 , Agents producing tachycardia , Amines , Aminoalkyl Ethers , Anesthetics , Anesthetics, Local , Anti-Allergic Agents , Anticholinergic Agents , Antiemetics , Antihistamines for Systemic Use , Antihistamines for Topical Use , Antipruritics, Incl. Antihistamines, Anesthetics, Etc. , Benzene Derivatives , Benzhydryl Compounds , Central Nervous System Agents , Central Nervous System Depressants , Cytochrome P-450 CYP2C19 Substrates , Cytochrome P-450 CYP2C9 Substrates , Cytochrome P-450 CYP2D6 Inhibitors , Cytochrome P-450 CYP2D6 Inhibitors (strength unknown) , Cytochrome P-450 CYP2D6 Substrates , Cytochrome P-450 Enzyme Inhibitors , Cytochrome P-450 Substrates , Dermatologicals , Drugs causing inadvertant photosensitivity , Ethanolamine Derivatives , Ethylamines , First Generation Antihistamines , Gastrointestinal Agents , Histamine Agents , Histamine Antagonists , Histamine H1 Antagonists , Hypnotics and Sedatives , Muscarinic Antagonists , OCT2 Inhibitors , Photosensitizing Agents , Potential QTc-Prolonging Agents , QTc Prolonging Agents , Serotonergic Drugs Shown to Increase Risk of Serotonin Syndrome , Sleep Aids, Pharmaceutical