These have generally been cases associated with serious underlying diseases or concomitant medications. A high percentage of patients with mononucleosis who receive ampicillin develop an erythematous skin rash. Thus, ampicillin class antibiotics should not be administered to patients with mononucleosis. The possibility of superinfections with mycotic or bacterial pathogens should be kept in mind during therapy. Each dose should be taken with a meal or snack to reduce the possibility of gastrointestinal upset.
Many antibiotics can cause diarrhea.
If diarrhea is severe or lasts more than 2 or 3 days, call your doctor. Keep suspension refrigerated. Shake well before using. Be sure to rinse the spoon or dropper after each use. Follow your doctor's instructions about the amount to use and the days of treatment your child requires.