Citrulline
A few extra reps. No endurance benefit.
Grade B: Some human proof
Small, early or mixed results in people.
The grade is for the use people talk about, not for every use. Filed under: Gym supplements.
How it works
An amino acid the body turns into arginine, which helps widen blood vessels.
How it was given in studies
By mouth. In the trials people swallowed it as a capsule, tablet, powder or drink.
This is what the studies did. It is not a how-to.
What studies saw
A review of 8 trials in 137 people found about 3 more reps to failure than placebo. A review of 9 endurance studies found no benefit.
The trade-off
Small trials. Pooled data showed no effect on maximal strength.
When it showed up, in studies
Trial designs varied. No clear timeline.
Sources
Put this grade on your site
Copy the line below. The badge links back to this page, so readers can check the sources. It grades the compound in studies. It does not rate any product or seller.
<a href="https://www.workedinrats.com/compounds/citrulline"><img src="https://www.workedinrats.com/badge/citrulline.svg" alt="Citrulline: grade B, some human proof. Worked in Rats" width="300" height="72"></a>
Keep going
We show what studies found. We never tell you what to take. Doses vary by study. Check the sources and talk to a doctor.