OPC & Pycnogenol blend

Grape seed, pine bark (Pycnogenol), and related proanthocyanidins headline the OPC-3 listing. Research libraries live here; product CTAs stay on the SKU cluster.

Also known as: OPC · oligomeric proanthocyanidins · Pycnogenol · grape seed extract · 原花青素 · 葡萄籽萃取 · 碧蘿芷

Research & certification references

Sources discuss OPCs and Pycnogenol as ingredient classes—they do not prove this product treats any disease.

Reference locale (EN): U.S. NIH, FDA, and PubMed. Traditional Chinese pages use Taiwan MOHW/TFDA/HPA; Japanese pages use MHLW/NIHN. Do not mix locales on one page.

Independent research

PubMed — OPC literature · NIH / NLM
PubMed — Pycnogenol clinical index · NIH / NLM
Pycnogenol — published research library · Horphag Research

Quality & certification context

FDA — dietary supplement Q&A · U.S. FDA
NSF — supplement GMP overview · NSF International

Exclusive picks with OPC / Pycnogenol blend

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Buy — Isotonix OPC-3 (US)

Supplement note: These statements have not been evaluated by the Food and Drug Administration. Not intended to diagnose, treat, cure, or prevent any disease. Not medical advice.