Ingredients: Refined Dextrose, Microcrystalline Cellulose, Niacinamide, L-Glutathione Yeast Extract, Hydroxypropyl methylcellulose, CMC-Ca, Silicon Dioxide, Magnesium Stearate, Mixture(Calcium Carbonate, Modified Starch), Stearic Acid, Glycerin Fatty Acid Ester, Vitamin B2, Vitamin B6 hydrochloride, Vitamin D3 mixture[Arab Gum, Sucrose, Corn Starch, Processed Oil and Fat(Palm Oil), Silicon Dioxide, Vitamin D3, Vitamin E], Vitamin E mixture(dl--tocopheryl acetate, Modified Starch, Glucose Syrup Powder, Silicon Dioxide), Zinc Oxide, Selenium in Dried Yeast
Despite its beneficial roles, excessive production of NO can lead to its reaction with superoxide to form peroxynitrite (ONOO ), a potent oxidizing and nitrating agent [31]
Prevention of acute exacerbations of COPD: American College of Chest Physicians and Canadian Thoracic Society Guideline
And it goes back to something I do want to really clarify for listeners
in humans it is produced naturally by the liver