Optimum Nutrition ZMA, 180 Capsules Review

ON ZMA Review

If you haven’t heard about the hype surrounding ZMA, you’ve been missing out, big time! One supplement manufacturer that has been making waves with their ZMA formula is Optimum Nutrition. But why? What makes Optimum Nutrition ZMA so sought after, and should you be considering this brand to help you increase your anabolic hormone levels and get a better night’s rest?

ON ZMA Nutritional Information

Serving Size: 3 Capsules

Servings Per Container: 60

Cost Per Serving: $0.30

Amount Per Serving

% Daily Value

Vitamin B6 (as pyridoxine HCI)

10.5mg 525%

Magnesium (as Aspartate)

450mg 113%

Zinc (as Aspartate and Monomethionine)

30mg 200%

Other Ingredients

Gelatin, Microcrystalline, Cellulose Magnesium Stearate, Magnesium Oxide, Zinc Oxide 

Performance Ingredients:

  • Zinc
  • Magnesium
  • Vitamin B6

The Highlights

  • Contains a patented blend of Zinc, Magnesium and Vitamin B6
  • Can increased the testosterone levels and muscle strength in athletes
  • Can offer better results when stacked with Creatine, glutamine HMB and other strength & recovery supplements
  • Very affordable
  • Testosterone Booster

The Good

Great Ingredient Profile

Optimum Nutrition’s ZMA consists of 2 main ingredients: Zinc and Magnesium, but it also contains vitamin B6. The two main ingredients come in a much more absorbable form than those you’d find in a multivitamin (a.k.a in the form of “oxide” salts), and it also comes in much more potent doses.

No Bad Tastes

Since Optimum Nutrition ZMA caps are dosed in gelatin capsules, they don’t taste like anything at all. Men are recommended to take 3 caps a day, and women will need to take 2.

It’s Effective

Optimum’s ZMA is great when it comes to reducing recovery time and promoting a restful night’s sleep. Some users have even reported increased libido by taking this sup, which isn’t a bad thing although it’s not a “promoted” effect of Optimum Nutrition’s ZMA. This product is most effective at boosting your energy levels and helping you get a great night’s sleep after a day of solid workouts.

It’s Very Affordable

When you consider that Optimum Nutrition’s ZMA comes at roughly $22 a pop for 180 capsules, it’s virtually a steal. We think this might be one of the cheapest and effective supplements out there.

The Bad

Side Effects

A few users have complained about Optimum Nutrition ZMA caps causing them to have seriously vivid dreams at night, and then there are also the few off reports of “libido related issues” at night.


No Muscle Build

While a lot of folks believe that the testosterone booster will help you build muscle, Optimum Nutrition ZMA capsules will not help you build muscle mass. It will however, help increase your energy levels and sleep better, which in turn should promote better workouts and faster recovery times.

The Verdict

Optimum Nutrition is a company best known for its amazing nutritional supplements, and their ZMA is no exception to the rule. If you’re looking for an affordable ZMA supplement, you just can’t go wrong with Optimum Nutrition ZMA. We scored Optimum Nutrition ZMA capsules a solid 7 out of 10, and would highly recommend it at the drop of a hat!

Additional Reading

ZMA Supplements​