The ingredient, explained
Understand the nitric oxide connection.
Your body converts L-citrulline into arginine, which it uses to make nitric oxide—a messenger involved in normal blood vessel relaxation.† [1]
Ingredient research explains the science. It is not a clinical test of this finished product.
- L-citrullineThe single amino acid in this powder.
- L-arginineYour body converts citrulline into this amino acid.
- Nitric oxideHelps signal blood vessels to relax.

Why it matters
Why do people use it for training?
Citrulline is popular in “pump” formulas because of its role in the nitric oxide pathway.† The pathway explains the interest; it does not guarantee a noticeable pump or a better workout. [1]
Exercise results are mixed. One small study in trained men found faster cycling after a week of L-citrulline, but that does not establish the same benefit for every customer or workout. [2] See the NIH evidence overview.
Your routine, simplified
One ingredient. Easy to understand.
Unflavored L-citrulline powder, with no added caffeine, flavors or sweeteners. Mix it into water or your favorite beverage without adding another flavored formula.
Supplement Facts
Open the panel to view the ingredient and serving details.
Citrulline — Unflavored
Serving size: 1 level scoop (3 g)
Servings per container: 100
Net weight: 300 g
| Ingredient | Amount per serving |
|---|---|
| L-citrulline | 3,000 mg (3 g) |
* Daily Value (DV) not established.
Other Ingredients: None.

How to Use
Mix 1 level scoop (3 g) into water or your favorite beverage. Stir or shake well. Take once daily, or as directed by a healthcare professional.
Warnings
Warning: Consult a healthcare professional before use if pregnant or nursing, taking medication, or managing a medical condition. Discontinue use if adverse reactions occur.
KEEP OUT OF REACH OF CHILDREN. Store tightly closed in a cool, dry place.
Common questions
A little more clarity.
Will it give me a caffeine boost?
This single-ingredient powder contains no caffeine. L-citrulline’s role is different from the immediate alertness of a stimulant.
Does it guarantee a pump or more strength?
No. The nitric oxide connection is a reason for interest, but evidence for better exercise performance is limited and mixed. A pump is not a reliable measure of training progress. NIH evidence overview.
Can I add it to a pre-workout?
Check the other product’s ingredient panel first—many pre-workouts already contain L-citrulline or citrulline malate. Follow each product’s directions and consider the total across your routine.
How is it different from beta-alanine?
Citrulline is part of the arginine–nitric oxide pathway. Beta-alanine helps your muscles make carnosine. They serve different purposes. Read the NIH explanations, or explore selfevolve Beta-Alanine.
Where can I check shipping and returns?
Read our shipping policy and refund policy for the current terms.
Find your fit
Three ingredients. Different roles.
| Product | Per scoop / servings | Routine focus |
|---|---|---|
| Creatine | 5 g / 60 | Strength training support† |
| Beta-Alanine | 3 g / 100 | Muscle carnosine and high-intensity efforts† |
| Citrulline | 3 g / 100 | The arginine–nitric oxide pathway† |
These ingredients have different purposes. Compare the label and directions for each product; this table is not a recommendation to combine them. Read the NIH evidence overview.
Research & sources
Studies used different participants, amounts and routines. Findings about an ingredient do not establish the results of this finished product. Study amounts are not directions for use.
- Schwedhelm et al. (2008): 20 healthy volunteers; arginine and nitric oxide signaling, not proof of a workout pump.
- Suzuki et al. (2016): 22 trained men taking 2.4 g daily for seven days and before the day-eight cycling test.
- NIH Office of Dietary Supplements: exercise supplement evidence and safety overview.