500mg need to be used every 12 hours or 250mg need to be used every 8 hours, serious infection 500mg every 8 hours. For children <40 kg, 25 mg/kg/day every 12 hours. If 20mg/kg/day, 1 every 8 hours. 45mg/kg/day every 12 hours in severely infected individuals. If 40mg/kg/day, then every 8 hours. 2. Amoxicillin tablets: oral medication. Adults 1 time 0.5g and take 2 tablets, every 6 ~ 8 hours, 1 day dose does not exceed 4g. pediatric 1 day dose according to the body weight of 20 ~ 40mg/kg, every 8 hours. infants under 3 months 1 day dose according to the body weight of 30mg/kg, every 12 hours. 3. Amoxicillin sodium for injection: Intramuscular injection or diluted intravenous drip administration. Adults 1 time 0.5 ~ 1g, every 6 ~ 8 hours, while the pediatric 1 day dose according to the body weight of 50 ~ 100mg / kg, divided into 3 ~ 4 times. Adverse reactions include gastrointestinal disorders, urticaria, rash and allergic reactions. It is contraindicated in people with a history of allergy to penicillin or allergic constitution. Patients are advised to apply amoxicillin as prescribed by the doctor and not to use the drug on their own.