List Price: $35.59
Price: $21.93 ($0.12 / Count) Free Shipping for Prime Members
FREE Shipping
Get free shipping
Free 5-8 business-day shipping within the U.S. when you order $25 of eligible items sold or fulfilled by Amazon.
Or get 4-5 business-day shipping on this item for $5.99. (Prices may vary for AK and HI.)
Learn more about free shipping
on orders over $25—or get FREE Two-Day Shipping with Amazon Prime
You Save: $13.66 (38%)
Price: $20.83 ($0.12 / Count) $21.93 Save $1.10 (5%)
Price: $21.93
In Stock. Ships from and sold by Amazon.com. Gift-wrap available.
In Stock. Ships from and sold by Amazon.com.

2 Sizes: 180 Count
90 Count
Select in
180 Count
Select in



Subscribe & Save:


Cancel anytime. Already a member? Sign in

One-time purchase:

Optimum Nutrition ZMA Nig... has been added to your Cart
Facebook Twitter Pinterest

Optimum Nutrition ZMA Nighttime Muscle Recovery and sleep aid supplement, 180 Capsules

4.3 out of 5 stars 1,288 customer reviews
Why we love this product:
  • Low Return Rate: 29% fewer returns than similar products
  • Highly Rated: More than 80% 4 star and 5 star reviews
  • Popular Item: Popular with customers shopping for "zma"
Amazon's Choice Why we love this product

About the product
  • One bottle containing 180 ZMA capsules with zinc, magnesium, and vitamin B6
  • Clinical trials have shown that ZMA can significantly increase anabolic output and muscle strength in well-trained athletes
  • May also help to increase endurance, muscle healing and growth, and restful sleep
  • Increase muscle strength and helps muscles recover from intense workouts and extreme training
  • Promotes natural deep sleep cycles with less waking episodes

Frequently bought together

  • Optimum Nutrition ZMA Nighttime Muscle Recovery and sleep aid supplement, 180 Capsules
  • +
  • Optimum Nutrition Opti-Men, Mens Daily Multivitamin Supplement with Vitamins C, D, E, B12, 150 Count
  • +
  • Optimum Nutrition Omega 3 Fish Oil, 300MG, Brain Support Supplement, 200 Softgels
Total price: $60.70
Buy the selected items together

Customers also bought

Optimum Nutrition Opti-Men, Mens Daily Multivitamin Supplement with Vitamins C, D, E, B12, 150 Count
$23.98
Added to Cart
Optimum Nutrition Omega 3 Fish Oil, 300MG, Brain Support Supplement, 200 Softgels
$14.79
Added to Cart
Optimum Nutrition Instantized BCAA Branched Chain Essential Amino Acids Capsules, 1000mg, 400 Count
$24.99
Added to Cart
Optimum Nutrition Micronized Creatine Monohydrate Powder, Unflavored, 600g
$15.05
Added to Cart

Customers also bought

Optimum Nutrition Omega 3 Fish Oil, 300MG, Brain Support Supplement, 200 Softgels
$14.79
Added to Cart
Optimum Nutrition Opti-Men, Mens Daily Multivitamin Supplement with Vitamins C, D, E, B12, 150 Count
$23.98
Added to Cart
Optimum Nutrition Tribulus Terrestris 625mg, Testosterone Booster Supplement, 100 Capsules
$10.12
Added to Cart
Optimum Nutrition Instantized BCAA Branched Chain Essential Amino Acids Capsules, 1000mg, 400 Count
$24.99
Added to Cart
Optimum Nutrition Opti-Men, Mens Daily Multivitamin Supplement with Vitamins C, D, E, B12, 240 Count
$36.98
Added to Cart
Optimum Nutrition Vitamin D Soft Gels, 5000 Iu, 200 Count
$10.99
Added to Cart
Added to your Cart


Have a question?

Find answers in product info, Q&As, reviews

Please make sure that you are posting in the form of a question.

Don't see what you're looking for?
There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

From the manufacturer

Product description

Size:180 Count  |  Color:Zma

Product Description

ZMA is the original Zinc-Magnesium dietary supplement developed by SNAC System, Inc. and the only one validated by published research. Patented Zinc Monomethionine Aspartate with Magnesium, and B6 Combination. Optimum Nutrition's ZMA is produced and packaged in our own state-of-the-art, OTC approved manufacturing facility.

Amazon.com

Optimum Nutrition LogoZMA
 


Optimum Nutrition ZMA

Nutrition Information
ZMA
At a Glance:
bulletContains the SNAC System blend of zinc, magnesium, and vitamin B6
bulletResearch-tested and shown to increase testosterone levels and muscle strength in well-trained athletes
bulletMay offer better results when "stacked" with creatine, glutamine, HMB, or other strength and recovery products
 
 
bulletMilligrams of zinc: 30
bulletMilligrams of magnesium: 450
bulletMilligrams of vitamin B6: 10.5
bulletCapsules per day: three
 
ZMA is a potent combination of zinc, magnesium, and vitamin B6 that has been shown to increase muscle strength, size, and recovery when used in conjunction with intense weight training. Optimum Nutrition's ZMA may help you sleep better too, both thanks to its blend of active ingredients and because of the peace of mind you gain from knowing that ON uses only SNAC System, Inc. ZMA, the zinc-magnesium formula supported by published research.

Quality Counts: GMP Certified Products
Optimum Nutrition's commitment to quality is evident throughout the entire product development process. As a continued measure of quality, all vendors must provide a Certificate of Analysis for each raw material supplied. The certified analyses are also verified through random in-house and independent laboratory testing. To further diminish any chance of physical, chemical, and microbiological contaminants, ON has established and implemented a Hazard Analysis Critical Control Point (HACCP) program. Quality assurance professionals make routine checks on all storage, blending, and production areas and conduct daily inspections.


Optimum Nutrition: True StrengthAbout Optimum Nutrition: True Strength
Since 1986, Optimum Nutrition has been supporting the nutrition goals of elite athletes around the world. Building on a foundation of company owned and operated production facilities, unparalleled manufacturing expertise, and uncompromising quality standards, ON continually strives to bring athletes and active individuals sports nutrition solutions designed to make a real difference in performance. Whether your goals involve strength, speed, power, endurance - or any combination - you can count on ON supplements to work as hard as you do. Realize your True Strength with the quality and innovation leader.

What's in the Box
Optimum Nutrition ZMA, 180 capsules.



Product details

Size: 180 Count | Color: Zma
  • Product Dimensions: 3 x 3 x 5.4 inches ; 8.2 ounces
  • Shipping Weight: 9 ounces (View shipping rates and policies)
  • ASIN: B000GIQS02
  • UPC: 616312819249 798746504325 651770226390 748927024821 885260286834 748927021714
  • Item model number: ON91
  • Average Customer Review: 4.3 out of 5 stars 1,288 customer reviews
  • Amazon Best Sellers Rank: #277 in Health & Household (See Top 100 in Health & Household)
  • Would you like to tell us about a lower price?


Important information

Safety Warning
Keep out of reach of children.

Ingredients
ZMA, Gelatin, Microncrystalline Cellulose, Magnesium Stearate.

Directions
Suggested Use: As a dietary supplement take 2-3 capsules daily, preferably on an empty stomach 30-60 minutes before bedtime, or use as directed by a physician or licensed nutritionist. For best results, men should use 3 capsules daily. The recommended dosage for women is 2 capsules per day. Avoid taking with dairy or other calcium-containing foods or supplements. Store in a cool, dry place.

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

Actual product packaging and materials may contain more and different information than what is shown on our website. We recommend that you do not rely solely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. Please see our full disclaimer below.

Compare with similar items


Optimum Nutrition ZMA Nighttime Muscle Recovery and sleep aid supplement, 180 Capsules
PrimaForce ZMA Supplement, 180 Capsules – Increases Muscular Strength and Power / Increases Free Testosterone Levels
NOW Sports ZMA,90 Capsules
JYM Supplement Science, ZMA JYM, Zinc and Magnesium Supplement, 90 Vegetarian Capsules
MET-Rx® ZMA, 90 count
Evlution Nutrition Z Matrix Nighttime Recovery and Sleep Support (30 Serving)
Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart
Customer Rating 4 out of 5 stars (1288) 4 out of 5 stars (149) 4 out of 5 stars (710) 4 out of 5 stars (36) 4 out of 5 stars (1633) 4 out of 5 stars (267)
Price $21.93 $16.84 $12.05 $15.78 $10.50 $16.99
Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping FREE Shipping
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com Evlution Nutrition
Directions Men: Take 3 capsules, preferably on an empty stomach, before bed. Women: Take 2 capsules, preferably on an empty stomach, before bed. As a dietary supplement take 3 vegetarian capsules daily for men and 2 vegetarian capsules daily for women, preferably on an empty stomach, 30-60 minutes prior to bedtime. For best results, avoid taking with foods or supplements containing calcium. As a dietary supplement, men take 3 capsules (women take 2 capsules) daily, preferably on an empty stomach, 30-60 minutes before bedtime. For best results, avoid taking with dairy or other calcium containing foods or supplements. Consider taking this product in combination with NOW® D-Flame™, Celadrin® and TestoJack 100™. For adults, take three (3) capsules daily, preferably with a meal. For best results, avoid taking with dairy or other calcium-containing foods or supplements. As a reminder, discuss the supplements and medications you take with your health care providers. As a dietary supplement take 4 capsules on an empty stomach 30-60 minutes before bedtime.
Size 180 Count 180.00 1 pack (90 Count) 30 servings 90 Count 30 Serving
Size Map 180 Capsules One size 90 Capsules 90 Capsules 120 Capsules
Special Size 180 Capsules 180 Capsules 90 Capsules 90 Capsules 120 capsules

Customer Questions & Answers

Customer Reviews

Read reviews that mention

Top customer reviews

November 24, 2015
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 535 people found this helpful. Was this review helpful to you? Report abuse
August 25, 2015
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 393 people found this helpful. Was this review helpful to you? Report abuse
December 18, 2016
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 22 people found this helpful. Was this review helpful to you? Report abuse
March 5, 2018
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 11 people found this helpful. Was this review helpful to you? Report abuse
January 8, 2018
Size: 90 Count|Color: Zma|Verified Purchase
Comment| 7 people found this helpful. Was this review helpful to you? Report abuse
November 30, 2017
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 9 people found this helpful. Was this review helpful to you? Report abuse
January 16, 2018
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 5 people found this helpful. Was this review helpful to you? Report abuse
March 30, 2018
Size: 180 Count|Color: Zma|Verified Purchase
Comment| 2 people found this helpful. Was this review helpful to you? Report abuse

Most recent customer reviews

Set up an Amazon Giveaway

Optimum Nutrition ZMA Nighttime Muscle Recovery and sleep aid supplement, 180 Capsules
Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more about Amazon Giveaway
This item: Optimum Nutrition ZMA Nighttime Muscle Recovery and sleep aid supplement, 180 Capsules

Disclaimer: While we work to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our Web site. We recommend that you do not solely rely on the information presented and that you always read labels, warnings, and directions before using or consuming a product. For additional information about a product, please contact the manufacturer. Content on this site is for reference purposes and is not intended to substitute for advice given by a physician, pharmacist, or other licensed health-care professional. You should not use this information as self-diagnosis or for treating a health problem or disease. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements regarding dietary supplements have not been evaluated by the Food and Drug Administration and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Amazon.com assumes no liability for inaccuracies or misstatements about products.