The oral dosage of ampicillin is generally recommended to be 3 capsules per dose for adults, and children need to follow their doctor’s instructions. Aminobenzylpenicillin beta-lactam antibiotic can be used clinically to treat a variety of bacterial infections, such as urinary tract infections, meningitis, respiratory infections, neonatal group B streptococcal infections, and salmonella infections, etc. Adults are generally recommended to take 3 capsules orally each time, 3 times a day, and children need to follow doctor’s instructions for use of the drug. In addition, for the treatment of gonorrhea you need to take 3.5 grams taken as a single dose. Common adverse reactions to ampicillin include abnormal liver function, elevated platelets, elevated granulocytes, etc. It is contraindicated for those who are allergic to penicillins, and needs to be discontinued if severe persistent diarrhea occurs during use. In addition, the application of ampicillin has certain risks, it is recommended to take under the guidance of a specialist.