Performance
L-Citrulline / Citrulline Malate
Also known as: L-Citrulline, Citrulline malate
Converts to arginine, boosting nitric oxide. Enhances blood flow and reduces fatigue.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every L-Citrulline / Citrulline Malate product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | BulkSupplements L-Citrulline Powder | 91 A | $0.07 |
| 2 | Transparent Labs BULK Pre-Workout | 90 A | $1.67 |
| 3 | Nutricost Pre-Workout For Women Powder | 89 A | $0.73 |
| 4 | Nutricost Pre-Workout Complex | 89 A | $0.83 |
| 5 | Double Wood L-Citrulline Supplement | 88 A | $0.19 |
| 6 | NOW Foods L-Citrulline Pure Powder | 87 A | $0.28 |
| 7 | Onnit Total Nitric Oxide - Harvest Fruit (20 Serving Tub) | 85 A- | $2.00 |
| 8 | BulkSupplements L-Citrulline DL-Malate 1:1 Powder | 84 A- | $0.26 |
| 9 | Micro Ingredients L-Citrulline Malate Powder | 84 A- | $0.17 |
| 10 | Gorilla Mind Gorilla Mode Nitric | 82 A- | $1.50 |
| 11 | Pure Encapsulations Nitric Oxide Ultra (capsules) | 78 B+ | $1.43 |
| 12 | Doctor's Best L-Citrulline Powder, 7 oz (200 g) | 78 B+ | $0.33 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much L-Citrulline / Citrulline Malate should I take?
The typical range is 6-8g L-citrulline or 8-10g citrulline malate. Acute effects, daily dosing beneficial
When should I take L-Citrulline / Citrulline Malate?
30-60 min pre-workout. Either.
Which form of L-Citrulline / Citrulline Malate is best?
L-Citrulline — Pure form. Other forms in the catalog: Citrulline malate 2:1.
Is L-Citrulline / Citrulline Malate safe?
Commonly reported: GI upset at high doses. Serious warnings: None significant. No concerns
Which L-Citrulline / Citrulline Malate supplement scores highest?
BulkSupplements L-Citrulline Powder, at 91/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Daily target & upper limit
6 g / dayL-Citrulline / Citrulline Malate has an established daily reference intake. See best forms, label synonyms, upper-limit warnings, and top-scoring supplements:
L-Citrulline / Citrulline Malate dosage reference →Primary uses
- Pump
- Endurance
- Blood flow
- Fatigue reduction
How it works
- Converts to arginine (better than direct arginine)
- Increases nitric oxide
- Reduces lactate and ammonia
Dosage
- Typical range
- 6-8g L-citrulline or 8-10g citrulline malate
- Timing
- 30-60 min pre-workout
- With food
- Either
- Duration
- Acute effects, daily dosing beneficial
- Special populations
- Athletes, cardiovascular support
Forms
- L-Citrulline
- Citrulline malate 2:1
Safety
Common side effects
- GI upset at high doses
Contraindications
- None known
Products containing L-Citrulline / Citrulline Malate
Top-scoring supplements in our catalog that list L-Citrulline / Citrulline Malate on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Well-established for performance
Grade A: Multiple well-designed human trials support the main claims.
Related in Performance
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.