Kilic, M., et al. Effect of zinc supplementation on hematological parameters in athletes. Biol Trace Elem Res. 2004 Jul;100(1):31-8. This means Nugenix will amplify both the testosterone-boosting properties of ZMA as well as the improvements to your sleep. Purists might not like these additional ingredients, especially because the melatonin means you need to take it soon before bed, but for everyone else, this is an excellent choice. 3. Evlution Z-Matrix

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WebMD reports that there have been no major side effects reported from those using ZMA supplements. If they are being consumed more than the amount recommended, there could be some health concerns. It has been reported that Zinc and Magnesium can make it harder for your body to absorb some prescription medicines and antibiotics. If you already take other supplements that have zinc and magnesium in them, you may want to make sure you aren’t taking way too much of either of those ingredients. The original formulation of ZMA involves 15 mg of vitamin B6, 450 mg of magnesium, and 30 mg of zinc per serving. For most ZMA supplements, that’s three capsules per day.ZMA doesn’t work for everyone. Not all research has found success using ZMA to boost athletic performance. A 2004 study in the Journal of the International Society of Sports Nutrition investigated whether ZMA could improve anabolic hormone levels or performance in one rep max bench press or leg press ( 5 ). This university laboratory tested anabolic formula has been proven to enhance healthy hormone production, leading to an average of 2.5 times greater muscle strength gains in athletes! Swolverine ZMT also has 300mg of ashwagandha, an herb that helps ease stress and anxiety, according to the Cleveland Clinic. This ingredient is also beneficial for recovery, as it can help reduce inflammation and normalize your cortisol levels (also ideal before bed). The study looked at nearly 400 men that were part of a major study in Italy. All of the men had blood samples taken at the beginning of the study, and the authors analyzed the blood sample data to uncover whether any relationship existed between magnesium levels and testosterone.

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For these reasons, it’s widely used by high-level athletes. If you want to boost your testosterone levels and increase your muscular strength or even improve your sleep, you could take advantage of these benefits too. The performance benefits will be so slight relative to your workout intensity that it’s probably better to not take it at all. At Bodybuilding.com, we are dedicated to always offering the best price to our customers. We will match the price on a Price Match Guarantee product if you find the same item at a lower price at a qualifying online retailer. Here's how: We’re proud to be a certified Informed Manufacturer, a global quality assurance program operated by LGC for facilities that manufacture and supply sports nutrition products and ingredients, developed to minimise the risk of banned substance contamination. On qualifying products, Bodybuilding.com will verify the current price to complete the price match.Fewer boxes & transactions:You won’t be billed for this item until it ships with your next Autoship Key Ingredients:25mg vitamin B6, 422mg magnesium, 50mg zinc, 1000mg l-taurine, 500mg l-theanine, 500mg l-tryptophan, 3mg melatonin ZMA appears to be a safe supplement, with no reports of negative side effects and no worrisome ingredients. As with any mineral supplement, if your intake levels are excessive, you could have problems.

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Shankar, A.H., et al. Zinc and immune function: The biological basis of altered resistance to infection. Am J Clin Nutr 68: 447S-463S, 1998. ZMA was made for elite athletes . Initially formulated by nutrition and performance researcher Victor Conte, who later became famous for his involvement in a doping scandal with elite American Sprinters, ZMA was initially used in NCAA football players to improve strength. Currently, there isn’t a ton of research on ZMA supplementation and the products’ effects on athletics but these micronutrients, individually, are crucial to your health. For one, zinc helps keep your immune system and metabolism functioning properly, according to the Mayo Clinic. It’s also a component your body uses during the healing process.Mossad, S. B. Effect of zincum gluconicum nasal gel on the duration and symptom severity of the common cold in otherwise healthy adults. QJM. 2003 Jan;96(1):35-43. Although it’s not totally necessary, it’s recommended to take these pills before bed. Magnesium may help you fall asleep faster and improve your overall sleep quality, according to the Cleveland Clinic. “I’ve been taking magnesium in some form almost every night for a few years, and it always helps me sleep better,” our personal tester says. “I didn’t notice any kind of regression switching to ON brand, so I assume it works great.” Primaforce follows industry standards to a T with their ZMA formulation, and the bottle is more generous than most with regards to the number of capsules included.

Optimum Nutrition ZMA - 90 caps - Bodybuilding and Sports Optimum Nutrition ZMA - 90 caps - Bodybuilding and Sports

As mentioned above, research on ZMA and physical fitness is pretty limited. After giving athletic adult men ZMA supplements, researchers of a small study found no significant advantage in the athletes’ hormone levels, anaerobic capacity, one-rep max bench press, leg press results, or muscular endurance compared to athletes who took no supps. ( 4) As with some omega-3 supps, you may get a little whiff of the fish, according to our testers. “I get a slight seafood/fishy taste and smell when taking these. It’s ignorable, but present.” So, you may want to take these pills with some juice or other flavored drink.

Kilic, M., et al. Effect of fatiguing bicycle exercise on thyroid hormone and testosterone levels in sedentary males supplemented with oral zinc. Neuro Endocrinol Lett. 2007 Oct;28 (5):681-5.