Reflex Nutrition Growth Matrix is a post training recovery supplement aimed at fuelling quick muscle repair and growth after workouts. Core active ingredients include hydrolysed whey protein powder and leucine, teamed with creatine and glucose polymers to back recovery after training. Reflex Nutrition has built its standing since 1996 on quality, science led formulations and transparent practices.

Available Sizes & Variants:

1890 grams Growth Matrix - Rich Chocolate flavour

Benefits & Features:

• Fast post workout recovery supports quicker muscle repair.
• Hydrolysed whey protein powder delivers rapid amino acids to the muscles.
• Leucine at a substantial 7,000 mg per serving helps switch on muscle protein synthesis so you can push harder in the next session without slowing you down, supporting your body building goals.
• Creatine helps replenish ATP stores, supporting stronger power output and better recovery after workouts.
• Designed for daily post workout use, this blend supports consistency in training progress and steady energy for the next session.

Reflex Nutrition is a UK based company with a proud history of science led performance supplements since 1996. Growth Matrix is manufactured under ISO 9001 quality management, uses Creapure creatine monohydrate, and is subjected to independent tests to confirm absence of doping substances. The brand also leans on sustainability, powered by 100% green energy and recyclable packaging. These commitments create a trusted option for serious body building athletes.

Energy, Fat, of which saturates, Carbohydrate, of which sugars, Protein, Salt, Vitamin B6, L-Leucine (Free Form), Creatine monohydrate (Creapure), Energy, Fat, of which saturates, Carbohydrate, of which sugars, Protein, Salt, Vitamin B6, L-Leucine (Free Form), Creatine monohydrate (Creapure)

• GTIN: 5033579011899
• Manufacturer: Reflex Nutrition
• Categories: Best SellersOur Biggest Black Friday Sale!Protein Powders, Shakes & SupplementsReflex NutritionSports Supplements Black Friday Sale
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the 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 30 days in the same original and unopened packaging. Subject to T&C's.

Mix 105 g (approximately three level 60 ml measures) with 450 ml of water or skimmed milk in a shaker or blender and consume immediately after training. Store in a cool, dry place away from direct sunlight. This product is a food supplement and should be used in conjunction with food as part of a healthy and varied diet, not as a substitute for such. Recommended consumption is one 105 g serving per day. Do not exceed the stated recommended daily dose. This product is not intended for use by persons under the age of 16. Keep out of reach of young children.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

Whey protein, especially in hydrolysed form, is a quick-absorbing source of amino acids pulled from dairy. It helps post-workout recovery by delivering peptides and amino acids rapidly after training to help the body rebuild and adapt.

This formula features hydrolysed whey as the main protein source and is paired with other ingredients that support fast amino acid delivery and muscle repair processes, including naturally occurring leucine and other amino acids that contribute to protein utilisation.

What Does Whey Protein Do?

Whey protein helps raise circulating amino acids after ingestion, which supports normal muscle repair and growth processes after exercise.

It aids the body’s normal metabolic response to exercise by providing essential amino acids that support protein synthesis and recovery in line with general nutritional guidance.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Reflex Nutrition is our chosen partner for Growth Matrix because this brand has a long-standing reputation in the UK performance supplements sector, founded in 1996 and recognised for research-driven, athlete-focused products. Reflex Nutrition is our trusted partner for Growth Matrix because this brand has a well established reputation in the UK sports nutrition scene, started in 1996 and recognised for research led, athlete focused products. This brand stands out in its commitment to quality and sustainability, with production powered by 100% green energy and recyclable packaging, which resonates with our values at Welzo. This brand shines for its commitment to quality and sustainability, with production powered by 100% renewable energy and recyclable packaging, which resonates with our values at Welzo. This brand was evaluated by our team of medical experts for compliance with the certifications we require, and is built on robust quality controls such as ISO 9001 manufacturing standards and the use of Creapure® creatine, paired with independent testing for the absence of doping. These elements collectively set Reflex apart from peers in the market.

This brand vs alternatives highlights a key differentiator: a science-led formulation and a transparent quality framework that aligns with our rigorous vetting process. This informed our decision to partner with Reflex Nutrition for Growth Matrix, ensuring product integrity and reliable post-workout support for athletes.