OPCs (Proanthocyanidins)
Solid evidence for targeted benefits. Not a miracle worker, but genuinely useful for the right person.
Verdict
6/10 Mixed
Evidence
Grade B / 100+ Studies
The No-BS Summary
8 things. 60 seconds. Everything you need.
WHAT IT DOES
Grape seed flavanols for circulation
DOES IT WORK?
6/10 Mixed. Grape seed and pine bark flavanols for circulation.
HOW MUCH TO TAKE
100-300mg daily
COST
Mid-range. $35-50/month. Standard for most people.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Give it 4-8 weeks for full effects. Patience pays.
SAFETY
Safe for most people. No red flags at normal doses.
HOW IT FEELS
May improve skin and vascular health
QUICK ANSWERS
+ 4 more questions
DOSE-RESPONSE CURVE
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