Optimum Nutrition Tribulus Extract Blend Capsules

Our verdict

Optimum Nutrition Tribulus Extract Blend Capsules works out to $0.16 per serving of tribulus terrestris, at 625mg per serving in capsule form. That puts it around the median of the 16 tribulus terrestris products we can price per dose, where the typical serving costs $0.15, a Value Index of 0.9 where the median product is 1.0. One container lasts 100 days at the label dose of 1 serving a day, about $4.80 a month. Optimum Nutrition appears in the NSF Sport public registry. Worked out from the current retail price as of 2026-11-13; confirm the live price on Amazon.com before buying.