Indicated for: allergic rhinitis; urticaria
Route of administration: cutaneous
Substance: diphenhydramine (antihistamine)
ATC: D04AA32 (Dermatologicals | Antipruritics, including antihistamines, anesthetics, etc. | Antihistamines for topical use)
Diphenhydramine is an antihistamine used for the treatment of allergies, insomnia, and motion sickness. It works by blocking histamine H1 receptors, thereby reducing allergic symptoms such as itching, sneezing, and nasal discharge.
The medication is administered orally, by injection, or topically, depending on the indication. It is important to follow the recommended dose to avoid side effects.
Side effects may include drowsiness, dizziness, dry mouth, or gastrointestinal disturbances. In rare cases, severe allergic reactions or confusion, especially in the elderly, may occur.
Diphenhydramine is not recommended for patients with closed-angle glaucoma, bronchial asthma, or hypersensitivity to this medication.