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100% Pure L-Leucine Powder
$23.96
RRP $29.95
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Description
Switch Nutrition L-Leucine is a pure branched-chain amino acid (BCAA) supplement designed to support muscle protein synthesis and recovery. Leucine is a key amino acid involved in muscle repair and is commonly used by athletes and fitness enthusiasts to maintain lean muscle mass and support training performance.
Product Strengths
- 100% pure L-Leucine unflavoured powder
- 1000mg per serving
- 200 servings per container
- Vegan-friendly
- Supports muscle protein synthesis (MPS)
- No artificial colours, flavours or additives
Ingredients
100% Pure L-Leucine (L-2-Amino-4-methylpentanoic acid). Per serving (1g): L-Leucine 1000mg.
Allergens
Always review label for full list of ingredients.
Suggested Use
Mix 1 scoop (1g) with water or your preferred beverage. Use before or during training, or between meals to support recovery. Adjust dosage according to your specific training intensity and needs.
Storage
Store in a cool, dry place away from direct sunlight.
Always read the label and follow the directions for use. This product is not recommended for children under 15 years. Not recommended for pregnant or lactating women. This product is manufactured in a facility that processes wheat, tree nuts, seeds, dairy, soy, corn, and fish.
ingredients
suggested dose
Leucine
What is leucine?
Leucine is one of the three BCAAs, sold as a single amino acid or mixed with isoleucine and valine in a BCAA blend. It's also in the protein you already eat, like meat, eggs and dairy, and in every protein powder. So you can choose one amino acid, all three, or whole protein.
Christina HanleyBHSc (Nutritional Medicine), Digital Experience & Content Manager
Checked this page September 2026
See what we checked
Is Leucine right for you?
Common questions
Is leucine the same as BCAA?
Not quite. BCAA stands for branched-chain amino acids, and there are three of them: leucine, isoleucine and valine. Leucine is one of the three. A leucine product gives you just that one, while a BCAA blend gives you all three, so check the label to see which you're buying.
Is leucine in food?
Yes. It's an essential amino acid, found naturally in protein-rich foods like meat, eggs and dairy, and in protein powders. A leucine supplement is the same amino acid, just sold on its own rather than as part of a whole protein.
The evidence, and its limits
The Australian rules
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Always read the label and follow the directions for use. General information only, and not a substitute for advice from your doctor or one of our naturopaths.