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 - 10 of 29 results


Pure Protein GF-1

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Protein plays a vital part in repairing and building muscle mass. Our Pure Protein GF-1 is the ideal supplement to support your training goals. Each serving of Pure Protein GF-1 provides your muscles with an impressive 56g of protein as well as a host of other benefits.

Our popular protein supplement also contains a healthy supply of pantothenic acid which comes with a whole host of benefits including contributing to giving you an increased level of focus and can also help reduce fatigue.

2 x Whey 908g - Limited Offer

Get your hands on 2 tubs of our high-quality Whey Protein Premium for just £29.99!

This fantastic deal will only be available for a short amount of time, so get your hands on it whilst you still can.

As low as: £29.99

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Protein Fuel 25 (8 X 330ml RTD)

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USN's Pure Protein 25 is a Ready To Drink (RTD) high in protein, low in carbohydrate and fat meal replacement shake.

It comes in a pack of 8 x 330ml bottles,perfect for anyone looking for a super tasty, convenient protein shake on the go.

  • Available in two delicious flavours; Strawberry and Chocolate
  • Can be used to replace and entire meal, or just as a snack to help avoid convenience/junk food
  • 25g protein per bottle

Muscle Fuel STS

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Our Muscle Fuel STS provides you with a high protein formula which includes whey protein concentrate. The high level of protein provided can support your training and assist in the growth and maintenance of lean muscle mass with added BCAA and Glutamine.

  • High protein formula including WPC
  • Protein supports muscle growth & maintenance
  • ƒƒPantothenic acid supports the reduction of tiredness and fatigue

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!

Whey Protein Premium

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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

BCAA Amino Gro

The USN BCAA Amino Gro is a a high-quality, fast absorbing, amino acid delivery system, scientifically formulated to provide you with a great tasting blend of essential amino acids.

Providing a variety of benefits, our easy-to-mix blend can help fight fatigue, enabling you to train longer and harder.

  • Fast absorbing
  • Essential amino acids
  • 2 great tasting flavours

Creatine X4

Our USN Creatine X4 contains three Creatines in one capsule which all can assist in giving you an increased physical performance and can also support normal muscle function and protein synthesis. Our Creatine X4 formula is ideal for short, high intensity workouts, and can give you that boost to reach those all important gym targets.

  • Can increase physical performance
  • Ideal for high intensity exercise
  • Magnesium contributes to electrolyte balance, normal energy-yielding metabolism, normal muscle function and protein synthesis
  • Can reduce tiredness and fatigue

Creatine Transport (750g)

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Our advanced Creatine Transport system provides you with a great tasting formula which is designed to give you that extra boost. Our popular Creatine supplement can supply you with a boosting performance, an improving muscle function and an improved protein synthesis. ƒƒ

  • Creatine can increase physical performance in successive bursts of short-term, high intensity exercise.
  • Magnesium can assist in the reduction of tiredness and fatigue whilst aiding your electrolyte balance, normal muscle function and protein synthesis. ƒƒ
  • Phosphorus supports normal energy-yielding metabolism.

Protein Fuel 50 (6x500ml)


Our delicious ready-to-drink protein shake is ideal  for those on the go, with little time to make shakes throughout the day. Enjoy the convenience of having a great tasting protein blend at the ready which contains all the nutrients and supplements you need to give your training goals that extra boost.

  • Contains up to 50g of high quality protein 
  • Convenient for fitness fanatics on the go
  • 3 tasty flavours - Strawberry, Vanilla and Chocolate

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