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Grape seed extract (OPC)
Full ranking Dose tool Products (977)
Key facts
Daily Value (US FDA)—
Tolerable Upper Intake Level (UL)— Authoritative daily maximum: 475 mg
Median（Per day）31.6 mgP5 5 – P95 200
Products977
Sources: https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=grape.seed.extract&lang=eng · Health Canada NNHPD monograph: not to exceed 475 mg grape seed extract/day
Daily dose across products（mg/day）
Authoritative daily maximum 475
0.39 mglog scale · n=977450 mg
Label data from official national databases and brand websites, as declared; not lab-verified.
Top ranked
| Rank | Brand | Product | Per day | Score |
|---|---|---|---|---|
| 1 | International Vitamin Corporation | Grapeseed 100 mg Standardized Extract Softgels | 100 mg | 84.0 |
| 1 | Nutralab Canada Corp. | MapleLife¿ Nutrition and Formula Grape Seed OPC 60 mg Capsules | 60 mg | 84.0 |
| 1 | Integria Healthcare (Australia) Pty Ltd | One-A-Day Grape Seed 19000 | 158 mg | 84.0 |
| 4 | Swisse | SWISSE ULTIBOOST GRAPE SEED EXTRACT PLUS TABLET | 119 mg | 76.2 |
| 5 | Vitacost | Grape Seed Extract 200 mg | 200 mg | 75.0 |
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.