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Last verified: 17 days ago

Watermelon Powder

Also known as: Citrullus lanatus powder, watermelon extract, watermelon fruit powder

Evidence under review. — Not yet rated

Fruit-derived powder with antioxidant and anti-inflammatory properties. Human evidence is lacking.

  • What it does

    Watermelon powder is a concentrated, dried form of watermelon fruit, rich in the amino acid L-citrulline, lycopene, and other antioxidants. In animal studies, it has been shown to reduce markers...

  • Evidence quality

    Evidence base hasn't been formally rated yet. See research below.

  • Clinical dose

    No established dose

See full breakdown ↓ Methodology →

What the Science Says

Watermelon powder is a concentrated, dried form of watermelon fruit, rich in the amino acid L-citrulline, lycopene, and other antioxidants. In animal studies, it has been shown to reduce markers of inflammation, improve cholesterol profiles, and lower oxidative stress. It may also support nitric oxide production via L-citrulline, which plays a role in blood vessel health — but no human clinical trials have confirmed these effects for the powder form specifically.

What It Doesn't Do

Not proven to build muscle or boost athletic performance in humans. No clinical evidence it lowers cholesterol or blood pressure in people. Don't assume animal study results translate to humans. Not a cancer treatment or prevention tool. The 'detox' claims you'll see on labels have no scientific backing.

Evidence-Based Benefits

Increases antioxidant enzyme activity and reduces oxidative stress markers in animal models.

Weak Evidence

Effective at: No established human dose

Supporting studies (click to view on PubMed):

PMID 25631716

Lowers C-reactive protein and other inflammation markers in rats fed a high-fat diet.

Weak Evidence

Effective at: No established human dose

Supporting studies (click to view on PubMed):

PMID 25631716

Raises nitric oxide levels in animal models, possibly due to its L-citrulline content.

Weak Evidence

Effective at: No established human dose

Supporting studies (click to view on PubMed):

PMID 30207495

Absorption & Bioavailability

Unknown for the powder form specifically. L-citrulline from watermelon is generally considered bioavailable, but absorption from a concentrated powder versus fresh fruit has not been studied in humans.

Red Flags to Watch For

  • All available research is from rat studies — no human clinical trials have been published on watermelon powder
  • Over 1,000 supplement products contain this ingredient despite minimal clinical evidence
  • Doses used in animal studies cannot be directly translated to human dosing recommendations
  • Marketing claims about heart health, cancer prevention, or detox are not supported by human data

Frequently Asked Questions

What does Watermelon Powder do?

Fruit-derived powder with antioxidant and anti-inflammatory properties. Human evidence is lacking.

What is the effective dose of Watermelon Powder?

No established dose

Is Watermelon Powder safe?

All available research is from rat studies — no human clinical trials have been published on watermelon powder

What doesn't Watermelon Powder do?

Not proven to build muscle or boost athletic performance in humans.

Research Sources

  • PMID: 25631716
  • PMID: 30207495
  • General knowledge

This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25