Nutricost L-Citrulline Powder Review

Nutricost L-Citrulline Powder is a dietary supplement designed to support athletic performance, increase blood flow, and promote cardiovascular health. It provides pure L-Citrulline to help the body produce nitric oxide.

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Product Focus: Sexual Health for MenAlso graded for:CirculationAlso covers:Heart

Tier ⓘ

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Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →

Evidence ⓘ

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How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.

Positive Reviews

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Biohacker Mentions

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Study, Trial or Testing Result SummaryMembersHuman studies

This powder gives 3 grams of citrulline per serving, which is than the 1.5 grams that in the main study. In that controlled trial of 24 men with mild erection , 1.5 grams of citrulline daily for one month brought erection hardness to normal in 12 men, or 50 percent, compared with 2 men, or about 8 percent, on placebo. …

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Review Totals and SummaryMembers4,224 reviews

4,224 reviews · Amazon 2,780 · Nutricost 1,379 · Walmart 65

Nutricost L-Citrulline Powder consistently receives feedback from users across various platforms, with a voicing experiences. reviewers highlight its perceived effectiveness, especially for those using it in their workout routines. …

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Biohacker SummaryMembersWhat our biohacker panel says

The main reasons are blood flow through nitric oxide, a pump and fatigue during workouts, easier recovery, and with erectile . Panelists mention the plain L-citrulline form and citrulline malate, and doses range from 1.5 grams a day for mild erectile , to 3 to 6 grams, 5 grams every morning, and 6 to 8 grams before training. …

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RAL SummaryMembersThe tier and why

Placed in this tier because 70 percent of its 4234 reviews are and human studies support citrulline, including a controlled trial where 1.5 grams daily restored normal erection hardness in half of men with mild erection .

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More DetailsMembersBody systems · Combine with · Possible side effects

Body systems: Cardiovascular system, Reproductive system. Combine with and possible side are for members.

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Supplement FactsL-Citrulline 3 g

Supplement Facts

Serving Size 1 Scoop (3g)

Servings Per Container 200

Amount Per Serving% Daily Value

L-Citrulline

3 g

†

† Daily Value not established.

Other ingredients: Other ingredients: None.

Directions: SUGGESTED USE: As a dietary supplement, mix 1 scoop daily with 6-10 oz of water or as directed by your healthcare professional.

Barcode (UPC) 810014679327 · Label source: Amazon · Report a label change

Where to BuyNutricost · Amazon · iHerb

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Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.