Vinpocetine
A semi-synthetic vincamine derivative used for cerebrovascular disorders and cognitive decline, mainly in Europe and Asia. It has moderate human data but the FDA has warned it is not a lawful dietary supplement and may harm pregnancy.
01 Overview
Vinpocetine is derived from vincamine, an alkaloid of the periwinkle plant. It is marketed as a drug (Cavinton) in several countries for cerebrovascular insufficiency, stroke recovery and age-related memory problems, and is sold as a supplement elsewhere.
In 2019 the US FDA concluded vinpocetine does not meet the definition of a dietary ingredient and warned that it may cause miscarriage or fetal harm, advising against use in pregnancy or by women who could become pregnant.
02 Mechanism
Inhibits phosphodiesterase-1 and blocks voltage-gated sodium channels, increasing cerebral blood flow and having neuroprotective/anti-inflammatory effects.
03 Dosing
| Tier | Dose | Route | Notes |
|---|---|---|---|
| Common | 5–40 mg/day | Oral | Often divided; typical supplement doses 10-30 mg/day. |
04 Effects
| Effect | Magnitude | Evidence | |
|---|---|---|---|
| Cognitive support in cerebrovascular diseaseBenefit reported in older trials of vascular cognitive impairment; healthy-user data is weaker. | Modest | Clinical | |
| Increased cerebral blood flowDemonstrated to raise cerebral perfusion. | Clinical |
05 Side effects
| Effect | Severity | Frequency | Evidence | Countermeasures |
|---|---|---|---|---|
| Hypotension and GI upsetFlushing, low blood pressure, nausea or sleep disturbance. | Mild | Uncommon | Clinical | |
| Reproductive/pregnancy riskAnimal data and FDA analysis indicate possible miscarriage or fetal harm. | Severe | FDA warning | Preclinical |