Outcome
    Limited

    L-Citrulline for Sexual Arousal

    Citrulline improves nitric oxide availability with modest clinical results for mild erectile difficulty.

    Overview

    Citrulline improves nitric oxide availability with modest clinical results for mild erectile difficulty.

    Verdict

    Insufficient evidence

    How It Works

    Raises plasma arginine, supporting nitric oxide-mediated vasodilation.

    Dosing & Protocol

    Typical dose

    Recommended dose
    1.5-6 g L-citrulline daily (range used in erectile/arousal-adjacent studies)
    Expected timeframe
    Not established for this outcome

    Protocol

    dose
    1.5-6 g/day (studied for ED, not arousal)
    form
    L-citrulline
    timing
    Daily
    duration
    Not established for this outcome

    Evidence

    What the studies say

    A small trial in men with mild erectile dysfunction found improved erection hardness scores versus placebo, but the effect was much smaller than PDE5 inhibitors.

    No studies are yet linked to both L-Citrulline and Sexual Arousal.

    Safety

    Caveats

    INSUFFICIENT evidence for sexual arousal specifically: 1.5-6 g/day improved erection hardness in mild ED in men, but arousal per se (especially in women) lacks trial data — no regimen can be recommended beyond the studied ED dose. Nitrate/PDE5 contraindication applies. Avoid in pregnancy (no data).

    Less likely to help if

    Unknown — outcome under-studied

    Medical Disclaimer

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    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.