GNC Herbal Plus St. John's Wort Extract 300MG

Our verdict

GNC Herbal Plus St. John's Wort Extract 300MG works out to $0.11 per serving of st. john's wort, at 300mg per serving in capsule form. That puts it below the median of the 24 st. john's wort products we can price per dose, where the typical serving costs $0.12, a Value Index of 1.2 where the median product is 1.0. One container lasts 200 days at the label dose of 1 serving a day, about $3.18 a month. We could not verify a third-party certification for GNC in a public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.