Cinnarizine is a drug used for the management of labyrinthine disorder symptoms, including vertigo, tinnitus, nystagmus, nausea, and vomiting. Cinnarizine could be also viewed as a nootropic drug because of its vasorelaxating abilities (due to calcium channel blockage), which happen mostly in brain. Combination use of cinnarizine with other nootropics, such as piracetam resulted in enhanced effect of boosting brain oxygen supply. Cinnarizine is an antihistamine and a calcium channel blocker. Cinnarizine inhibits contractions of vascular smooth muscle cells by blocking L-type and T-type voltage gated calcium channels. By blocking the entrance of extracellular calcium into the cell, it prevents smooth muscle contraction. This produces vasodilation which decreases blood pressure. Side effects experienced while taking cinnarizine range from the mild to the quite severe. Possible side effects include drowsiness, sweating, dry mouth, headache, skin problems, lethargy, gastrointestinal irritation, hypersensitivity reactions, as well as movement problems/muscle rigidity, and tremor.

Cinnarizine Calcium Channel Vasodilation Pathway References