ZMA
Optimum Nutrition

ZMA

Zinc Monomethionine Aspartate
Support Testosterone Levels And Muscle Strength!*
8.2 out of 10 (409 Reviews)
2 Sizes
90 Capsules
Choose a Size
{{vm.group.name}}
{{group.violatorText}} {{group.name}}
{{group.skus[0].inventory.labelDisplay}}
{{group.salePriceDisplay}}
{{group.strikePriceDisplay}}
Choose a Flavor
{{vm.sku.name}}
{{sku.name}}
Flavor Rating: {{sku.flavorRating | flavorRating}}
{{sku.inventory.labelDisplay}}
{{vm.group.violatorText}}
Competitor Price: {{vm.group.strikePriceDisplay}}
Price: $12.73 ($0.42 / Serving)
Flavor Rating:

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
8.2
409 Ratings
Verified Buyer Rating
8.8
121 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.
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.

9
Verified Buyer

Excellent mineral supplement..I take it as the label recommends..great recovery..I sleep better ..I'm not sure about it being a test booster though...and anything optimum nutrition puts on the market..you know it's gonna work!

10
Verified Buyer
No written review.
9
 

I take 3 capsules before bed every night. I find that since taking the product I sleep far deeper then I have in the past. I was in the military for ten years and suffer from insomnia. I find that when I take this product I wake up far fewer times and I wake up rested in the morning ready to go. I haven't taken the product long enough to see the testosterone benefits associated with ZMA. Currently I'm cutting so mass gains are not the goal. I do however find that my overall workouts have improved and I'm currently getting in the best shape of my life. I can't single this product to this but along with the other supplements I'm taking and the hard work I put it- it's all working and so I don't plan on changing anything with the current supplement regime I have.

10
Verified Buyer

Excellent product, helps you have a deep restful sleep and waking up refreshed, noticed the effect after 3-4 days. منتج ممتاز يساعدك على (المحافظة) على النوم العميق وتقوم بالصباح بكل نشاط، بدأ مفعوله بعد ٣-٤ أيام.

10
Verified Buyer

ZMA definitely helps me sleep better! Takes about a half-hour to kick in and I'm ready to go to bed! Since I started using it, it's also reduced my migraines...probably because of the magnesium. I take magnesium separately as it helped take my migraines away (over time). I haven't had one in about 5 months. I'd assume the magnesium in the ZMA just gives me a little more aid to the reduction of those migraines!

8
Verified Buyer

Definitely allows me to sleep better at night. The first few times I used it, I felt a little lag the next day but after a few days that went away.

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.
Learn more about ZMA.
Check out other Build Muscle Products.