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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 - 10 of 28 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

Protein Fuel 25


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 unhealthy food
  • 25g protein per bottle
from £21.98

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

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

Muscle Fuel STS

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
from £31.99

BCAA Power Punch

Dynamic Formula

BCAA's play a vital role in protein synthesis and can be an essential part of your training. Our BCAA Powerpunch offers you a great tasting, easy to mix and dynamic amino acid formula. Our BCAA formula consists of a blend of Glutamic Acid and Branched Chain Amino Acids.

  • ƒƒProvides you with a supply of Glutamic Acid and Branched Chain Amino Acids
  • Protein supports the growth & maintenance of muscle
  • Easy to mix,
  • Fantastic tasting beverage
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

Protein Fuel 50


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
from £25.13

ZMA (90's)

Part of the Core range, our ZMA capsules supply you with natural testosterone support and can increase your hormone and mineral levels. All athletes at one point, will suffer from fatigue, cramping or a lower level of performance, our ZMA capsules provide you with a healthy supply of Zinc and Magnesium to counteract these pitfalls.

  • Zinc & Magnesium
  • Natural male hormone support
  • Increased hormone support
  • Support mineral levels
price £31.00


Two-In-One Formula

A fantastic addition to the Core range, the USN Hyperlean Two-In-One blend is scientifically formulated to offer you a great tasting, easy-to-mix pre-workout shake.

Our energising and refreshing body sculpting agent uses scientifically grounded technology to provide you with a powerful pre-workout which can help push you to break through your fitness plateau, no matter what your goal.

from £37.99

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