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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.

  • NEW NITRAFLEX® PUMP HAS THE POWER TO OUTPUMP!

    This scientifically complex power output formula is designed to create dramatically extended muscle pumps while weight training. Impressive, bigger and longer-lasting NITRAFLEX PUMPS! It’s Stim-Free, and won’t keep you awake after night training. Even those sensitive to stimulants can take it. Plus, it stacks well with other GAT products!

    MASSIVE HYPEREMIA MUSCLE PUMPS:

    Inducing advanced, blood-engorged Hyperemia Muscle Pumps takes precision. The uniquely potent, athletics-enhancing formula in NITRAFLEX PUMP! Its clinically defined dosage matrix of L-Citrulline, Hydromax Glycerol, L-Norvaline, and Pine Bark boosts nitric oxide, dilates blood vessels for higher volume flow racing into muscles fights fatigue. It increases pumps and endurance. Agmatine Sulfate adds Nitric Oxide synthesis, muscle growth, and recovery.

    BEST-IN-CLASS POWER OUTPUT, FOCUS & PERFORMANCE:

    Feel the power of NITRAFLEX PUMP, and crush workouts with seething intensity. You won’t believe it’s stim-free! Carnosyn® Beta-Alanine enhances muscle’s hydrogen (H+) ion buffering. Agmatine increases energy for heightened performance. L-Taurine increases alertness, strengthens the heart and reduces blood pressure. NITRAFLEX PUMP is truly a power-packed pre-workout pump matrix for today’s athletes!