In recent years athletes have discovered (and the data back it up) that use of nitric oxide supplements helps to boost your endurance and oxygen capacity for hours. The studies behind the science are very clear: when you boost your Nitric Oxide during exercise, blood flow is increased to the muscle at work, resulting in greater endurance and better recovery.

What Is L-citrulline?
L-citrulline consists of a nonessential amino acid that is produced naturally by the body. It is most commonly taken by bodybuilders and athletes to improve exercise endurance.

Grape Seed Extract Benefits †
Grape Seed Extract is rich in antioxidants and power chemicals, such as resveratrol, that help support cardiovascular health and maintain healthy, glowing skin. It also helps promote kidney and liver function, fortifies the joints, and provides support to the brain.

As with all of our supplements, we ask you to not just take our word for it, look at the independent studies, which you will find below.

Nitric oxide (NO) is quite an essential molecule for human metabolism since it plays an active role in body functions. In the past 20 years, nitric oxide has become a milestone in terms of both athlete physiology and pharmacology studies. The most known and remarkable function of NO is its role in controlling vasodilatation, blood rate, and mitochondrial respiration and thus enhance performance. Therefore, it can be argued that exercise and NO have a positive relationship. (Oral O. Nitric oxide and its role in exercise physiology. J Sports Med Phys Fitness. 2021 Sep;61(9):1208-1211. doi: 10.23736/S0022-4707.21.11640-8. Epub 2021 Jan 20. PMID: 33472351.)

Ingestion of a nitric oxide enhancing supplement improves resistance exercise performance. J Strength Cond Res 30 (12): 3520-3524, 2016-Studies have established that supplementation of nitrate increases nitric oxide which in turn improves exercise performance. (Mosher SL, Sparks SA, Williams EL, Bentley DJ, Mc Naughton LR. Ingestion of a Nitric Oxide Enhancing Supplement Improves Resistance Exercise Performance. J Strength Cond Res. 2016 Dec;30(12):3520-3524. doi: 10.1519/JSC.0000000000001437. PMID: 27050244.)

We conclude that the use of CM [Citrulline Malate] might be useful to increase athletic performance in high-intensity anaerobic exercises with short rest times and to relieve postexercise muscle soreness. Thus, athletes undergoing intensive preparation involving a high level of training or in competitive events might profit from CM. (Pérez-Guisado J, Jakeman PM. Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. J Strength Cond Res. 2010 May;24(5):1215-22. doi: 10.1519/JSC.0b013e3181cb28e0. PMID: 20386132.)