7 Day Customer Support
  • Live Chat
  • 1-800-537-9910
USD
Optimum ZMA

Optimum Nutrition ZMA

An Product
May Increase Muscle Strength in Well-Trained Athletes!*
  • Patented blend of zinc, magnesium, & vitamin B6
  • Available in 90 and 180 capsule sizes
  • Stack with other strength & recovery products
  • Designed to enhance testosterone production
Muscle & Strength Rewards

Earn 2 points for every dollar you spend at Muscle & Strength! Spend your points on order discounts, fitness gear and exclusive products.

2 Free Samples

Try before you buy! You can choose 2 free samples with every order you place at Muscle & Strength.

Same Day Shipping

We ship fast! USA orders placed before 6pm EST will be shipped the same day.

International orders placed before 4pm EST will be shipped the same day.

60 Day Guarantee

Not happy with your purchase? No problem. Simply return it to us within 60 days and we'll replace it, credit your account, or give you a full refund.

Contact Us

If you have any questions about products please call us on 1-800-537-9910 or email support@muscleandstrength.com

Deals
LIMITED TIME PRICE CUT
LIMITED TIME PRICE CUT
Buy 1 ON ZMA 180ct for only $26.99! Limited time only.
Buy 2 for $28
Buy 2 for $28
Buy 2 ON ZMA 90ct for only $28! Limited time only.
Buying Options
$15.99 15.9900
90 Capsules
30 Servings | $0.53 Per Serving
Buy 2 for $28
+
$34.99
$26.99 26.9900
180 Capsules
60 Servings | $0.45 Per Serving
LIMITED TIME PRICE CUT
+
 
Nutrition Info

90 Capsules

Serving Size: 3 Capsules For Men (2 Capsules For Women)
Servings Per Container: 30 For Men (45 For Women)
Amount Per Serving
Amt
%DV
For Men
Zinc(as Monomethionine And Aspartate)
30mg
200%
Magnesium(as Aspartate)
450mg
113%
Vitamin B6(as Pyridoxine HCL)
10.5mg
525%
For Women
Zinc(as Monomethionine And Aspartate)
20mg
133%
Magnesium(as Aspartate)
300mg
75%
Vitamin B6(as Pyridoxine HCL)
7mg
350%
* % Daily Value is based on a 2,000 calorie diet. Your daily values may be higher or lower based on your calorie needs.
† Daily Value (DV) not established.
Ingredients
Other Ingredients: Gelatin, Microcrystalline Cellulose, Magnesium Stearate

Suggested use: Men: Take 3 capsules, preferably on an empty stomach, before bed.

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

Keep out of reach of children. Check with a qualified healthcare professional before using this product if you are pregnant, nursing a baby, under 18 years of age, or if you have any known or suspected medical condition(s) and/or are taking any prescription or OTC medication(s).

Directions
Warnings
Expand Info
Product Information

Optimum Nutrition ZMA

Beyond The Basics: Optimum ZMA Product Highlights:

  • Contains the patented blend of Zinc, Magnesium, and Vitamin B6
  • May support Increases in 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*
  • Available in 90 and 180 capsule sizes

University laboratory tests suggest that this formula enhances healthy testosterone production, leading to greater muscle strength gains in athletes!*

Two recent clinical trials have suggested that 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 increase endurance, healing, growth and restful sleep.*

Reviews
Overall Rating
4.7 out of 5 stars
Reviews (299)
Verified Buyers (296)
Review Graph
  • 5 star
    80%

  • 4 star
    15%

  • 3 star
    3%

  • 2 star
    1%

  • 1 star
    1%

Overall Rating
    Show More +
    Show Less -
User Image
Jose
Build Muscle
Feel like I recover faster and sleep is a deeper rest. Problem is trying to take it on an empty stomach before bed because I don't go to sleep hungry.*
Was this helpful?
You found this not helpful
3 of 3 found this helpful
2012-04-15 13:02:27Z
Overall Rating
    Show More +
    Show Less -
User Image
Alex
Build Muscle
Verified Buyer
I got this product because I wanted to sleep better. It has helped me not roll around as much and I feel like I had a better sleep when I wake up in the morning!*
Was this helpful?
You found this not helpful
1 of 1 found this helpful
2010-12-25 05:45:40Z
Overall Rating
    Show More +
    Show Less -
User Image
mike p
Build Muscle
Verified Buyer
Helps recovery and provides a calming restful sleep*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-08-13 11:25:26Z
Overall Rating
    Show More +
    Show Less -
User Image
Thomas G
Verified Buyer
Awesome, have felt a decent difference regarding my sleep and how it helps digest my meal before bed*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-08-07 02:52:09Z
Overall Rating
    Show More +
    Show Less -
User Image
Donald B
Verified Buyer
I just started using this product and it seems to be okay I'll let you know more as I get into it*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-25 16:00:37Z
Overall Rating
    Show More +
    Show Less -
User Image
brandon c
Verified Buyer
Very good product. Good flavor.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-24 15:53:20Z
Overall Rating
    Show More +
    Show Less -
User Image
Kristian D
Verified Buyer
Nice sleep aid and test booster.*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-14 18:32:35Z
Overall Rating
    Show More +
    Show Less -
User Image
Rajeef kandi
Verified Buyer
Good to improve you sleep. Good to recovery*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-10 03:55:04Z
Overall Rating
    Show More +
    Show Less -
User Image
Rajeef kandi
Verified Buyer
Zinc and Magnesium are super important for metabolism as a whole!*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-10 02:28:59Z
Overall Rating
    Show More +
    Show Less -
User Image
Eddy7
Verified Buyer
I cant really feel the difference when taking this product. Been taking it quite a few weeks with no change unlikd the previous brand product i took before which i feel sleeppy within 20mins*
Was this helpful?
You found this not helpful
0 of 0 found this helpful
2020-07-10 00:41:49Z
* Muscle & Strength does not imply any medical claims from this review. There are no guarantees of specific results and results may vary.
* 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.