Ampicillin is one of the most widely prescribed antibiotics.

It is considered a penicillin and is a close relative of another penicillin, amoxicillin. Unlike penicillin, ampicillin and amoxicillin can penetrate and prevent the growth of certain types of bacteria, called gram-negative bacteria.

Ampicillin is used mainly to treat infections of the middle ear, sinuses, bladder, kidney, and uncomplicated gonorrhea. Ampicillin also is used intravenously to treat meningitis and other serious infections.

Take ampicillin capsules with a full glass of water, a half hour before or 2 hours after a meal. The oral suspension should be shaken well before using. Take ampicillin medication exactly as prescribed. Ampicillin works best when there is a constant amount in the body. Take your Ampicillin doses at evenly spaced times around the clock, and try not to miss a ampicillin dose.

If you miss a dose:
Take it as soon as you remember. If it is almost time for

If ampicillin is taken with certain other drugs the effects of either could be increased, decreased, or altered.

It is especially important to check with your doctor before combining ampicillin with any of the following: Allopurinol (Zyloprim), Atenolol (Tenormin), Chloroquine (Aralen), Mefloquine (Lariam), Oral contraceptives.

The effects of ampicillin during pregnancy have not been adequately studied. If you are pregnant or plan to become pregnant, inform your doctor immediately.

Ampicillin should be used during pregnancy only if the potential benefit justifies the potential risk to the developing baby.

Ampicillin appears in breast milk and could affect a nursing infant. If Ampicillin medication is essential to your health, your doctor may advise you to stop breastfeeding until your treatment is finished. If

Side effects of Ampicillin cannot be anticipated. If any develop or change in intensity, inform your doctor as soon as possible. Only your doctor can determine whether it is safe for you to continue taking Ampicillin.

Ampicillin Side effects may include: Colitis (inflammation of the bowel), diarrhea, fever, itching, nausea, rash or other skin problems, sore tongue or mouth, vomiting.