Oligomeric proanthocyanidins (OPCs) and pine bark extract (Pycnogenol) are the headline ingredients shoppers see on the OPC-3 product page.
This is shopping and lifestyle content only — read the live our partner store label for serving size and warnings.
When you are ready, use the TW or US johnny520 buttons so the order stays on Chengtong Zhihuis affiliate path.
Research & certification references
Third-party sources below discuss the OPC / Pycnogenol ingredient class—not this specific SKU. They do not prove this product treats any disease. Always read the live our partner store label.
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 — oligomeric proanthocyanidins (OPC) literature · NIH / NLM
- PubMed — Pycnogenol clinical studies index · NIH / NLM
- Pycnogenol — published research library · Horphag Research (ingredient sponsor)
Quality & certification context
- FDA — questions and answers on dietary supplements · U.S. FDA
- NSF — dietary supplement GMP certification overview · NSF International
What shoppers usually compare
- Listing-focused: OPC sources + Pycnogenol called out on-page
- Powder format vs softgel — different prep habit
- Exclusive Isotonix / 愛尚它 brand lane
- CTA keeps johnny520 in every market link
Ready to order? Keep johnny520 in the URL.
Alternate global entry (global.our partner store/johnny520)
Affiliate link — commission may apply. Not medical advice.
Supplement note: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Lifestyle shopping content only.