Lexi-Drug Allergies addresses drug allergies, including reactions by drug class, considerations when managing patients with reported allergies, and more. This innovative database is based on integration of scientific and clinical literature and offers unique insight on allergic mechanisms, concepts, and categorizations. In addition, this database discusses idiosyncratic reactions which may be confused with allergy, either due to clinical presentation or patient-reported events. This data will assist the clinician in addressing allergy-related issues which are often difficult to interpret in clinical practice.