fb-icon tw-icon yt-icon gplus-icon rss-icon rss-icon


ZMA® is a unique, powerful non-steroid formula that helps support healthy testosterone levels and maintain muscle strength and power. ZMA contains highly bioavailable, patented zinc mono-L-methionine sulfate, zinc aspartate, magnesium aspartate and vitamin B6.


When it comes to building and maintaining muscle mass, your testosterone levels do matter. Making sure that your testosterone levels are in balance is a great way to support your efforts to achieve the level of muscle mass you desire. ZMA® helps support healthy testosterone levels.


Monster Touchdown

Twenty seven college football players participated in a randomized, double-blind, placebo-controlled clinical trial. Results, you ask? This ingredient increased testosterone levels as well as muscle strength. As you might expect, power and torque measurements were also increased for the players using it.

A number of professional athletes such as Green Bay Packers quarterback Aaron Rodgers use it as a part of his supplementing regiment. There are a growing number of athletes, personal trainers and fitness fanatics using it to maintain healthy testosterone levels in support of their muscle building and maintenance goals.


Get on the Right Team

So what is ZMA®, after all? It is a non-steroidal anabolic support formula consisting of highly bioavailable forms of zinc and magnesium. It’s also formulated with vitamin B6, which is a known co-enzyme for many metabolic reactions. There are many imposters out there – look for the ZMA® logo to make sure you are getting the clinically-studied ingredient.


For the Rest of Us

Even if your goal isn’t to be in the NFL, this product may be able to help you. The participants in the clinical study also increased plasma zinc and magnesium levels, which are important to maintaining your performance and for exercise recovery.

ZMA® can be found in the following products: Cellucor, Met-Rx, Muscle Pharm, Now Sports, Swanson Ultra, True Athlete, Twin Lab, AllMax Nutrition and Bodytech.


What is ZMA?

It is a unique, powerful non-steroid formula that helps support healthy testosterone levels and maintain muscle strength and power. It contains highly bioavailable, zinc mono-L-methionine sulfate, zinc aspartate, magnesium aspartate and vitamin B6.

ZMA® is an anabolic support formula containing highly bioavailable, patented zinc mono-L-methionine sulfate (L-OptiZinc®), zinc aspartate, magnesium aspartate and vitamin B6. Randomized, double-blind, placebo-controlled, published research shows that this ingredient supports healthy testosterone levels and maintains muscle strength and power. Testosterone may help support muscle function and physical performance. It is the ingredient of choice for sport performance products.

This ingredient optimizes the absorption and availability of zinc and magnesium to help support muscle strength and power. Clinical research shows that:

  • Supports healthy testosterone levels
  • Supports muscle strength and power

What do this mean? Essentially it helps enhance your current efforts to maintain healthy levels of testosterone and muscle strength.


How it Works

The ingredient helps replenish zinc and magnesium levels in the body. Zinc and magnesium are important parts of enzymatic reactions that may play a part in muscle function and exercise performance. These important minerals are involved in:

  • Supporting healthy anabolic hormone levels
  • Supporting normal muscle function, strength, endurance and exercise performance
  • Supplying antioxidant support


Active Ingredients

There are three important ingredients in ZMA®:

  1. Zinc mono-L-methionine sulfate
  2. Zinc aspartate
  3. Magnesium aspartate


How to Take It

It is suggested that you take it is on an empty stomach 30 to 60 minutes before bedtime. Since calcium interferes with the absorption of zinc and magnesium, it is suggested that it not be take with calcium-containing foods or supplements. If you are interested in supplementing with this, you should speak with your healthcare professional and refer to the manufacturer's suggested use printed on the label.


Tips For Healthy Testosterone Levels

When it comes to maintaining your ideal muscle mass, testosterone plays an important role. These tips for naturally maintaining healthy testosterone levels can be used in conjunction with ZMA® to find the optimal balance for your body.


Maintain a healthy weight

Excess weight causes hormonal imbalances that can impact your testosterone levels. Maintaining a healthy weight is important to finding the hormonal balance you need to retain your lean muscle mass.


Get enough sleep
Testosterone levels naturally dip on days where you are sleep-deprived. Strive for 7-8 hours of sleep per night to help keep your levels of testosterone at healthy levels. Your body also needs time to recover from your exercise routine (particularly if you include weight training) so sleep is especially important in building and maintaining your healthy muscle mass.


Get enough zinc

Zinc is another important element to the regulation of your testosterone levels. You should strive for 11-12 mg of zinc daily through foods such as oysters, red meat and poultry. Nuts, beans and other forms of seafood also contain high levels of zinc that are bioavailable.


Avoid excess sugar

Did you know that excess sugar can actually reduce your testosterone levels? Make sure to consume sugar only in moderation and maintain a healthy diet consisting of whole foods. Remember that foods such as white flour can act like sugar when processed by the body, so try to avoid processed foods like white breads and pastas.



This is a no-brainer, but is a key element to maintaining healthy testosterone levels. Your workouts are central to your fitness and the hormone levels in your body. Make sure you are incorporating some cardio into your weight training routine to help maintain your overall health.

With these tips and a daily ZMA® supplement, you should be well on your way to easily maintaining healthy testosterone levels to support your ideal muscle mass.


Where to buy

ZMA® is a nutritional ingredient available in a wide variety of dietary supplements. Most products can be found at your local health food store; otherwise you can ask for it by name and have it ordered for you.


InterHealth is a role model for ingredient manufacturers. I rely on InterHealth to deliver efficacious ingredients that are scientifically substantiated

Customer Survey

*Results may vary from person to person.

Privacy Policy

Privacy Policy InterHealth Nutraceuticals respects our customers’ privacy. This policy describes our commitment to keeping that information secure. How Information is Collected and Used InterHealth Nutraceuticals, Inc. will never give away information about our users. Information collected is used to deliver the most effective content to our web site visitors. InterHealth collects information in order to gauge page popularity, analyze traffic patterns on our site and guide development of other improvements to our web site. Any e-mails sent to us, which provide personally identifiable information about yourself, will be used exclusively to respond to your inquiry. We will not sell, rent or otherwise disclose that information to third parties. Due to the fact that some of the information you provide may not be encrypted, InterHealth Nutraceuticals cannot guarantee the confidentiality of all the information during transmission. Use of Cookies Cookies are an industry standard means of maintaining security and facilitating user sessions throughout the pages and activities on a website. Temporary cookies are loaded on the user's memory and deleted when the user ends the session. InterHealth Nutraceuticals may collect cookies on this website to capture information about page visits. This information is anonymous and used for internal purposes only. Concerned users can configure their browser to prompt them if a cookie is requested. If they deny accepting the cookie they may not be able access or use all the site functions that would otherwise be available. Use and Retention of Personal Information Examples of “use” of this information that you have given voluntarily are: marketing, informing you of promotions, responding to questions, complying with our legal obligations, or staffing needs. Sharing your Personal Information with Others InterHealth Nutraceuticals will not share or sell your information with any person or entity other than one of its subsidiaries, affiliates and representatives unless we have your permission to do so or in accordance with the terms of this policy. Examples of when we share information are: Independent brokers to whom we have forwarded your information to for follow up where you have expressed an interest; or Third parties will only be provided such information as is necessary in the specific circumstances included in this policy. We will share information with third parties where we are compelled by law to do so. Security of your Personal Information After InterHealth Nutraceuticals has collected your personal information, we use both physical and electronic security methods to retain your information securely. We only allow authorized personnel to access information collected from our website. In connection with any application, request or enquiry you make, some information may be made available to InterHealth Nutraceuticals affiliates some of which will be based in countries that do not have privacy laws. InterHealth Nutraceuticals advocates that people carefully consider what information they share and who they share it with. We recommend that everyone develop good security habits. These include protecting and regularly changing your password, using computer virus protection, logging off when you finish using your computer, and consider the use of file or email encryption programs. Newsletter Subscription to InterHealth’s newsletter is voluntary. By providing your e-mail address, you are agreeing that InterHealth can send you important information about our ingredients, including announcements of new research, events, or news related to our ingredients. If you do not wish to continue receiving these communications or would prefer that we not share your personal information, you can indicate your preference to "opt out" by checking a box at the end of our newsletters. Changes to this Privacy Policy This policy may be updated as industry practices change and develop. Any such posted changes will be effective upon posting. Your continued access to and/or use of this site constitutes your assent to, and acceptance of, this policy and all posted changes. Questions? Thank you for visiting our site. We want to hear from you and know what you think. If you have further questions, need to correct your information, or any other inquiries, please feel free to use our contact form, email us at info@interhealthusa.com at any time.


FDA Disclaimer: 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. Legal Disclaimer InterHealth Nutraceuticals Incorporated ("InterHealth") provides all information on this InterHealthUSA website exclusively under the following Terms and Conditions: 1. The contents of this site, including all product, original and third party information, have not been evaluated by the Food and Drug Administration. The contents of this site are provided "As Is, With All Faults" and InterHealth disclaims all warranties including, but not limited to, merchantability, fitness for a particular purpose, non-infringement and regulatory compliance. The products or product ingredients described in this site are not intended to cure, mitigate, treat or prevent any disease. 2. InterHealth disclaims all responsibility for any loss, injury, claim, liability or damage of any kind resulting from, arising out of, or in any way related to (a) any errors or omissions in this website and its content, including product information, third party content, technical inaccuracies, typographical errors and regulatory compliance, (b) the unavailability of this site or any portions thereof, or (c) your use of any information, products, equipment or software in connection with this site. 3. InterHealth shall not be liable for any direct, indirect, incidental, special or consequential damages of any kind whatsoever (including, without limitation, attorneys' fees and lost profits or savings) in any way due to, resulting from, or arising in connection with this site, including its original and third party content, regardless of any negligence of InterHealth. 4. These terms and conditions shall be governed by and construed in accordance with the laws of the State of California, as they apply to agreements made and solely performed therein. Disputes arising hereunder shall be exclusively subject to the jurisdiction of the courts in the State of California. 5. By accessing or using this website, including any content therein, you agree to the above terms and conditions. If these terms and conditions are not acceptable in full, you must immediately terminate your use of this website.