Independent supplement ratingsUS and Canada · Updated weekly
A ratings desk for a category that has spent thirty years grading its own homework.
A ratings desk for a category that has spent thirty years grading its own homework.
Powder · 200 g · 66 servings
3,000mg citrulline / 3,000–6,000mg studied
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The one product here that puts a studied dose in a single scoop. Three grams of L-citrulline, one ingredient, no blend — and the blood-flow research starts at 3,000 mg a day. Everything else in this category doses under the range, and the pills we used to rate hid the number entirely. At $0.33 a serving that works out at about eleven cents per gram of citrulline: a shade more than the malate powder below it, for not having to round your own serving up. Brand-tested rather than certified, which is the only thing holding its ingredients score back.
One scoop, roughly 3 g, delivering 3,000 mg of L-citrulline and nothing else — no flavouring, no sweetener, no blend. This is free-form citrulline rather than citrulline malate, so the figure on the panel is the figure you take; there's no two-thirds conversion to do. About 66 servings in the 200 g tub.
Anyone who wants the amount the trials used without measuring it out twice. It's a supplement rather than a treatment for anything — if something is wrong, that's a conversation with a doctor and not a tub of powder. What the citrulline research actually says →
Reviewed and fact-checked by the NFS editorial team · Last updated 08 Aug 2026