This medicine may interact with the following medications:

-allopurinol
-birth control pills
-certain antibiotics like chloramphenicol, erythromycin, sulfamethoxazole, tetracycline
-probenecid

They need to know if you have any of these conditions:

-kidney disease
-an unusual or allergic reaction to ampicillin, other penicillins or antibiotics, other medicines, foods, dyes, or preservatives
-pregnant or trying to get pregnant
-breast-feeding

Tell your health care provider if your symptoms do not start to get better or if they get worse.

This medicine may cause serious skin reactions. They can happen weeks to months after starting the medicine. Contact your health care provider right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. Or, you might notice a red rash with swelling of the face, lips or lymph nodes in your neck or under your arms.

Do not treat diarrhea with over the counter products. Contact your health care provider if you have diarrhea that lasts more than 2 days or if it is severe and watery.

If you have diabetes, you may get a false-positive result for sugar in your urine. Check with your health care provider.

Birth control may not work properly while you are taking this medicine. Talk to your health care provider about using an extra method of birth control.

Keep out of the reach of children and pets.

Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Throw away any unused drug after the expiration date.