In brief: Citrulline malate is mainly used in strength and endurance sports. Current evidence points to small, context-dependent effects rather than a strong universal performance boost.
What do studies show?
| Area | Interpretation |
|---|---|
| Resistance training | Small possible benefits |
| Endurance | Mixed results |
| “Pump” | Plausible through nitric-oxide pathways |
| Optimal dose | Not clearly established |
A 2026 meta-analysis found a small overall performance effect with low to very low certainty of evidence.[1]
Safety
Higher amounts can cause gastrointestinal symptoms. Extra caution is sensible with very low blood pressure or blood-pressure medication.
FAQ
Is citrulline malate the same as L-citrulline?
No.
Does it reliably improve performance?
No, effects are small and variable.
Is more better?
Not established.
Is it a testosterone booster?
No.
Conclusion
Citrulline malate may offer small training benefits, but it is not a miracle supplement.
