Nutricost L-Leucine Powder (Unflavored)

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Regular price $27.95


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Leucine is one of only 3 branched chain amino acids (BCAAs) in the human body, and the most important. It’s ability to reduce muscle protein breakdown while promoting muscle protein synthesis is second to none.* This 1 - 2 punch is why people who supplement with leucine experience greater muscle gains than those who do not. L-leucine is so powerful that most BCAA complexes contain as much leucine as the other two BCAAs combined.

Nutricost L-Leucine Powder 

  • 500 Grams of L-Leucine Powder
  • Non-GMO, Vegetarian, and Gluten Free
  • Primary Branched Chain Amino Acid (BCAA)
  • 5 Grams of L-Leucine Per Serving
  • Manufactured In a GMP Compliant, FDA Registered Facility 


    Customer Reviews

    Based on 40 reviews
    maritza Lue

    I'm taking Leucine everyday. It's one of the basic amino acid. It's flavorless so easy to drink after mixing with water

    Sierra Whiskey
    Incredible!!! Amazing!!! Wonderful!!! 😀🏈👍🙃

    You can put this on tacos or in your shoes. A very versatile product. You can possibly add 90 lb to your one legged jumping power clean PR (in 1 month) if you put the powder on kale. Excellent side effects in the our bedroom as well, for both parties. My wife (she is a lady, I am a guy) found a 🦄 and all of us are happy, fit, and jacked as hell. Most importantly we are happy and will gladly buy again.

    Works alright for me

    Leucine will use up other BCAAs when you build muscle, so if you take leucine alone it won't be effective beyond what BCAAs you consume. I've gained a ton of muscle in a year using basic barbell workouts, a rice protein supplement, creatine, and this leucine. Went from benching 115lb to 215lb all natty, just eating right and taking basic supplements, this included. DO NOT LEAVE THIS STUFF IN YOUR BLENDER BOTTLE!1! But seriously, it will reek. I messed up and left some in mine for a couple days, and the stench it left was like rotting corpse. Never experienced that with any other protein, but it took a lot of scrubbing and eventually phoning a buddy who suggested letting baking soda sit in it for a day. Worked and saved my bottle from the recycling bin.

    Definitely got my bang for buck

    Love this stuff. Activates mTOR and makes me really anabolic I swear I've grown a little from it lol. 19 years of age. Just down it with liver and whey protein so you don't get nausea from the Leucine since it won't really use mTOR the correct way. You want as many amino acids as you can get with stuff. I just take it before bed and it makes me hit the hay real fast as well.

    M. Menzies
    It works does as chemical literature describes L-Leucine benefits

    It works does as chemical literature describes L-Leucine benefits I work out harder in fact my muscles want to do more. no jitters, my muscles are retaining firmness. they are developing. I am getting more and more reps in. I can feel the burn and push on . weight lifting and cycling I see longer pushes on difficult tasks. Very pleased with desired / expectant results. why 4 stars?..................... the TASTE is horrible, I mean horrible. you need something strongly flavored to take this with. otherwise you just won't.



    In the unlikely event that you’re not completely satisfied with ANY Nutricost™ product, we don’t want to keep your money. Even though our products are of the utmost quality, no supplement works for everyone. Contact us and we’ll refund 100% of your purchase price (minus S&H).

    Have questions about our products? Want to leave a comment about our service? Simply fill out the form below and one of our customer service representatives will contact you shortly.

    If you wish to speak with a representative of the Company feel free to call (866-438-3694) or send us an email at with any and all questions or concerns related to our products and services


    Our goal is to have your order processed within 1-2 business days depending on production of items ordered, size of order, and availability. Once Shipped, usually takes 3-5 business days for shipment to be received. (International orders may take longer due to customs).We try to get your order shipped as fast as possible while still upholding to our standard of quality.

    Due to certain circumstances out of our control shipping times may vary.



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