API (Active Pharma Ingredients) are substances intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease or to effect the structure and function of the body. Sometimes a drug may also contain several API and the reaction or response to any particular drug will depend on the dosage prescribed, which varies from person to person. The function of the API is not limited to treatment or cure of the disease or symptoms alone though they are also used for diagnosis or prevention at times. It is the basic drug itself with the desired medicinal (pharmaceutical) properties. Also referred to as Bulk Drugs. The APIs Azithromycin, Benzyl penicillin, Cabergoline, Carboplatin, Cephalexin, Cephalothin, Ceftazidime, Cisplatin, Clarithromycin, Ceftriaxone as well as their respective salts, esters, ethers and hydrates.