Nitric oxide (NO) boosters are products that contain ingredients that dilate your blood vessels, increase blood flow and enable more efficient nutrient transportation around your body. Nitric oxide is produced in the body from the consumption of various amino acids. Most commonly arginine and citrulline malate are the amino acids used for this in supplement products.
Clinical studies on nitric oxide boosting supplements have found that it increases strength, endurance and lean mass over relatively short periods of time.
Nitric oxide supplements can be taken as a dietary additive where it is being consumed with meals once or twice daily. Also it can be taken as a pre-workout supplement as this is the main time where your body will benefit from the increased blood flow and nutrient transportation.