Periwinkle Extract (Vinpocetine)
European pharmaceutical for brain circulation. Evidence is mixed, so set expectations accordingly.
Verdict
5/10 Mixed
Evidence
Grade B / 100+ Studies
The No-BS Summary
8 things. 60 seconds. Everything you need.
WHAT IT DOES
European pharmaceutical for brain circulation.
DOES IT WORK?
5/10 Mixed. Semi-synthetic derivative from periwinkle. Increases cerebral blood flow and metabolism. Used as drug in Europe, supplement in US (regulatory gray area). Good for circulation-related cognitive issues.
HOW MUCH TO TAKE
Follow label
COST
$25-60/month depending on brand and form.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Most people notice something by week 2-3.
SAFETY
Safe for most people. No red flags at normal doses.
HOW IT FEELS
Improved mental clarity. Better for poor circulation.
QUICK ANSWERS
+ 4 more questions
DOSE-RESPONSE CURVE
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