Adverse drug reactions are one of the leading causes of morbidity and mortality in healthcare. An adverse drug reaction is defined as any unintended, harmful, or undesirable response to a drug given at normal human doses. Reactions should be reported to physicians and pharmacists if they result in changes to drug therapy, require additional treatment like epinephrine or steroids, prolong hospital stays, or cause complications or death. When reporting a reaction, provide details on the suspected drug, when it was given, the type of adverse effect, when it occurred, any treatment given, and the outcome.