DiLeucine Peptide (MuscleTech 185)

Best Natty Muscle Builder 2024?
Dileucine, a dipeptide consisting of two leucine molecules, boosts the metabolic processes that drives muscle growth percent more than free leucine does, according to a randomized control study.

They found that dileucine boosts the metabolic processes that drive muscle growth 42% more than free leucine does.

Leucine has been validated by clinical research as the key regulator of the pathway of muscle protein synthesis – playing a critical role in activating muscle anabolism, and without its presence, this activation just doesn’t occur. Thus, the faster leucine gets absorbed and delivered into the muscles, the faster muscle protein synthesis can turn on the pathways of growth and recovery.  

Normally, after you consume protein, digestion breaks the chemical bonds between the amino acids that make up that protein and the result is shorter strings, including free amino acids and dipeptides (dipeptides are short peptides containing only two amino acids). What’s special about dipeptides is that small intestines absorb dipeptides faster than their single-molecule counterparts for maximized amino acid delivery to the muscle.

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This product is not approved by the TGA and is only suitable for US customers and other approved countries.
How to use


Stimulation of Muscle Protein Synthesis: Leucine is a key activator of the mTOR (mammalian target of rapamycin) pathway, a signaling pathway that plays a central role in regulating muscle protein synthesis. When leucine levels in the blood increase, it signals to the body that there are sufficient amino acids available for protein synthesis, leading to the activation of mTOR and the subsequent increase in muscle protein synthesis.

New Research

  • Supports athletic performance via regulating muscle protein turnover.
  • Supplementation with 2 grams of dileucine while following a resistance training program for 10 weeks in healthy, resistance trained males lead to greater increases in lower body maximal strength when compared to placebo ingestion (Hagele et al., 2024).

Muscle Growth

  • Dileucine boosts the metabolic processes that drive muscle growth 42% more than free leucine does (Paulussen et al., 2021)
  • Ultra stable and highly bioavailable
  • Direct into bloodstream for maximum muscle support.

How to use

DiLeucine Peptide (MuscleTech 185)


2 grams per day is ideal for most athletes



Need to find the right dose for you? Consider coaching.

Dosing strategy:

Best used long term

Ideal for:

Sports performance, muscle growth, natural athletes


All vendors are vetted for quality, to ensure they contain the right active ingredients and ratios. Each vendor provides a Certificate of Analysis ℹ️, to ensure accurate dosing, and a product free of contaminants/heavy metals. Further, when brands we work with have been randomly pulled off the shelf and tested by Labdoor, they have tended to score A+ ℹ️.


Before listing products, we compile a list of available research, to determine if claims match the evidence. Likewise, we scour the the internet to gauge people’s experience with each product. Most of the products listed typically score at least [4.5/5 from reviews]. All the studies we’ve found are listed at the bottom of the page, under citations.


All products listed on the BYB website follow screening before listing, to ensure there’s a history of long-term usage without adverse effects. Many products fall under the FDA’s Generally Recognized as Safe (GRAS) guidelines.

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Medication interactions and allergies

Please consult your healthcare professional before making any changes to your lifestyle or regime.

For further information on contraindications and allergies, please visit the vendors website.

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Dileucine will completely revolutionise the BCAA and sports performance market from 2024 onwards.


Dileucine is an exciting molecule that I have been very excited about for a long time. It's incredible to see this finally hit the market. #natty+

Lucas, BYB founder
DISCLAIMER: This product is not intended to diagnose, treat, cure, or prevent any diseases. These statements have not been evaluated by the Therapeutic Goods Administration (TGA) or Food and Drug Administration (FDA). This product is intended for research purposes only. All product information available on the website is for educational purposes only. Bodily introduction of any kind into humans is done at the person’s own risk, and Boost Your Biology assumes no responsibility for health outcomes, good or bad, that may result from ingestion or use. Use should be supervised by a qualified healthcare professional.


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