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Vinpocetine is derived from the periwinkle plant, is readily bioavailable and crosses the blood brain barrier. There is preliminary evidence to suggest vinpocetine can counteract neural inflammation and improve reaction time, working memory and attention.


Structure of Vinpocetine

Vinpocetine is absorbed when taken through oral ingestion, or when applied topically. Interestingly, Vinpocetine appears to accumulate in particular brain regions. Specifically, the thalamus (central relay for motor and sensory coordination, also involved in the regulation of alertness and sleep), basal ganglia ( a group of structures linked to the thalamus involved in coordinating motor function), putamen, and visual cortex.

Vinpocetine appears to have multiple molecular pathways with which it interacts. However, the most significant appear to be its effect on cyclic nucleotide metabolism and subsequent vascular relaxation. Vinpocetine has been shown to inhibit calcium-dependent phosphodiesterase enzymes, which are involved in producing cyclic GMP – a molecular that regulates blood vessel tone or stiffness.

Effects on attention and working memory

In a study of 12, healthy, female volunteers, 40 mg of Vinpocetine improved memory, using the Sternberg technique. The Sternberg test involves the presentation of a list of items to memorize, followed by a memory maintenance period, during which these items must be kept in memory. Though the number of subjects here is small and the finding is un-replicated, this evidence suggests there might be an improvement in working memory and attention with the administration of vinpocetine.

Another study of 24 healthy volunteers, investigated study found that Ginkgo biloba (40 mg) and Vinpocetine (10 mg) taken together significantly decreased reaction times for a working memory task after the combination was consumed for 14 days. The accumulation of vinpocetine in motor portions of the brain suggests that this reaction time increases may be a result of enhanced motor function.


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