phenindamine

Phenindamine is a first-generation tricyclic antihistamine and anticholinergic agent closely related to cyproheptadine. It was developed by Hoffmann-La Roche in the late 1940s. Phenindamine acts as a competitive antagonist at histamine H1 receptor, blocking the effects of endogenous histamine and thereby reducing symptoms associated with allergic reactions such as sneezing, runny nose, itching, watery eyes, hives, and rashes. It also exhibits anticholinergic properties and can cross the blood-brain barrier, leading to sedative effects typical of first-generation antihistamines. Phenindamine was used primarily for allergies and common cold symptoms; it was also researched for opioid withdrawal symptom management due to its potentiating effect on narcotic analgesics[1][4][6][7].

Brand names

NolahistThephorin

Other names

phenindamine tartrate