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• Helps Support Nitric Oxide Synthesis**

NOS from Precision Engineered delivers Arginine, the principal substrate for Nitric Oxide synthesis.** Nitric Oxide plays a pivotal role in many biochemical reactions, helping to maintain healthy circulation and immune system function.** Scientific research documents the ability of supplemental Arginine to assist in the formation of Nitric Oxide, a fundamental molecule involved in a variety of critical physiological functions.**
  • Gluten Free Vege Coated


  • Supplement Facts
  • Serving Size 3 Caplets
  • Servings Per Container 60
  • Amount Per Serving / Percent Daily Value
  • L-Arginine Alpha3,000 mg (3 g) ***
  •    Ketoglutarate Dihydrate
  •      (Providing 1,950 mg of L-Arginine)
  • ***Daily Value not established.

Directions: Adults, take three (3) caplets two to three times daily. Take one serving 45 minutes before exercise and another immediately after exercise or 45 minutes before lunch or dinner.

Other Ingredients: Vegetable Cellulose, Dicalcium Phosphate. Contains <2% of: Vegetable Magnesium Stearate, Vegetable Stearic Acid, Trisodium Citrate.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Not intended for use by persons under the age of 18. Keep out of reach of children. Store at room temperature. Do not use if seal under cap is broken or missing. WARNING: THIS PRODUCT CONTAINS A CHEMICAL KNOWN TO THE STATE OF CALIFORNIA TO CAUSE BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM.


NOS is rated 4.6 out of 5 by 5.
Rated 4 out of 5 by from Money well spent for once Great value! Pill size similar to Animal Nutrition's Beef Aminos. A little bulky but not to bad. Over 1000mg per tablet, which makes it easy to get either measure out a specific amount that you want to take at a time, or the high dose per tab also makes it easy to take in a large dose of L-Arginine, for example an hour before your workout.
Date published: 2017-08-17
Rated 5 out of 5 by from Great performance product Great performance supplement!
Date published: 2017-05-04
Rated 5 out of 5 by from Absolutely Worth The Investment It helps me feel more energized! I notice an immediate difference in my recovery between sets when I am taking my nitric oxide. I can go longer and stronger with NOS
Date published: 2017-04-15
Rated 4 out of 5 by from good product It's good product for the starter and who just do right amount 0f workout or not too much work out.
Date published: 2013-05-24
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