Ampicillin

Ampicillin is an antibiotic in the penicillin group of drugs. It fights bacteria in your body. Ampicillin is used to treat many different types of infections caused by bacteria, such as ear infections, bladder infections, pneumonia, gonorrhea, and E. coli or salmonella infection.

Use Ampicillin as directed by your doctor.

• Take Ampicillin by mouth at least one-half hour before or 2 hours after eating.
• Take Ampicillin with a full glass of water (8 oz/240 mL).
• Take Ampicillin on a regular schedule to get the most benefit from it. Taking Ampicillin at the same time each day will help you remember to take it.
• To clear up your infection completely, use Ampicillin for the full course of treatment. Keep using it even if you feel better in a few days.

Ampicillin is a penicillin antibiotic. It works by killing sensitive bacteria by interfering with formation of the bacteria's cell wall while it is growing. This weakens the cell wall and it ruptures resulting in the death of the bacteria.

If you miss a dose of Ampicillin and are taking it regularly, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Store Ampicillin at room temperature, between 68 and 77 degrees F (20 and 25 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep in a tight, light-resistant container. Keep Ampicillin out of the reach of children and away from pets.

Do not use Ampicillin if:

• you are allergic to any ingredient in Ampicillin or any other penicillin antibiotic (e.g., amoxicillin).

• if you are pregnant, planning to become pregnant, or are breast-feeding
• if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
• if you have allergies to medicines, foods, or other substances
• if you have a stomach infection, diarrhea, or mononucleosis ("mono")
• if you have had a severe allergic reaction (eg, a severe rash, hives, breathing difficulties, dizziness) to a cephalosporin antibiotic (eg, cephalexin) or other beta-lactam antibiotic (eg, imipenem)

• Tetracyclines (eg, doxycycline) because they may decrease Ampicillin 's effectiveness
• Allopurinol because the risk of skin rash may be increased
• Anticoagulants (heparin, warfarin) or methotrexate because the risk of their side effects may be increased by Ampicillin
• Aminoglycosides or birth control pills because their effectiveness may be decreased by Ampicillin