Best Grape Seed Extract Supplements 2026: Cost per Effective Dose
Top pick for Grape Seed Extract: NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) — 100mg GSE extract per 1 veg capsule, cGMP; widely recognized brand, $0.06/day.
Registry check · Grape Seed Extract
Does anyone independently verify Grape Seed Extract supplements?
We did not find any of these products in a public registry, and none of the listings names a certification mark. Where a listing names a mark, we say so in the table; where we could not find it in a registry, we say that instead.
The 6 products on this page checked against all 5,317 US NSF, USP and Informed Sport listings, 2026-08-25. Full method and limitations.
What Grape Seed Extract labels show
Priced per day, these grape seed extract products run $0.06 to $0.38 — a 6.3× gap between the cheapest and dearest grape seed extract here, across 6 brands.
Which row that favours is not obvious: NOW Foods NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) is cheapest per serving at $0.06, but its serving sits below the median here, so part of that price gap is simply a smaller capsule.
All Grape Seed Extract Supplements Compared
| Product | Brand | Dose / Serving | Cost / Day | Certification (as labelled) | Pick | Buy |
|---|---|---|---|---|---|---|
| NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) | NOW Foods | 100mg GSE extract / 1 veg capsule | $0.06 | cGMP; widely recognized brand | Buy | |
| Nutricost Grape Seed Extract 400mg (95% Proanthocyanidins, 70:1 Extract) | Nutricost | 400mg GSE extract / 1 capsule | $0.08 | None claimed | Buy | |
| Bronson Grape Seed Extract 400mg (95% OPCs) | Bronson | 400mg GSE extract / 1 capsule | $0.11 | None claimed | Buy | |
| Puritan's Pride Grapeseed Extract 200mg (2 Capsules/Day) | Puritan's Pride | 400mg GSE extract / 2 capsules | $0.15 | None claimed | Buy | |
| Doctor's Recipes Grape Seed Extract 500mg (95% OPCs) | Doctor's Recipes | 500mg GSE extract / 1 capsule | $0.27 | None claimed | Buy | |
| Life Extension Grapeseed Extract with Vitamin C, Resveratrol & Calcium | Life Extension | 100mg (combo, isolated GSE mg not disclosed) / 1 capsule | $0.38 | Combo product: grape seed extract + vitamin C + resveratrol + calcium — NOT a pure GSE product | Buy |
In-Depth Grape Seed Extract Guides
Go deeper on grape seed extract — by goal, by form, and what the evidence actually supports:
Our Picks
Lowest Cost: NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C)
100mg GSE extract per 1 veg capsule. cGMP; widely recognized brand. $0.06/day. 200 servings per container at $12.23.
NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) →
The shelf · Grape Seed Extract
These Grape Seed Extract servings are not comparable to each other
NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) states 100 mg a serving and Doctor's Recipes Grape Seed Extract 500mg (95% OPCs) states 500 mg, both occupy one row of the same price column. So NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) showing $0.06 a day, the lowest here, may be reporting a smaller serving rather than a better price. Before comparing NOW Foods Grape Seed 100mg (90% Standardized, with Vitamin C) with Life Extension Grapeseed Extract with Vitamin C, Resveratrol & Calcium, check what each calls a serving.
Method: the 6 Grape Seed Extract products above, compared on label facts, serving size, servings per container, form, price. Not a dosing recommendation.
How these 6 Grape Seed Extract products were ranked
Not one of these 6 grape seed extract products could be confirmed in the NSF, USP or Informed Sport registries, so verification separates none of them and the ranking falls to cost per day at the labelled serving. Commission does not enter it: the rate is the same whichever grape seed extract you buy. Full methodology.