This is a nitric oxide precursor formula, not nitric oxide itself — that distinction matters. Nitric oxide is a signaling molecule your endothelium produces to relax and widen blood vessels. You cannot swallow it. What you can do is supply the amino acids your body converts into it, which is what these three ingredients are.*

L-Citrulline DL-Malate at 400 mg is the workhorse. Citrulline converts to arginine in the kidneys and raises circulating arginine more reliably than taking arginine directly, because much of oral arginine is broken down in the gut before it reaches the bloodstream. The 350 mg of L-Arginine Hydrochloride and 50 mg of L-Arginine Alpha-Ketoglutarate supply substrate alongside it.*

Wider vessels move more blood, and more blood means more oxygen and nutrients reaching working muscle. That is the mechanism behind what people notice: better endurance during effort, better recovery after it, and support for muscle growth when training is there to drive it.*

Here is what matters for someone over 50: endothelial function declines with age. Blood vessels get stiffer and less responsive, and that shows up as reduced exercise capacity, slower recovery, and eventually as cardiovascular risk. This is the pillar where circulation lives.*

Most of the research on these compounds is in exercise performance rather than long-term vascular health, so take the claims for what they are. It supports the work you are already doing. It does not replace it.

Two capsules daily. Take them before training if you train.

Ingredients: L-Citrulline DL-Malate (400 mg), L-Arginine Hydrochloride (350 mg), L-Arginine Alpha-Ketoglutarate (50 mg), Vegetable Cellulose (Capsule), Brown Rice Flour.

Manufacturer's country: USA

Product amount (oz/lbs/g): 60 capsules / 2.5 oz / 0.15 lbs / 70 g

Gross weight (oz/lbs/g): 3.2 oz / 0.2 lbs / 90 g

Suggested use: As a dietary supplement adults take two (2) capsules daily. For best results, take with 6-8 oz (177-237ml) of water or as directed by healthcare professional.

Warning: Do not exceed recommended dose. Pregnant or nursing mothers, children under the age of 18, and individuals with known medical conditions should consult a physician before using this or any dietary supplement. KEEP OUT OF THE REACH OF CHILDREN. DO NOT USE IF SAFETY SEAL IS DAMAGED OR MISSING. STORE IN A COOL, DRY PLACE.

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.