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  • In an effort to ensure that our customers receive only top quality and authentic products, we carry stringent quality checks from the time when the products enter our warehouse till the time the products get packed and shipped to you. At Sixteen Inches, we strive to provide 100% authentic products to our customers by maintaining tight quality control during sourcing and distribution of supplements. We also offer 14-day return policy to our customers, in case you are not satisfied with the product quality.
    We invest an enormous amount of time and effort to ensure we source products directly from the brands or their authorized importers. The chances of fake products increase as one moves towards resellers.
    A shocking new study has found many supplements on the market are fake, with researchers determining more than one-third of 44 products tested don’t contain what’s on the label. But one of the nation’s top holistic doctors notes most supplements do not pose a risk and that there are steps consumers can take to protect themselves from bogus products.

  • 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.

    Any reviews or comments on any products are the personal opinions of the users of the products itself and are not evaluated by the manufacturers or Sixteeninches, whatsoever. Results may vary from person to person and are not guaranteed in any case. Sixteeninches.com assumes no liability for inaccuracies or misstatements about products.

  • ZMA

    Intense training may lower levels in your body of vital nutrients and minerals. Many of these minerals you may not be getting enough of without the use of a supplement. MET-Rx® ZMA is a unique mineral support formula containing bioavailable forms of Magnesium and Zinc, including Zinc L-Monomethionine.


    Zinc is an important mineral beneficial for male physiology by supporting reproductive health as well as being involved with carbohydrate, protein, fat and energy metabolism.* It is involved in the synthesis of collagen in bone tissue and is essential for cell division and growth.* Zinc plays a role in over 300 enzymes in the body and forms an important part of the structure of carbonic anhydrase, an enzyme found in red blood cells.* This enzyme serves to accelerate the reaction between a mole of CO2 and water per mole of enzyme to a rate 5,000 times faster than would occur without the enzyme, and therefore plays an important role in carbon dioxide removal from the bloodstream. Zinc also helps with immune function – so make sure you are getting enough of this important mineral every day.