Drug Regulatory Affairs refers to all or any aspects within the pharmaceutical development process and the way they're subject to varied degrees of regulation. The pharmaceutical law frame, guidelines covering Quality, Safety and Efficacy also as Health Authorities' attitudes and requirements etc. have an excellent influence on the drug development process and therefore the success of it. Regulatory affairs professionals affect these aspects. Regulatory Affairs plays an important role within the pharmaceutical industry and is involved altogether stages of drug development and also after drug approval and marketing. The drug development process may be a lengthy, complex and very costly albeit necessary process. Pharmaceutical companies use all the info accumulated during discovery and development stages so as to register the drug and thus market the drug.