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Optimum Nutrition, ZMA , 180 Capsules

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Optimum Nutrition, ZMA , 180 Capsules

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Optimum Nutrition, ZMA , 180 Capsules

In Stock
  • Expiration Date: August 2019
  • Shipping Weight:
    0.65 lbs
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  • Product Code: OPN-02171
  • UPC Code: 748927021714
  • Package Quantity: 180 Capsules
  • Dimensions:
    5.4 x 3 x 3 in, 0.55 lbs
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Product Rank:

#2 in ZMA >
#76 in Sports >
Frequently Purchased Together
Product Overview


  • Vitamin and Mineral Support
  • Dietary Supplement

The True Strength of ZMA

ZMA is a potent combination of Zinc, magnesium, and Vitamin B6.

Suggested Use

Men: Take 3 capsules before bed.

Women: Take 2 capsules before bed.

Other Ingredients

Gelatin, microcrystalline cellulose, magnesium stearate, magnesium oxide, zinc oxide.


Consult your physician before using this product if you are taking any medications or are under a physician's care for a medical condition. Not for use by those under the age of 18 or women that are pregnant, trying to get pregnant, or nursing.

Store in a cool, dry place.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 3 Capsules
Servings Per Container: 60
  Amount Per Serving % Daily Value*
Vitamin B6 (as pyridoxine HCI) 10.5 mg 525%
Magnesium (as aspartate) 450 mg 113%
Zinc (as aspartate and monomethionine) 30 mg 200%
* Percent Daily Value are based on a 2,000 calorie diet.
iHerb Customer Reviews


Posted by iHerb Customer on March 1 2018 | Verified Purchase


Thanks for your feedback!

First Day...

Posted by iHerb Customer on February 17 2018 | Verified Purchase

I will update this when I have a full week ++ to base the review on, but the first night experience was interesting enough to start of with. Disclaimers: I still have no idea how to take this in the most ideal way. -I dont have 30-60 minutes free to "wait" at any given and I’m stacking a whole pharmacy as well as eating on a tight schedule. - I took the suggested 3 pills not too long after glutamine and approximately 30 min after eating a protein bar. Now. First I spent about 1 hour with the most intense bowel movements ever. No pain, but the amount of gass produced was just out of this world. Secondly, I’ve never had such a deep sleep ever. I could barely wake up. So sleep wise it delivers. Lastly, my muscles are sore as ****. I havent had sore muscles after working out in ages. Not sure whether that is a good or bad thing. I’ll try it for a week and see what happens, while figuring out how to be away with the gass part.

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help sleeping

Posted by iHerb Customer on January 27 2018 | Verified Purchase

Good for sleeping and testosterone booster

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Great value ZMA

Posted by iHerb Customer on December 30 2017 | Verified Purchase

This is a great ZMA - does what it's meant to do unlike other ZMA's on the market.

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Not So Good

Posted by iHerb Customer on December 21 2017 | Verified Purchase

High mg levels may cause diarrhea Its just minerals replacement

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