Pharmacology is the scientific discipline that, in the attempt to improve health and cure disease, studies the mechanisms by which drugs change biological systems. Toxicology is the study of mechanisms by which drugs and chemicals in the environment produce unwanted effects. Together these disciplines encompass the molecular basis of drug action, the actions of drugs on cells, organs, and organisms, genetic variations in drug action, and drug discovery.
Pharmacology gives immense scope for exploration into diversified subdomains such as signalling and molecular mechanisms of medicines, clinical pharmacology and Bio pharmaceutics, non-clinical and clinical trials. This opens up opportunities for further academic up gradation, sometimes with funding research projects of national importance supported by government funding agencies.