ZMA
Optimum Nutrition

ZMA

Zinc Monomethionine Aspartate
Support Testosterone Levels And Muscle Strength!*
8.6  out of 10  (401 Reviews)
2 Sizes
90 Capsules
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Price: $12.73  ($0.42 / Serving)
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Product Overview

A synergistic combination of Zinc Monomethionine Aspartate, Magnesium Aspartate, and Vitamin B6 may significantly increase anabolic hormone levels and muscle strength in well-trained athletes.* The novel Zinc Monomethionine Aspartate formula may also help to support endurance, growth and restful sleep.*

Beyond The Basics
  • Contains the PATENTED BLEND of Zinc, Magnesium, and Vitamin B6
  • May Increase Testosterone Levels and Muscle Strength in Well-Trained Athletes*
  • May Offer Even Better Results When Stacked with Creatine, Glutamine, HMB, or Other Strength & Recovery Products*

Behind Optimum with Jennifer Delgado

For NPC Figure competitor Jen Delgado, intense training is everything. Learn why no one should fear lifting weights, how to train for explosive results, and check out Jen's first-rate, fully-loaded supplement stack. It's ON.

Video Length | 3:38

Ratings & Reviews

Overall Rating
8.6
401 Ratings
Verified Buyer Rating
8.8
114 Ratings
By clicking the button above, you agree to entering the Bodybuilding.com Reviews section. Products in the Store are not intended to diagnose, treat, cure, or prevent any disease.
4
Verified Buyer

The first time I took this product was in 2012 and it made a huge difference in my workout recovery time. Unfortunately I think over the years the product quality or effect has declined or due to my body changes maybe it just not works. I don't know. Not everyone has the same effect. It does not work for me anymore. I did read reviews that the product quality had changed but I still went ahead and ordered it and I can say for a fact that it doesn't work on my body anymore. I would not recommend ON ZMA but you're good to go with any other brand as I feel ON ZMA quality has significantly dropped.

10
Verified Buyer

Great product

10
Verified Buyer

Love having this as part of my recovery arsenal. I definitely notice the difference when I forget to take it. ZMA helps me recover by promoting better rest when I'm sleeping. There also seems to be a reduction of muscle soreness from heavy lifting which allows me to power through my next workout without stiffness

9
Verified Buyer

If I'm pretty awake I'll combine this with melatonin and I sleep like a baby through the night ready to attack the gym the next day.

9
 

Been using this for years!!! Love helps your muscles relax when you sleep!!!

7
 

I know the studies on ZMA are kind of hit and miss but from my personal experience I tend to feel better rested when using it and I seem to recover quicker as well. Could be placebo but it does seem to have positive benefits from my experience. (Also the crazy dreams bit is completely legit)

7
 

I didn't notice these help me get to sleep, but they certainly helped me stay asleep. Getting up in the morning after taking these is like trying to rouse a corpse. All of my muscles (even my eyelids) felt weak and stiff for a few minutes, almost like being partially paralyzed. Indeed, I once experienced sleep paralysis while taking these. I may try these again, but this time taking them earlier before bed.

2
Verified Buyer

Another overpraised and non effective ON product. This product is good if you want to have dreams and deep sleep, otherwise stay away as it does not provide any additional results! If you have a busy lifestyle and you sleep for 6 hours max - I would not recommend this product, because you will struggle to get out of bed - it knocks you out in the bed...

10
Verified Buyer

This works well to help me get relaxed and stay asleep at night. Works best if you take it every night at a routine time.

10
Verified Buyer
No written review.
10
Verified Buyer

love this. bought the second bottle already

10
Verified Buyer
No written review.
3
 

I've only used this three nights in a row so far, but my sleep has been way worse? I keep waking up in the middle of the night, and have been getting up an hour or two before my alarm goes off, where I can't fall asleep. I"m going to take a few more times to see if I need to get used to it or something, but currently after using for 3 days I'm a zombie.

10
Verified Buyer

Another excellent product from ON Nutrition- and they do help me sleep better.

10
 

I get very good sleep from this zma. I gave it a while to see if my body would get used to it before it stopped working and it is still pretty effective.

90 Capsules
90 Capsules
30 Servings | $0.42 Per Serving
$12.73
180 Capsules
180 Capsules
60 Servings | $0.37 Per Serving
$22.17

What's in Optimum Nutrition ZMA

90 Capsules
Serving Size 3 Capsules
Servings Per Container 30
Amount Per Serving % Daily Value
Vitamin B6 (as pyrodoxine HCl) 10.5 mg 525%*
Magnesium (as aspartate) 450 mg 113%*
Zinc (as aspartate and monomethionine) 30 mg 200%*
* Percent Daily Values are based on a 2,000 calorie diet
Other Ingredients:
Gelatin, Microcrystalline Cellulose, Magnesium Stearate, Magnesium Oxide, Zinc Oxide

Directions For ZMA: Men: Take 3 capsules, preferably on an empty stomach, before bed.
Women: Take 2 capsules, preferably on an empty stomach, before bed.

Warnings: 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.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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