Supplement researchSourced from PubMed and NIH
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Supplement × Supplement·Evidence index

Citrulline Malate and L-Citrulline: what the research found

PubMed indexes 8 records that name Citrulline Malate and L-Citrulline together, either in the title or in an interaction, co-administration, or pharmacokinetic context. The key findings come first, in the authors’ own words, followed by every study with its design and PubMed link.

A summary of published research, not medical advice. A pharmacist can check any combination against your full list of medicines and supplements.

Key findings

What the studies concluded.

Reviews and human studies first. Each quote is the authors’ own conclusion about their study, not a NutriStack assessment, and a single study is not a consensus.

“The mean effects were similar for "limbs" (upper vs lower) [p = 0.763]. Accordingly, our findings suggest that citrulline malate supplementation does not improve muscle strength in healthy and resistance-trained individuals (PROSPERO registration number: CRD42020159338).”

Aguiar et al. · 2022 · Review or meta-analysis · details

“Six weeks of CM supplementation combined with multicomponent training was associated with improved sit-to-stand performance in older women, with additional favourable trends in walking endurance, SPPB score, and 25(OH)D. Given the pilot nature of the study, these findings should be considered preliminary and hypothesis-generating. Larger and longer trials are needed to confirm the reproducibility, clinical…”

The research

8 studies naming Citrulline Malate and L-Citrulline.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

Effects of Citrulline Malate Supplementation on Muscle Strength in Resistance-Trained Adults: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

Journal of dietary supplements · 2022 · PMID 34176406

Meta-AnalysisSystematic ReviewHuman subjects

“The mean effects were similar for "limbs" (upper vs lower) [p = 0.763]. Accordingly, our findings suggest that citrulline malate supplementation does not improve muscle strength in healthy and resistance-trained individuals (PROSPERO registration number: CRD42020159338).”

Aguiar et al. · From the abstract

Names both Citrulline Malate and L-Citrulline in its title.

Short-term citrulline malate supplementation enhances lower-limb function in physically active older women: A pilot randomized controlled trial.

Clinical nutrition ESPEN · 2026 · PMID 42162613

Randomized Controlled Trial

“Six weeks of CM supplementation combined with multicomponent training was associated with improved sit-to-stand performance in older women, with additional favourable trends in walking endurance, SPPB score, and 25(OH)D. Given the pilot nature of the study, these findings should be considered preliminary and hypothesis-generating. Larger and longer trials are needed to confirm the reproducibility, clinical significance, and potential mechanisms of these effects.”

Ramos-Hernández et al. · Authors' conclusion

Names both Citrulline Malate and L-Citrulline in its title.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

How to read this page

A literature summary, not guidance.

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Citrulline Malate, L-Citrulline, and several hundred other substances.

Log your routine, get reminders at the times you choose, and scan a label to add a product. The checker is a research and organisation tool, not a clinical decision aid.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.