ampicillin

Pharmacy Author:
Medical and Pharmacy Editor:

GENERIC NAME: ampicillin

BRAND NAME: Omnipen (Discontinued brand), Polycillin (Discontinued brand), Principen (Discontinued brand)

DRUG CLASS AND MECHANISM: Ampicillin belongs to a class of antibiotics called penicillins that are used for treating bacterial infections. Other members of this class include amoxicillin (Amoxil), piperacillin (Pipracil), ticarcillin (Ticar) and several others. These antibiotics all have a similar mechanism of action. They stop bacteria from multiplying by preventing bacteria from forming the cell walls that surround them. The cell walls are necessary to protect bacteria from their environment and to keep the contents of the bacterial cell together. Most bacteria cannot survive without a cell wall. Penicillins are most effective when bacteria are actively multiplying and forming cell walls. Ampicillin is effective against many bacteria including H. influenzae, N. gonorrhoea, E. coli, Salmonella, and Shigella, streptococci and certain strains of staphylococci. Ampicillin was approved by the FDA in 1963.

PRESCRIPTION: Yes

GENERIC AVAILABLE: Yes

PREPARATIONS: Capsules: 250 and 500 mg. Powder oral suspension: 125 and 250 mg/5mL. Powder for injection: 250 mg, 500 mg, 1g, and 2 g.

Medically Reviewed by a Doctor on 10/8/2014



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