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Compound Profile

Citrulline Malate

High rep performance; blood flow support; safety screen: hypotension; nitrate/PDE5 medication review.

Review needed — May lower blood pressure; review with nitrates, PDE5 inhibitors, or hypotension. Details

Last reviewed: •1 source citedReport a correctionProfile-wide ·D Preliminary
Citrulline Malate monograph visual
Generated profile category visual

At a glance

From this profile's structured data
Evidence
Grade D
Safety
May lower blood pressure; review with nitrates, PDE5 inhibitors, or hypotension.
Profile context
nitric oxide pathways, urea cycle
Next steps

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Quick stats

Evidence level
Preliminary evidence
Typical onset
Varies by prep
Safety rating
Review needed: Safety review pending
Best for
Nitric Oxide Pathways, Urea Cycle
Avoid / review if
Limited Data.

Safety

Safety & Cautions

May lower blood pressure; review with nitrates, PDE5 inhibitors, or hypotension.

Elevated caution

Caution level: Elevated. One caution category applies — read it before use.

  • Interaction-AwareMedication or interaction context is explicitly noted.

Evidence Summary

Profile-wide ·D Preliminary

Evidence lens

Early signal that needs stronger human replication before practical claims.

PreliminaryPreliminary evidence

Human clinical evidence: Present in source signals

Mechanistic / preclinical: Mechanism mapped — Mitochondrial Support · Vascular Function Support · Endothelial Function Support

Research maturity: Preliminary research — Early findings are not treated as established consumer benefit.

Safety boundary: Safety note available — May lower blood pressure; review with nitrates, PDE5 inhibitors, or hypotension.

This profile cites 1 human study.

Evidence Strength

Confidence estimate based on the design quality and consistency of published clinical trials.

Preliminary evidence

Citrulline Malate has a preliminary evidence rating.

PerformanceRecovery
Citation density
0.5
Sources
1
Effects
2
Research recency
Mixed recency
Evidence Grade

Grade D: Preliminary / Theoretical Evidence

Evaluation of methodological rigor, population reach, and evidence alignment.

Design Match
Randomized controlled trial
Risk of Bias
Low
Consistency
Not assessed
Strongest recorded design is a randomized controlled trial, drawn from 2 recorded studies, 2 in people.
How evidence grades work

Each grade reflects the strength and consistency of published human evidence — not marketing claims. Grades are based on study count, design quality, effect size, consistency, and recency.

Strong
Multiple RCTs, consistent direction, adequate effect size
Moderate
Some RCTs or consistent observational data in humans
Preliminary / Mixed
Animal or in-vitro only, or conflicting human data
Traditional / Theoretical
Traditional use only; no controlled human trials
Clinical Study Summaries (1)1 human evidence source · 1 human trial · Participant totals not consistently reported · Consistency not yet classifiable

What the evidence actually shows

This table contains 1 structured source, including 1 human evidence source; 1 is a human trial.

StudyDesignNDoseDurationPopulationOutcomeResult & magnitudeSource

Effects of Acute Citrulline Malate Supplementation on CrossFit(®) Exercise Performance: A Randomized, Double-Blind, Placebo-Controlled, Cross-Over Study

PubMed · Nutrients · 2024

Background
Randomized controlled trial

Randomly assigns participants to interventions or controls, reducing many sources of bias when the trial is conducted well.

——————PubMed →

How Citrulline Malate Works

Simplified mechanism pathway based on preclinical and pharmacological evidence. Does not confirm clinical efficacy.

Mechanism Pathway — How Citrulline Malate Works

How Citrulline Malate WorksCitrulline Malate acts on biological target pathways via mitochondrial (biogenesis), leading to nitric oxide pathways.Citrulline MalateBiological TargetBiological pathwayMitochondrialBiogenesisNitric Oxide PathwaysObservable outcomeVascular FunctionSupport
CompoundTarget / ReceptorMechanismEffect / Outcome

Dosing

Common form
powder or capsule
No standardized dose
Our source data records the usual product form for this ingredient but no studied dose. Preparations differ widely, so follow the standardization on the product you actually have and speak to a clinician before starting.
Mechanisms & biological pathways

Preclinical mechanism details from scientific profiles; these represent plausible pathways but do not guarantee clinical efficacy in humans.

  • Mitochondrial Support
  • Vascular Function Support
  • Endothelial Function Support
  • Endothelial Function

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Related research paths

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Safety first · Harm reduction

This information is educational and not medical advice. Start low, avoid risky combinations, and consult a licensed clinician before making health decisions—especially if you use medications, have diagnosed conditions, or are pregnant/breastfeeding.

Learn how we evaluate confidence, safety, and intensity on the methodology page.

Editorial Review

Checked against primary sources, cited evidence, and contraindication language before publication. Evidence claims, safety language, and affiliate modules are reviewed independently. Not personal medical advice.

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