Betahistine

Betahistine dihydrochloride is a histamine-like drug in which pharmacological activity can be attributed to a specific effects and/or more direct influences on recovery mechanisms the vestibular nuclei. It has weak agonist activity at histamine H₁ receptors and moderate antagonist activity at H₃ receptors. Betahistine may increase blood flow to the cochlear region as well as to the whole brain.