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Core Muscle Range

The USN Core Muscle range of sports supplements allows you to develop lean muscle and perform at your best every time.

Including protein shakes, meal replacements and general health and well being products, this range has it all to help build that lean muscle. From Whey and creatine to BCAA's and essential vitamins.

Lean Muscle Supplements

Showing 1 - 12 of 26 results


Pure Protein GF-1

Multi-Stage Protein

Protein plays a vital part in repairing and building muscle mass and our Pure Protein GF-1 is the ideal protein shake to support your training goals.

  • 40g of Premium Protein
  • Supports Muscle Recovery
  • Supports Lean Muscle Growth
from £39.99


Multi-Phase Protein

Introducing, USN Lean-8, a breakthrough formulation to the Core Series containing multi-phase proteins.

Tick   Multi-Phase Protein

Tick   Slow Digesting

Tick   Supports Muscle Recovery and Growth

from £39.99


Night Time Protein

The ideal supplement to fuel your body whilst you sleep, the USN Casein Night Time Protein maximises your recovery periods so that you can come back stronger!

Our great tasting Casein Shake is aimed at anyone looking to optimise their recovery during their sleep.

  • Night Time Protein
  • Slow Digesting Supports
  • Muscle Recovery and Growth
from £49.99
250g EXTRA FREE when you purchase our 750g Tub!

Creatine Monohydrate

Our bioavailable pure crystallised USN Creatine Monohydrate is ideal for those looking for that extra boost during their workout sessions. Out Creatine Monohydrate can assist in providing you that all important increase in muscle and physical performance, so you can make the most out of your training sessions.

  • Bioavailable pure crystallised creatine.
  • Creatine can increase physical performance
  • Ideal for short-term, high intensity exercise

BCAA Power Punch

Dynamic Formula

The USN BCAA Power Punch offers a great tasting, easy to mix and dynamic amino acid formula.

The blend of Glutamic Acid and Branched Chain Amino Acids gives you a tasty beverage designed to give you that extra boost to help fight fatigue and support your muscle growth and maintenance.

  • Supports Performance Levels
  • Supports Muscle Recovery
  • Great Tasting Intra-Workout Supplement
from £40.00

Protein Delite Bars

New Flavours Available!

Try our delicious and nutritious Protein Delite Bars; USN’s popular protein bars contain up to 30g of high quality protein, 0g Trans Fat and an advanced Whey Isolate formula. An ideal snack for fitness fanatics on the go, giving you a high quality protein snack whilst tasting fantastic.

  • Up to 30g of Protein
  • Advanced Whey Protein Isolate
  • Tasty and convenient
from £44.82

Whey Protein Premium

Premium Myomatrix

The USN Whey Protein is a premium MyoMatrix whey protein concentrate and isolate blend. Our tasty shake provides you with an impressive 24g of protein per 34g serving. The high value protein is perfect for those looking to maintain and grow lean muscle mass. The Lactase enzyme provided can improve your lactose digestion which is ideal for those who have difficulty digesting lactose.

  • 24g of protein – promoting lean muscle maintenance and growth
  • BCAAs and Glutamine
  • Delicious flavours
from £37.99

100% Pure Leucine

The most researched BCAA to support your challenge!

For high intensity exercise, we fully recommend 100% Pure Leucine to help you reach your goals.

  • Essential Amino Acid
  • Fight Fatigue
  • Support Oxidation Rate
price £23.99

BCAA Syntho Stack

USN BCAA Syntho Stack is the essential amino acid stack! It is a carefully developed combination of the Branched Chain Amino Acids (BCAAs).

The BCAAs, which comprise of the essential amino acids Leucine, Isoleucine and Valine, make up approximately one third of skeletal muscle in the human body.

Our tubs come in 2 sizes, one containing 120 capsules and another containing 240 capsules, offering great value for money!

from £19.99


All-In-One Formula

The USN Grow-XL All-In-One lean muscle catalyst is scientifically formulated for those looking to add considerable size and mass. Combine your rigorous training in the gym with this great tasting blend of muscle building nutrients which includes:

  • 51g of high quality protein per serving, supporting the maintenance and growth of lean muscle mass
  • 17g of essential BCAA’s, L-Glutamine and Glutamic Acid
  • 3.2g of Creatine
from £79.99

Protein Mousse

Shape up for your ultimate body with our indulgent Protein Mousse. Our delicious high-protein, low-fat, sugar-free mousse provides the ideal dessert to support your fitness challenge.

  • Delicious High-Protein Mousse
  • Low in Fat
  • Sugar-Free
from £24.99

Amino Pro Nano Stack (120's)

Amino acids are the chemical units or “building blocks” that make up proteins and our Amino Pro Nano Stack is an ideal supplement both athletes and weight-training individuals looking to grow and maintain muscle. 

  • Niacin contributes to normal energy-yielding metabolism, as well as a supporting the reduction of tiredness and fatigue. 
  • Vitamin B6 assists normal protein and glycogen metabolism, normal red blood cell formation and a healthy function of the immune system. 
  • Protein is essential for gym goers and can contribute to the growth & maintenance of muscle.
price £26.99

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