Vinpocetine

Vinpocetine is a semi-synthetic derivative of vincamine, an alkaloid extracted from the lesser periwinkle plant (Vinca minor). It selectively inhibits phosphodiesterase type 1 (PDE1) and voltage-sensitive sodium channels, leading to vasodilation of cerebral blood vessels and improved oxygen and glucose utilization in the brain. Vinpocetine also has anti-inflammatory properties through inhibition of NF-kappaB and IkappaB kinase. Developed in Hungary in the 1970s and marketed as Cavinton, it has been prescribed across Europe and Asia for decades for conditions including cerebral circulatory insufficiency, memory disorders, and tinnitus. In the United States, it is available as a dietary supplement, though the FDA has questioned its classification. Clinical trials support its use in improving cognitive function in patients with cerebrovascular disease.