Amoxicillin in the size of 0.5 g/capsule is taken one capsule at a time for adults. The exact dosage needs to be taken under the guidance of a doctor, and the appropriate dosage should be chosen according to the degree of the disease. Amoxicillin is a commonly used penicillin antibiotic with broad spectrum. Generally adults take 0.5 grams at a time, three times a day, about 6 hours apart, either on an empty stomach or after meals. If the infection is severe, adult patients need to increase the single dose or the number of doses, such as four times a day, but the daily dose should not exceed 4 grams. In addition, patients with low renal function need to prolong the interval between doses to reduce the metabolic burden on the kidneys, which can be taken once after an interval of 8 hours. Penicillin allergy is prohibited to take amoxicillin, if there is diarrhea, vomiting and other adverse reactions, should promptly go to the hospital to consult a doctor.