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Product Overview

Because athletes and active adults may have greater nutrient needs than inactive people, ON's ZMA provides more than ample amounts of Zinc, Magnesium and Vitamin B6.

Food supplement containing zinc, magnesium and vitamin B6. Not recommended for children or pregnant women. Food supplements are not to be used as a substitute for a varied diet. Do not exceed recommended daily dose. Keep out of reach of children. To be used in the framework of a varied and balanced diet and a healthy lifestyle.

Nutritional Information

Nutritional information will be shown when a flavour and/or size is selected.

Customer Reviews

Overall Rating (4.7)
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Sleep is very important

Review by Silas Barnaby on Aug 5, 2021
My primary interest in ZMA was for sleep. This is the only brand of ZMA we have ever used it. My wife and I both agree that this is a great product. I use only on training days,, which is usually 5 days weekly. Helps me relax, especially if reading before sleep. Helps me STAY asleep, which can be a minor problem over age 50.

Helpful for muscle recovery

Review by Anonymous on Jul 31, 2021
I've been taking ZMA for a few months and it has been helpful with nighttime muscle recovery. The vivid dreams are a plus, as well!


Review by Gabriel Romero on Jul 21, 2021
Highly suggest ZMA for micronutrient intake. I don't have daily intake of my micronutrients and ever since I bought these...I have felt it's affected my diet/body. Either way...You can't go wrong with Magnesium/Zinc/B6

Underrated product for health and sleep!

Review by Fabio on Jun 25, 2021
Enzymes in the body that contains Zinc participates in macronutrient metabolism and cell replication. Zinc is also lost in sweat. Magnesium serves as a physiological regulator in neuromuscular, cardiovascular, immune, and hormonal functions. ZMA is a great combination with the proven quality of Optimum Nutrition. Great product to aid on overall health and sleep quality.


Review by Kevin on Jun 22, 2021
Really good product. It helps me a lot!

It Works

Review by Michael Rodriguez on Jun 19, 2021
Haven't dreamt in a long time until I started taking these. Good for your immune system as well.

seal pup

Review by C. Smith on Jun 18, 2021
Five Star service. Customer service personnel friendly and knowledgeable about the products. Look forward to doing business in the future.


Review by Michael Wiltshire on May 10, 2021
My joints felt better in less than 24 hours.


Review by Jelle on Mar 19, 2020
Prima ondersteunend product in de juiste samenstelling, aanrader voor sporters die dagelijks trainen, het bevordert o.a. spier herstel.
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Review by Michael on Jan 5, 2020
Goede zink / magnesium verhouding in vergelijking met andere producten.
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