L Leucine

  • Lactose Free
  • Gluten Free
  • Vegetarian
  • Vegan
  • Taste
  • Mixability
  • Effectiveness
  • Value for Money

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Great prices when buying in Bulk

  • 250g = AU$15
  • 1kg (4x 250g bags) = AU$54 (AU$13.50 each)
  • 1kg = AU$42
  • 4kg (4x 1kg bags) = AU$145 (AU$36.25 each)

L Leucine

L Leucine is largely considered the amino acid responsible for protein synthesis (muscle growth) and can be used directly by the body for energy when under stress.

It can also assist regulating blood sugar levels so can be beneficial when dieting.


Consume 2g (approximately 1 heaped teaspoon) of L Leucine once or twice daily.


Combine powder with liquid and consume immediately.


100% Pharmaceutical Grade L Leucine.

Bulk Nutrients is proudly Australian owned and operated with all products developed, blended and packed locally in our facility in Grove, Tasmania. Find out more




Keep well sealed, protect from moisture, light and heat.

  1. How does it taste? L Leucine is unflavoured and is generally considered to be bitter
  2. What is made from? This product is derived from starches
  3. Are samples available of this product? Sorry we do not provide samples of L Leucine
  4. How is it packaged? L Leucine is packaged in resealable 250g and 1kg pouches
  5. Where is this product made? We blend and package all our products in our own manufacturing facility here in Australia. We source our pharmaceutical grade amino acids from China, as do 99% of all supplement companies. See here for further information
L Leucine Nutrition Information
Servings per 250g package: 125
Servings per 1kg package: 500
Servings size: 2000mg
  Average Quantity Per Serving Average Quantity Per 100g
Energy (kj) 34 1700
Protein (g) 2 100
Fats (g) 0 0
  (saturated) (g) 0 0
Carbohydrates (g) 0 0
  (sugars) (g) 0 0
Sodium (mg) 0 0
L Leucine (mg) 2000 100,000

Formulated Supplementary Sports Food. Not suitable for children under 15 years of age or pregnant women. Should only be used under medical or dietic supervision. This product is not a sole source of nutrition and should be consumed in conjunction with a nutritious diet and appropriate physical training or exercise program.


Write a Review

22 product reviews Hide Reviews Show Reviews

  • 3
    Country or origin

    Posted by Alex Donato on Nov 13, 2018

    Online doesn't state ingredients from China but then most market ready Leucine could be the same. Will give it a try. On freight, 24hrs literally from Tassy to Port Melbourne.

  • 4
    How to manage the taste

    Posted by Allan Rutter on Oct 30, 2018

    For me this tastes terrible.
    Forget mixing it, I found the best way is a little be of water or juice, dump in the teaspoon of L Leucine straight in the month and wash down with water or juice.
    This technique got me from wanting to vomit to no worries at all.

  • 5
    Muscle soreness

    Posted by David on Jun 02, 2018

    Have been using this product now for about 8 weeks and have not had the issue of sore and tight muscles in that time - I train fairly heavy 3 times a week and is has been a joy now not waking up having to stretch saying owwww :)

  • 3
    Taste is Awful!

    Posted by Anon on Mar 13, 2018

    It is too hard to drink, even mixed with sport drink...

  • 5

    Posted by Dave on Mar 02, 2018

    It is what it says. Well priced. Packaging could be better though...

  • 4
    Effectiveness or taste ?

    Posted by Mark on Jan 31, 2018

    I use it 3 times daily, smaller doses and I like it in my morning OJ. It doesn't like to mix well with a spoon in quite a few different liquids, but you certainly know it's working while you are using it. Taste disappears totally in any of BN's protein supps and mixes ok in them. Cheers Mark.

  • 4
    Mixes best in a shaker, too early to see any results yet

    Posted by Matt on Nov 22, 2017

    This mixes well within a shaker, harder to mix with a spoon in a glass,
    I use it multiple times per day, depending on timing of my workouts/eating and I am unsure of results as yet. I do supplement this with my protein, and have noticed less soreness in recent weeks. Once again, hard to say if it is of a direct result

  • 5

    Posted by Jim from the gym on Nov 10, 2017

    I am 64 years old with 45 years of experience in weight training and supplementation. The short message is Leucine works (and I was very skeptical). If you are O/50 it is dose dependent, meaning you will have to find your sweet spot. U/50, varying the dose doesn't make any significant difference . Leucine from Bulk Nutrients is as good as it gets, they are an honest company. Whether you are training or not this is a 'should have'. For O/50's it's a 'no brainer'. Take it both by itself, and in protein shakes. I highly recommend Leucine.

  • 4
    L Leucine works for me.

    Posted by Warren on Jul 26, 2017

    I have found this to work quite well for it's purpose of regulating Blood Sugar levels, but also helps with my appetite. Muscle Growth/Sustaining is great.

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