XNO contains Arginine is a semi-essential amino acid that is involved in several areas of human biochemistry including hormone secretion and immune modulation. It is also a precursor to nitric oxide, a key component of endothelial derived relaxing factor, a molecule involved in a variety of physiological effects on the cardiovascular system including vasodilation (relaxation of the blood vessels). Vasodilation increases oxygen and nutrient delivery to muscles and all organs of the body. Prolonged arginine supplementation has also been shown to significantly decrease blood pressure through increased synthesis and bioavailability of nitric oxide.

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XNO (Xyience) - Average rating 5 (1 review)  - Write a review Show Reviews Reviews (1) (0) (0) (0) (0)   4 of 4 people found the following review helpful. June 04, 2009 Reviewer: Suplementos Alim. Rodrigo in Chile Very good supplement. Take 6 caps each day for 30 days (2 bottles) and I gained 5 lbs of pure muscle and vascularity. My weight in the past has been 150 lb, and now my weight is 155 lbs with identical mass of fat.(6%) Was this review helpful to you? Yes  No

271-0006 Xyience XNO - Nitric Oxide Formula 120 capsules Nutrition Facts Serving Size: 4 Capsules Servings Per Container: 30 Amount Per Serving % Daily Value* XNO Blend: (Arginine Alpha-Ketoglutarate, Arginine-Ketoisocaproate) 3,000  mg *%    *Percent Daily Values are based on a 2,000 calorie diet.   Other Ingredients: Gelatin, water. Recommended Use: As a dietary supplement, take 4 capsules twice daily- in the morning on an empty stomach and 30 minutes prior to workout. Although XNO contains no stimulants of any kind, it may keep you awake if taken in the evening. It is recommended you drink at least 8 glasses of water per day. For best results this product should be used in conjunction with a well-balanced diet and exercise program. Warning: KEEP OUT OF REACH OF CHILDREN. Before taking this or any other supplement you should consult your health care provider, especially if you are pregnant, nursing or taking any medications. ALLERGEN STATEMENT: This product is manufactured in a facility that processes milk, eggs, soy, crustaceans, fish, peanuts, tree nuts and wheat. This product may contain traces of nuts. Before beginning any program of weight loss, consult your health care practitioner. These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure or prevent any disease. If you notice any errors in the information above, please let us know. If you have further questions about this product, please contact Xyience at 866-370-8656 The nutrition facts listed above are supplied as a courtesy to our customers. The nutrition facts were current and accurate to the best of our knowledge at the time they were entered. Manufacturers often change formulas or ingredients without notifying us. We do our best to keep them as up to date as possible, however Netrition.com will not be held responsible for any differences between what is listed on our web site and what is listed on the product that you receive. If you need to be 100% certain of the ingredients currently being shipped, we recommend that you call or email our customer service department to check the shelf of current stock.