Rule One Citrulline, Unflavored - 198 grams

L-Citrulline, L-Citrulline

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Mix one scoop (3.3g) with 8-12 oz. of any cold beverage or liquid workout supplement. Consume before or during workouts. Combine with a balanced diet and regular exercise. Store this container tightly closed in a cool and dry place. Keep out of reach of children. For use by healthy active adults only. Consult your physician before using this product if you are taking any medication, are under a physician's care for any medical condition, or are under 18 years of age. Not for use by women that are pregnant, trying to get pregnant, or nursing.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: L-citrulline

L-citrulline is an amino acid that helps produce nitric oxide, supporting steady blood flow to muscles during activity. This form is plain unscented L-citrulline powder, designed as a single-ingredient formula for clean supplementation.

This product yields plain L-citrulline without flavourings or fillers, offering a straightforward ingredient profile that lines up with single-ingredient quality standards.

What Does L-citrulline Do?

L-citrulline participates in nitric oxide synthesis, which can help support blood flow to working muscles and improve endurance during exercise. Studies note potential improvements in muscle pumps and training efficiency when used before activity.

In line with common nutritional guidance, this ingredient helps normal physiological processes involved in exercise performance and muscle function.

*This product is not intended to diagnose, treat, cure, or prevent any disease.

Welzo teams up with brands that show real commitment to purity, reliability and scientific rigour. Rule One really shines for its reputation as a clean, single ingredient expert, celebrated for pure L-citrulline and top quality standards. This brand has earned trust in the sector through a razor-focused approach to formulation, matching our emphasis on simple, well-sourced supplements. Our evaluation process includes a thoughtful review by our expert team of doctors, nurses, and nutritionists to ensure it aligns with Welzo’s criteria and consumer safety expectations, while continually referencing our supplement quality standards.
Rule One's focus on purity and a single active ingredient makes it a perfect match for this citrate product, which is meant to be mixed with drinks and used as part of a pre-workout routine.