Each 1 gm contains:

Ampicillin (as trihydrate) 200 mg

Ampicillin is one of the most valuable semisynthetic penicillins because whilst it retains the typical Gram – positive activity of benzyl -penicillins it possesses greatly enhanced activity against Gram – negative bacteria, so it can be described as a true bactericidal broad spectrum antibiotic.

Ampicillin is absorbed in the upper part of the intestine and excreted in high concentrations in the bile, this means that ampicillin may be returned to the intestinal lumen through an enterohepatic circulation which makes it valuable in the treatment of enteric infections.