Best L-Citrulline (2026): Ranked by Cost Per Actual Gram
Informational summary — not medical advice. This page ranks product value; on what citrulline does, see the evidence. Use caution with BP meds, nitrates, or PDE5 inhibitors.
Citrulline is one molecule — so the "best" one is the cheapest per gram of actual citrulline. That means correcting "citrulline malate" for its malic-acid content. Ranked that way, the cost of a real gram of citrulline spans ~6x (about $0.05 to $0.31). Pure powder wins; malate and capsules cost more per gram of what works. Top pick: Nutricost Pure L-Citrulline Powder (600 g).
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| Item | Value |
|---|---|
| Nutricost | $0.05 |
| Bulk pure powder | $0.05 |
| Bulk malate powder | $0.06 |
| Nutricost | $0.07 |
| Bulk malate powder | $0.07 |
| Micro Ingredients | $0.11 |
| ALLMAX | $0.12 |
| NOW Sports | $0.16 |
| Bulk pure capsule | $0.23 |
| Bulk malate capsule | $0.31 |
Same brand, same shelf — very different value BulkSupplements pure L-citrulline powder costs $0.05/g of citrulline; the same brand's citrulline malate 2:1 powder costs $0.07/g — about 44% more per gram of actual citrulline, because ~28% of the malate's weight is malic acid. The malate can look competitive on price per tub; per gram of citrulline, it isn't.
The awards
Pure L-citrulline powder at the lowest verified cost per gram of actual citrulline — 100% citrulline, no malate math. If you want a specific dose (like the ~6 g used for blood pressure), this is the rational buy.
Pure L-citrulline powder with a COA and cGMP/NSF-certified facility — near the value floor per gram of citrulline, from a high-volume brand you can find in stock.
Pure L-citrulline capsules at 3,000 mg per 4-cap serving — the cheapest capsule per gram of citrulline here, if you refuse to measure powder.
If you specifically want the citrulline-malate form used in the performance studies: a third-party-tested 2:1 powder. Just remember only ~72% (at most) is citrulline, so it costs more per gram of what works.
Every product compared, by cost per actual gram of citrulline
Sorted cheapest-first. "Citrulline/container" corrects malate products for their malic-acid content (using the generous theoretical max — real malate content is likely lower, see the ratio breakdown). Full data is a public CC BY JSON file.
| Product | Type | Form | Citrulline/container | Price | $ / g citrulline | $ / 6 g dose | Testing |
|---|---|---|---|---|---|---|---|
| Nutricost Pure L-Citrulline Powder (600 g) | Pure | Powder | 600 g | $29.95 | $0.050 | $0.30 | 3rd-party tested, GMP |
| BulkSupplements L-Citrulline Powder (500 g) | Pure | Powder | 498 g | $24.97 | $0.050 | $0.30 | Third-party tested, cGMP |
| BulkSupplements Citrulline Malate 1:1 Powder (1 kg) | Malate 1:1 | Powder | 565 g | $33.97 | $0.060 | $0.36 | Third-party tested, cGMP |
| Nutricost Citrulline Malate 2:1 Powder (600 g) | Malate 2:1 | Powder | 434 g | $29.95 | $0.069 | $0.41 | 3rd-party tested, GMP |
| BulkSupplements Citrulline Malate 2:1 Powder (500 g) | Malate 2:1 | Powder | 360 g | $25.97 | $0.072 | $0.43 | Third-party tested, cGMP |
| Micro Ingredients L-Citrulline 3,000 mg (240 Capsules) | Pure | Capsule | 180 g | $19.99 | $0.111 | $0.67 | Third-party lab tested, cGMP |
| ALLMAX Citrulline Malate 2:1 Powder (300 g) | Malate 2:1 | Powder | 217 g | $24.99 | $0.115 | $0.69 | — |
| NOW Sports L-Citrulline Pure Powder (4 oz) | Pure | Powder | 113 g | $17.95 | $0.159 | $0.95 | cGMP (NPA A-rated) |
| BulkSupplements L-Citrulline Capsules 3,000 mg (240 ct) | Pure | Capsule | 90 g | $20.97 | $0.233 | $1.40 | Third-party tested, cGMP |
| BulkSupplements Citrulline Malate 2:1 Capsules (240 ct) | Malate 2:1 | Capsule | 65 g | $19.97 | $0.307 | $1.84 | Third-party tested, cGMP |
Prices are live Amazon buy-box figures (Creators API, July 2026); they move. Citrulline grams = servings × compound mg × citrulline fraction ÷ 1000 (fraction: pure 100%, malate 2:1 72.3% max, 1:1 56.6%). Cost per gram = price ÷ citrulline grams.
Frequently asked questions
What is the best L-citrulline supplement?
The cheapest per gram of actual citrulline — which means correcting malate for malic acid. Best overall: Nutricost Pure L-Citrulline Powder. Pure powders win because 100% is citrulline; malate is only ~57–72% at best.
Is citrulline malate or pure L-citrulline cheaper?
Pure is cheaper per gram of actual citrulline. Same-brand, BulkSupplements pure powder beats its own citrulline malate 2:1 per gram of citrulline — the malate hides malic acid in the labeled weight.
Powder or capsules for citrulline?
Powder is far cheaper per gram, and citrulline is dosed at several grams (a 6 g dose is 8+ capsules). Choose capsules only for convenience — you'll pay a large premium per gram.
Related
- L-citrulline: what it is & who it's for
- Citrulline malate 2:1: how much is actually citrulline?
- Dosage guide — clinical dose vs label dose + calculator
- L-citrulline vs L-arginine — the better nitric-oxide precursor
Sources
- Manufacturer labels and live Amazon pricing for all listed products, July 2026. Full dataset: /l-citrulline/cost-by-brand.json (CC BY 4.0).
- Chappell AJ, et al. "Citrulline malate... NMR ratio assay." J Int Soc Sports Nutr. 2018. PMID: 30097067 (basis for the malate-content correction).