GNC PRO PERFORMANCE® AMP Best-Selling Performance Down to a Science

AMINO ACIDS & BCAA

  • Unflavored
  • Size: 1 lb

    Size: 2 lbs

    GNC Pro Performance® L-Glutamine

    One of the most abundant amino acids found in the skeletal muscles that plays a pivotal role in the nitrogen balance in the body. Prolonged high-intensity exercise has been shown to decrease glutamine levels, which may result in glutamine deficiency. Each serving supplies 5g of L-glutamine.


    It's a key part of my stack.

    — GNC Customer, Los Angeles, CA

    Size: 16oz

    GNC Pro Performance®
    Liquid L-Carnitine

    An amino acid that is found in red meat. Research shows that L-carnitine helps fuel skeletal muscles. Therefore, L-carnitine is very popular with bodybuilders and serious atheletes.


    Love It!

    — GNC Customer, Las Vegas, NV


    STACK WITH: GNC Pro Performance® 100% Whey Protein, CLA 1000 and L-Glutamine 500

  • Fruit Punch
  • Size: 12.32oz

    GNC Pro Performance®
    RapidDrive™ BCAA 5000

    Features our most advanced RapidDrive™ Amino Acid Technology. Includes BCAAs — leucine, isoleucine and valine — that have been pulverized, or "micronized," from large molecules into smaller particles that are easier to absorb and deliver fast fuel for powerful performance. Now you can fully power your muscles to new levels for optimum performance. Each serving supplies 5000mg of pure BCAA and mixes easily in any beverage or sports drink.


    Excellent way to get your BCAA nutrition.

    — GNC Customer, FL

  • Unflavored
  • Size: 10.56oz

  • Fruit Punch
  • Size: 12.68oz

    GNC GNC Pro Performance® RapidDrive™ Glutamine 5000™

    Each serving supplies 5000mg of pure glutamine to replenish glutamine stores that can get depleted with exercise. Glutamine hydrates muscle cells, provides an anti-catabolic effect and supports protein synthesis. Mixes easily in any beverage or sports drink.


    Glutamine 5000 Is By Far The Best Glutamine Product.

    — GNC Customer, Yonkers, NY

  • Fruit Punch
  • Size: 338g

    GNC Pro Performance®
    Ultra Amino Complex

    Supplies purified and ultra-concentrated fast-absorbing BCAAs to help drive muscle protein synthesis plus a high dose of free-form, fast-absorbing essential amino acids for total body results. This formula helps your muscles recover and helps prevent the muscle breakdown that can occur with intense exercise.


    Taste Great. I use this product during my workouts. Mixes great with a shaker bottle. Does not leave any chalkiness at all. Tastes great with plain water (even better with ice) Awesome, awesome, awesome!

    — GNC Customer, Hermitage, PA

  • Berry Fusion
  • Size: 318g

  • Arctic Grape
  • Size: 312g

    GNC Pro Performance®XR Series™ BCAA Advance XR™

    This advanced system delivers 7g BCAAs with anabolic, extended release OT²™ leucine to help combat muscle breakdown, preserve glycogen and support recovery.


    STACK WITH:GNC Pro Performance® Creatine Advance XR™, Protein Advance XR™ and Restore Advance XR™

    Size: 240 softgel capsules

    Size: 120 softgel capsules

    GNC Pro Performance®
    Amino 1000

    Features the full spectrum of amino acids to support protein synthesis and maintain nitrogen balance in the body. Easy-to-swallow softgels.


    Crazy Awesome. I really like this product.

    — GNC Customer, Anaheim, CA

    Size: 60 tablets

    GNC Pro Performance® L-Carnitine

    Perfect for bodybuilders and serious atheletes, L-carnitine is an amino acid found in red meat that helps fuel skeletal muscles. Each tablet contains 500mg of pure L-carnitine.


    Love this, wouldn't replace it!

    — GNC Customer, Tinker AFB, OK

    Size: 60 tablets

    GNC Pro Performance®
    L-Arginine L-Ornithine

    Featuring 1500mg of L-arginine and 1000mg of L-ornithine per serving, these amino acids are popular among bodybuilders, weightlifters and serious athletes. L-arginine supports the removal of ammonia from the body and promotes the production of creatine. L-ornithine provides additional dietary support.


    For the value, you cannot beat GNC's combo L-Arginine / L-Ornithine tablet. I take it daily without fail.

    — GNC Customer, Las Vegas, NV

    Size: 8oz

    GNC Pro Performance®
    L-Glutamine Powder

    Each serving supplies 5g of L-glutamine to replenish glutamine stores that can get depleted with exercise. Glutamine hydrates muscle cells, provides an anti-catabolic effect and supports protein synthesis. This flavorless powder blends easily with any beverage or sports drink.


    Post-workout Staple!

    — GNC Customer, CA

    Size: 180 capsules

    Size: 90 capsules

    GNC Pro Performance® L-Glutamine

    Each serving supplies 1500mg of L-glutamine to replenish glutamine stores that can get depleted with exercise. Glutamine hydrates muscle cells, provides an anti-catabolic effect and supports protein synthesis. Mixes easily in any beverage or sports drink.


    Like the convenience of capsules! GNC L-Glutamine is one of the products I will not go without when lifting weights.

    — GNC Customer, Philadelphia, PA

  • Grape Berry
  • Size: 60 soft chews

    GNC Pro Performance® RapidDrive® Glutamine 2500 Power Chewsl

    Featuring 2500mg micronized glutamine in a convenient soft chew to rapidly replenish glutamine stores that can get depleted with exercise. Glutamine hydrates muscle cells, provides an anti-catabolic effect and supports protein synthesis. Use during and after training or any time of day.


    Convenient and tastes good!

    — GNC Customer, Springfield, OH

  • Tropical Punch
  • Size: 60 chews

    GNC Pro Performance® BCAA Complex Chews

    Convenient chews for providing essential BCAAs while on the go. Leucine, isoleucine and valine are important for stimulating muscle protein synthesis, reducing protein breakdown and preserving muscle glycogen stores.


    STACK WITH:GNC Pro Performance® Creatine Advance XR™ and 100%Whey Protein

    Size: 120 tablets

    GNC Pro Performance®
    Beta-Alanine

    A clinically studied, high-efficiency strength training supplement. Features 3.2g of beta-alanine to boost muscle carnosine levels—which is a key factor for controlling fatigue.


    BEST ON THE MARKET

    — GNC Customer, Atlanta, GA

    Size: 180 tablets

    GNC Pro Performance®
    Amino Burst 3000™

    Features 3000mg of the full spectrum of amino acids including essential and branched-chain amino acids.


    Highly Recommend!

    — GNC Customer, Los Angeles, CA

    Size: 120 capsules

    GNC Pro Performance®
    XR Series™ Restore Advance XR™

    Anabolic PM formula provides D-aspartic acid, melatonin, L-theanine, Mucuna and extended release OT²™ leucine to fuel protein synthesis and muscle function.


    STACK WITH:GNC Pro Performance® Casein Protein, BCAA Advance XR™and HMB