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Optimum Nutrition ZMA
  • Optimum Nutrition ZMA
  • Optimum Nutrition ZMA
  • Optimum Nutrition ZMA

Optimum Nutrition ZMA

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Two recent clinical trials have shown that a synergistic combination of Zinc Monomethionine Aspartate, Magnesium Aspartate, and Vitamin B6 can significantly increase anabolic hormone levels and muscle strength in well-trained athletes. The novel Zinc Monomethionine Aspartate formula may also help to increase endurance, healing, growth and restful sleep.

Optimum Nutrition ZMA contains the PATENTED BLEND of Zinc, Magnesium, and Vitamin B6
RESEARCH TESTED and Shown to 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

Category: Vitamins & Supplements

How To Use It

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

Most Recent of 24 Reviews
Lala Land
Review by Sheep(Date 2/12/15)
I can literally set a timer when I fall asleep after taking ZMA. Must be the magnesium in their that helps. Anyways great product for recovery. ON just rocks.
good for recovery
Review by wandi(Date 5/7/13)
ZMA really helps you sleep much much deeper. you wake up feeling refreshed and ready for the gym. thumbs up
Its OK
Review by Mo(Date 1/8/13)
Not bad, but not the best ...
Helps with improving sleep though.

I prefer Supplements SA Testoblast (ZMA Tribulus).
Optimum Nutrition ZMA
Take your fitness goal to the next level.
Free Delivery
for orders over R200.
All Major Centres
Orders over R200
Outlying Areas
Orders over R599
Expected Delivery
date for your parcel.
Johannesburg, Pretoria, Bloemfontein, Durban
Fri 28 October or Mon 31 October
Cape Town, Port Elizabeth, Outlying Areas
Mon 31 October or Tue 01 November
Nutritional Information
Serving Size: 3 Capsules
Servings Per Container: 60
3 Capsules
% DV
Zinc (as monomethionine and aspartate)
30 mg
Magnesium (as aspartate)
450 mg
Vitamin B6 (as pyridoxine HCI)
10.5 mg

Serving Size: 2 Capsules
Servings Per Container: 90
2 Capsules
% DV
Zinc (as monomethionine and aspartate)
20 mg
Magnesium (as aspartate)
300 mg
Vitamin B6 (as pyridoxine HCI)
7 mg
Zinc, Magnesium, Vitamin B6, Rice Powder, Gelatin, Magnesium Stearate
This product is not intended to diagnose, treat, cure or prevent disease.
More Customer Reviews
Above Average
Review by Ray(Date 11/29/11)
This product really makes you sleep deeper, the only thing I found weird was the smell on the inside of the container. Other than that it's a good product. I'll keep using it!
Mixed Review
Review by Shogun(Date 11/22/11)
This product in theory can assist with recovery and strength but I felt more benefit from taking less tablets more spaced apart. Had digestion problems when taking the full dosage continually.

Would recommend taking few tablets to assess tolerance and then planning from there.
Review by Shogun(Date 11/16/11)
Price is decent for what you are getting.Initially started with 3 tablets and had digestion problems. Didn't notice too much in terms of the strength and recovery but I did feel better and felt as though I underwent a detox. Tablets are quite large but are capsules so no real taste. Effectiveness is mixed, 2 or 1 may be the way to go with this product.

Quality product
Review by Woz(Date 10/6/11)
Great ZMA from ON. Cheaper than other big brands but way better. makes you sleep like a baby too!
Review by David(Date 9/22/11)
Deep Sleep
Lowers Body fat %
Price is average compared to others

Although it puts you in a deep sleep, it also has a down side, it takes you over an hour to feel "normal" again...

Review by Shogun(Date 8/15/11)
This product is easy to digest and does not taste like anything. Have found it harder to wake up in the morning but feel more well rested. The zinc also benefits your skin.

In terms of recovery have not seen too much of a benefit. Price vs. quantity is very good. 60 Servings for about R380.

Foresee this product getting better over time.
Good for muscle recovery, but not convinced about deep sleep
Review by Srn(Date 8/1/11)
I've used this product for 1 month and found that the recovery effects were apparent after 1 week. My legs and chest especially benefited, as without the product the muscle soreness lasted ~4 days and since using it the soreness is drastically reduced after 2 days (did not change my legs/chest routines since using it, btw). I was a bit disappointed that I did experience the same 'deep sleep' as everyone else who has reviewed this product claim, but I can let that go since the reduced muscle soreness is what really matters.
Does what it says!
Review by B.B(Date 5/10/11)
This product helped me a lot with my recovery.Without this product I could only go to the gym 3-4 times a week with a good hard 1 - 1.5 hour workouts. Using this I could easily go to the gym 5 days a week without any stiffness or sore muscles.

The bonus with Optimum Nutrition ZMA is the sleep.You sleep much deeper and feel fresh the next morning with only a few hours of sleep behind you. Just take 3 tablets before you go to sleep.

I would definitely recommend this for serious weight lifters.

Overall I give it a 10/10
Review by Christopher (Date 3/30/11)
Sleeping is a bit better, I guess, but the strength gains are definitely noticeable. It's cheap and lasts for a long time! ON never fails.
Great ON Product
Review by Nick(Date 3/23/11)
Essential product to add to anybody trying to build muscle and recover quickly.
Makes you sleep like a baby all night!
Great strength enhancer and overall training product. A definite MUST-HAVE in the supplement drawer for everybody
Love it
Review by Andre(Date 3/15/11)
After i used this product for the first time i will now always use ZMA. You can really feel it and it works. Sleeping got a new meaning after i started taking this.
Acne and nightmares
Review by J-Bay(Date 11/19/10)
I have read a lot of stories about ZMA causing acne. I suffer a lot from acne and in the first two weeks this product has given me a lot of "karbonkels", but it seems like the Zinc has just got rid of all the junk in my blood because the last two to three weeks I haven't had any acne problems especially on my face. If this is the norm I'm definitely gonna stick to this product (touch wood)

And yea...the dream thing is true...I forgot how it felt to dream...until I started using ZMA. I do have the odd nightmare now and again....some of them may win academy awards...if I can just remember them.
Stimulant Killer
Review by Kagiso(Date 10/26/10)
Ever had trouble sleeping because of your pre-workout? ZMA gives me the deepest sleep ever. No matter how many hours I sleep, I wake up feeling rested.

Add it to your stack for great results. Highly recommended. 10/10

@Guinea pig: Big lol at the crime, sorry bud
very good
Review by JacoV(Date 9/8/10)
I have some strength increases since using this product. I can feel my muscles is harder and I do sleep better at night. This gets 10/10 form me.
Knock out!
Review by Guinea pig(Date 6/22/10)
What puts me off this product is that they recommend taking this product on a relatively empty stomach. Unfortunately us gym rats need to eat the whole time and it leaves little place for NOT EATING. Anyways, I decided to abide by the rules and this thing knocked me out six love. I don't battle to sleep so the effects were a little more amplified than most users. Woke up the next morning to find my television stolen along with other electronics. I slept through the whole thing!

Buy a decent alarm system when purchasing this as you'll experience peaceful sleep!!
Review by Paul(Date 6/5/10)
Another one of the basic building blocks of muscle!
Good value for money and top notch quality
Definitely promotes Deep sleep (no dreams)
Review by Alheit(Date 5/5/10)
Been using it for two weeks now, nice deep sleep...and I can feel the difference in the gym!!It’s another quality product from optimum!!Love it
Great Product
Review by JGC(Date 4/30/10)
I felt a bit tired the first few mornings after I started using this product.

However, after using it for a few days I definitely woke up well rested. I also seem to fall asleep quicker at night which always helps.

Bit more expensive than some of the other products out there, but well worth it.
Review by pXius(Date 10/27/09)
sleep a lot better, i don't dream any more = better rest
great sleep
Review by robert(Date 10/26/08)
need all the help i can get to sleep better to help with recovery after training hard. i really wake up rested after using zma.
Deep sleep
Review by Kirsten(Date 10/24/08)
I've been hooked on zma for a year now....never had trouble sleeping but zma just makes me sleep really deep. Even though ON ZMA is more expensive, the quantity of capsules you need to take with the USN ZMA is a lot more so the bottle lasts less long. I also don't enjoy swallowing 4-5 capsules when I can get the same quantity of ingredients with 2 capsules from optimum nurition.
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SKU #: ON02482CF