Drug intolerance or drug sensitivity refers to associate degree inability to tolerate the adverse effects of a medicine, typically at therapeutic or subtherapeutic doses. Conversely, a patient is alleged to be tolerating a drug once they will tolerate its adverse effects. Its to not be confused with a drug hypersensitivity reaction, that could be a type of drug intolerance, however needs associate degree immune-mediated part. Its additionally not to be confused with drug tolerance that refers to a scarcity of adverse effects even at on top of average doses. Some instances of drug intolerance square measure celebrated to result from genetic variations in drug metabolism. Pharmacovigilance and Pharmacoepidemiology Journal offer a stage in Pharmacoepidemiology Researches and related subjects. Journal accepts leading forefront original research papers, review manuscripts, case reports and commentary in the field. Our target audience, readers and contributors are worldwide. Pharmacovigilance and Pharmacoepidemiology is a scholarly journal maintaining high standards of Pharmacoepidemiology Researches. This Journal runs with scientific excellence and propagates the peer review process very quickly. Pharmacoepidemiology Researches invites an article to publish in the Journal of Pharmacovigilance and Pharmacoepidemiology.