Question: how much penicillin to give a person?
Answer: The usual dose is 20 to 30 mg per kilogram (kg) (9.1 to 13.6 mg per pound) of body weight two times a day. For oral dosage form (tablets): Adults, teenagers, and children 10 years of age and older—500 mg to 1 gram two times a day. Children up to 10 years of age—Dose must be determined by your doctor.