Just like creatine, NO products are widely available from every major sports supplement company out there. Gaspari, BSN, Optimum Nutrition, ABB, MHP, Dymatize, EAS, Muscle Tech…you name it. In fact, may of the sports enhancing products add both creatine and nitric oxide to their formulas for a solid 1-2 punch. The goal is to fill the muscle cell with water and then flood between the cells with blood for ridiculous pumps. As with any of these supplements be sure to read the entire label for ingredients and dosing, read the warnings, understand what you’re taking and make an educated decision as to whether or not it’s for you.
Associated risks/scrutiny: ZMA supplements are usually all-natural and there are no known negative side effects. "However, more than 350 mg of magnesium through supplementation can result in diarrhea," Broschart warns. If you are taking medication for your heart or to treat osteoporosis, you should consult your physician before supplementing with magnesium as there may be a drug/nutrient interaction. Vitamin B6 toxicity, can cause neurological effects, but this only occurs when amounts exceed 100 mg per day. Studies have found that zinc ingestion of about 60 mg per day through diet and supplementation can cause copper deficiency.