Antioxidant
Watermelon Powder
Also known as: Citrullus lanatus, Watermelon Extract
Watermelon is a natural source of L-citrulline, supporting nitric oxide production, blood flow, and exercise performance.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Blood flow support
- Exercise performance
- Blood pressure support
- Antioxidant
How it works
- L-citrulline converts to arginine
- Increases nitric oxide production
- Supports endothelial function
Dosage
- Typical range
- 500-2000 mg daily
- Timing
- Pre-workout or with meals
- With food
- Optional
- Duration
- Safe for long-term use
- Special populations
- Athletes, cardiovascular support
Forms
- L-citrulline extract· 100/100
- Seed extract· 85/100
- Powder· 80/100
Safety
Common side effects
- Rare GI upset
Products containing Watermelon Powder
Top-scoring supplements in our catalog that list Watermelon Powder on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
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Evidence notes
Good evidence for citrulline content and cardiovascular benefits
Grade B: Some human trials support key claims; further confirmation needed.
Related in Antioxidant
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.