L-Leucine 99%
L-Leucine 99%
Benefits
- Supports muscle health
- Supports lean muscle mass
- Promotes exercise performance
- Supports muscle recovery
Product specifications
FōLIUS LABS® L-Leucine is a high-purity muscle support supplement containing 99% pharmaceutical-grade L-Leucine for optimal muscle growth and recovery. It is formulated with a clean label, non-GMO, and clinically studied L-Leucine to enhance strength, endurance, and lean muscle development.
Suggested Use
- 2 capsules daily with meals.
Couldn't load pickup availability











Our quality promise.
-
CLEAN LABEL
-
LAB TESTED
-
NON GMO
-
OPTIMIZED PURITY
TRACEABLE, TRANSPARENT, AND TESTED
Clean label formulation

Pharmaceutical grade
Our L-Leucine 99% supplement is offered in a pharmaceutical grade dosage with no excipients, providing 400mg per capsule, carefully calibrated to meet the highest standards of efficacy and safety.
No fillers or binders
We take pride in delivering a 100% clean label L-Leucine supplement, free from excipients, additives, preservatives, allergens, artificial colors, or flavors.
Pre & post testing
Our L-Leucine 99% supplements undergo rigorous testing for both ingredient(s) and finished product in accredited third party labs, ensuring the highest standards of quality and purity. Download our CoA here.
Optimised dosage through R&D
Our L-Leucine supplement is delivered at a standardized 99% purity optimised dosage based on our clinical research and data. To read more about the optimised dosage, visit our research library.
Our sustainability promise
At Fōlius Labs®, we go the extra mile to source our ingredients sustainably and ethically. We use plastic-free, reusable tin and paper packaging with an aluminium seal for freshness. Our supplements, in '00' veggie capsules, are allergen-free and delivered sustainably for an eco-conscious, easy-to-swallow solution.

Better ingredients for better L-Leucine

L-Leucine 99%
FAQs
What is L-Leucine and how does it work in the body?
What are the benefits of taking L-Leucine supplements?
Is FOLIUS LABS® L-Leucine Extract safe for long-term use?
Does this product contain artificial additives?
Are there any side effects?
Is Folius Labs supplements tested for quality and purity?
Yes, our supplements are third-party tested to ensure quality and purity. This external verification ensures that the product meets stringent standards and provides confidence in its safety and efficacy.
Are the capsules made from animal gelatin or any other ingredients?
Folius Labs supplements are gelatin-free and free from excipients, additives, or preservatives. It is made from vegetable (and vegan-friendly) HPMC capsules.
Is the packaging eco-friendly?
Folius Labs is proud to be 100% plastic-free. We use reusable tin and paper packaging with an aluminum seal for freshness, aligning with our sustainability promise.