Best L-Citrulline Supplements 2026: Cost per Effective Dose
Top pick for L-Citrulline: Nutricost Pure L-Citrulline Powder (600 g) — 3000mg compound per 1 scoop (3 g), 3rd-party tested, GMP, $0.30/day. Our best-value pick.
All L-Citrulline Supplements Compared
All 10 products sorted by cost per clinically-effective daily dose (lowest first). Dose, certification, and pricing verified against NIH DSLD and manufacturer data.
| Product | Brand | Dose / Serving | Cost / Day | Certification | Pick | Buy |
|---|---|---|---|---|---|---|
| Nutricost Pure L-Citrulline Powder (600 g) | Nutricost | 3000mg compound / 1 scoop (3 g) | $0.30 | 3rd-party tested, GMP | Best Value | Buy |
| BulkSupplements L-Citrulline Powder (500 g) | BulkSupplements | 3000mg compound / 3 g (~1/2 tsp) | $0.30 | Third-party tested, cGMP | Buy | |
| BulkSupplements Citrulline Malate 1:1 Powder (1 kg) | BulkSupplements | 3000mg compound / 3 g (~1 tsp) | $0.36 | Third-party tested, cGMP | Buy | |
| Nutricost Citrulline Malate 2:1 Powder (600 g) | Nutricost | 3000mg compound / 1 scoop (3 g) | $0.41 | 3rd-party tested, GMP | Buy | |
| BulkSupplements Citrulline Malate 2:1 Powder (500 g) | BulkSupplements | 3000mg compound / 3 g (~1 1/4 tsp) | $0.43 | Third-party tested, cGMP | Buy | |
| ALLMAX Citrulline Malate 2:1 Powder (300 g) | ALLMAX | 2000mg compound / 1 scoop (2 g) | $0.69 | None stated | Buy | |
| Micro Ingredients L-Citrulline 3,000 mg (240 Capsules) | Micro Ingredients | 3000mg compound / 4 capsules | $0.73 | Third-party lab tested, cGMP | Buy | |
| NOW Sports L-Citrulline Pure Powder (4 oz) | NOW Sports | 1500mg compound / 1/2 tsp (~1.5 g) | $0.94 | cGMP (NPA A-rated) | Buy | |
| BulkSupplements L-Citrulline Capsules 3,000 mg (240 ct) | BulkSupplements | 3000mg compound / 8 capsules | $1.27 | Third-party tested, cGMP | Buy | |
| BulkSupplements Citrulline Malate 2:1 Capsules (240 ct) | BulkSupplements | 3000mg compound / 8 capsules | $1.66 | Third-party tested, cGMP | Buy |
Our Picks
Best Value: Nutricost Pure L-Citrulline Powder (600 g)
3000mg compound per 1 scoop (3 g). 3rd-party tested, GMP. $0.30/day. 200 servings per container at $29.95.
How We Rank L-Citrulline Supplements
Every product is evaluated on three criteria:
- Cost per day. Not cost per pill or cost per bottle — what it actually costs per day at the product's labelled serving. Where a category's servings differ in strength we flag it above the table, because cost per day is only comparable when the doses are.
- Third-party certification. USP Verified, NSF Certified for Sport, and ConsumerLab Approved indicate independent testing for purity, potency, and contaminants.
- Bioavailable form. We prioritize products using the specific chemical form shown to be most effective in published research.
Rankings are not influenced by affiliate commissions. We earn the same commission regardless of which product you choose. Read our full methodology.
Personalize Your L-Citrulline Choice
Not sure which l-citrulline supplement is right for you? Use our free tools:
- DNA Supplement Analyzer — upload 23andMe or AncestryDNA data to check for genetic variants affecting l-citrulline metabolism. Runs entirely in your browser.
- Lab Results Interpreter — enter your blood test values to get personalized dosing recommendations.
- Supplement Stack Builder — build a complete protocol based on your age, sex, medications, and goals.
- Supplement Audit — already taking l-citrulline? Check if you have the right form and dose.
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