The branch of microbiology that deals with the study of microorganisms associated with the production of pharmaceuticals. The pharmaceutical microbiology involves the development of anti-infectious agents and researches the use of microorganisms to develop new pharmaceutical products. The important uses of microorganisms in the pharmaceutical industries are the production of antibiotics, vaccines, and recombinant DNA strains. The main objective of pharmaceutical microbiologists is drug safety which is to test and ensure sterility, determine effectiveness, contamination or bioburden, analyze toxins (exotoxin or endotoxin) of the drugs. The common pharmaceuticals produced from microorganisms are dextrose, vitamins and amino acids, enzymes, antibiotics, microbial assays and enzymatic assays.