Grape Seed Extract

Does grape seed extract work?

Overall Effectiveness Rating for Grape Seed Extract

The overall effectiveness rating for grape seed extract is 3 out of 3. This rating means there is ample evidence that using grape seed extract will lead to positive results.

Overall Confidence Rating for Grape Seed Extract

There is one study in the database on grape seed extract; the confidence rating is 20. A score above 80 means the effectiveness rating for this supplement is reliable. A score under 80 means there is insufficient evidence to ensure a reliable effectiveness rating. Note, this rating is for grape seed extract as a whole. There are also individual ratings for the claims below.

Products Containing Grape Seed Extract

Products Containing Grape Seed Extract
NO3 Ultimate
White Warped
R3P Pre Workout
NO3 Chrome Powder
Full list of all 14 products containing Grape Seed Extract.

Individual Claims

The overall ratings above do no necessarily reflect each claim about grape seed extract. Individual claims can have higher or lower ratings. For example, some supplements may have a lot of backing for one claim, but be completely useless for another. Click on claims below for more information.

Cardiovascular Health Claims Effectiveness Rating Confidence Rating
lower total cholesterol levels


Title of Study
Effects of grape seed extract in Type 2 diabetic subjects at high cardiovascular risk: a double blind randomized placebo controlled trial examining metabolic markers, vascular tone, inflammation, oxidative stress and insulin sensitivity