Drugs designing technology has grown so fast with the aid of computer technologies. Medicinal chemistry is the study of principles used for drug discovery and design covering physiology and biology.   This blog focuses on Drugs, their Action and Discovery, Drug Structure and Solubility, Structure-activity and quantitative structures relationships, Computer aided drug design, Combinatorial Chemistry, Drugs from natural sources, Biological Membranes, Receptors and Messengers, Enzymes, Nucleic Acids, Pharmacokinetics, Drug metabolism, Complexes and chelating agent, Nitric oxide,An Introduction to drug and analogue synthesis,Drug Development and Production