Muscletech Amino Build 400G Strawberry Watermelon

Amino Acid Complex (61%) (L-leucine, L-isoleucine, L-valine, Taurine), Acids (Citric Acid, Malic Acid), Refresh Blend (10%) (Sodium Citrate, Watermelon Juice Powder [Citrullus vulgaris, fruit], Coconut Water Powder [Cocos nucifera, fruit]), Maltodextrin, Anti-Caking Agent (Silicon Dioxide), Sweeteners (Acesulfame K, Sucralose), Magnesium Hydroxide, Flavouring, Zinc Gluconate, Colour (Carotenes), Emulsifier (Lecithins), Sodium Chloride.

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched next working day).

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Leucine

Leucine is an essential amino acid and a core part of branched-chain amino acids used to support muscle metabolism. It sits in dietary protein and is used by your body to support normal muscle function during and after workouts. This form is typically provided as part of a BCAA blend and is linked to its role in supporting muscle processes when teamed with other amino acids and hydration ingredients.

What Does Leucine Do?

Leucine helps kickstart the mTOR pathway, which is central to muscle growth after resistance training, helping normal muscle maintenance and adaptation. This mechanism aligns with guidance from researchers at JISSN and partner universities. As part of a balanced intake, leucine teams up with other nutrients to support overall protein synthesis and recovery processes after training. This product is not intended to diagnose, treat, cure, or prevent any disease.

Muscletech is our chosen supplier for Amino Build because their commitment to rigorous quality standards and full label transparency aligns with Welzo’s holding of high manufacturing benchmarks. The brand’s emphasis on evidence-based formulation and leading sports nutrition expertise underpins a trustworthy partnership that supports reliable product outcomes. This selection rests on our evaluation framework, where our expert team assesses brand credibility, ongoing quality control, and the robustness of their manufacturing philosophy. You can learn more about how we verify and certify products through our quality certification process and meet our medical team through our expert team of doctors, nurses, and nutritionists.

Brand credibility and heritage matter to us. Muscletech’s emphasis on transparent formulation and supported ingredient dosages mirrors Welzo’s standards, ensuring the product remains consistent with what you expect from a top-tier sports nutrition partner. This combination is particularly well suited for Amino Build, which combines BCAAs, electrolytes, and hydration elements with clearly disclosed ingredients. The result is a product that fits our criteria for quality, traceability, and performance support in a single, trusted brand collaboration.

Choosing Muscletech Amino Build meets our needs by offering a transparent label and a blend designed for workout support while staying within our positive, science-led ethos. This product exemplifies how Welzo evaluates brands and pairs them with the right formulations to deliver confidence at every step of the customer journey.