unspecified/undisclosed form
unspecified/undisclosed form is a unrated form of Grape Seed Extract, used in 2,306 on-market products .
2,306
on-market products
unrated
quality tier
n/a
elemental fraction
Why this tier: Label discloses only the extract (mg) with no standardization; OPC/polyphenol content, which drives potency, is unknown.