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Citrulline Malate — Frequently Asked Questions

This content is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement. Full disclaimer

Frequently Asked Questions

Is citrulline malate better than L-arginine for pumps?

Yes. Oral L-arginine is extensively metabolized by intestinal and hepatic arginase, meaning only a fraction reaches systemic circulation. L-citrulline bypasses this first-pass metabolism and is converted to arginine in the kidneys, resulting in significantly higher plasma arginine levels. Schwedhelm et al. (2008) confirmed citrulline supplementation raises arginine levels more than arginine itself.

What is the difference between citrulline malate and pure L-citrulline?

Citrulline malate combines L-citrulline with malic acid (typically 2:1 ratio), so 6 g provides about 4 g citrulline and 2 g malate. Pure L-citrulline provides only the amino acid. Most performance studies used citrulline malate, but pure L-citrulline at 3-6 g is similarly effective for NO production. The malate may offer minor additional aerobic benefits.

Can I take citrulline malate on rest days?

While most benefits are acute (pre-workout), some research suggests daily citrulline supplementation may support vascular health and blood pressure over time. On rest days, a lower dose of 3-4 g can be taken for general cardiovascular support, though it is not strictly necessary.

Full Citrulline Malate Guide

References

  1. (). Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. Journal of Strength and Conditioning Research. DOI
  2. (). Pharmacokinetic and pharmacodynamic properties of oral L-citrulline and L-arginine. British Journal of Clinical Pharmacology. DOI
  3. (). Oral L-citrulline supplementation enhances cycling time trial performance. Journal of the International Society of Sports Nutrition. DOI