Pharmacotherapy is the treatment of disease through the administration of drugs. As such, it is considered part of the larger category of therapy. Pharmacists are experts in pharmacotherapy and are responsible for ensuring the safe, appropriate, and economical use of medicines. This review mainly focused as pharmacotherapy specialists, pharmacists have responsibility for direct patient care, often functioning as a member of a multidisciplinary team, and acting as the primary source of drug-related information for other healthcare professionals.