USN Muscle Fuel STS

USN Muscle Fuel STS Best Price, Review and Benefits

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A great-tasting nutrient-rich drink formulated for maximum muscle support. Muscle Fuel STS has been scientifically formulated to supply active people of all ages with quality proteins from five premium sources, speeding up recovery from exercise and supporting general wellness. The advanced time release system ensures the body properly absorbs the high quality proteins, which accelerate the rebuilding of muscle following a period of exertion. While it is ideal for team sportsmen and women, endurance athletes and bodybuilders, USN Muscle Fuel STS is also perfect for busy people with limited time to prepare meals, those that need a balanced diet to recover from illness, and as a supplement for teenagers with poor nutrition habits and/or high activity levels (half a serving). USN Muscle Fuel STS is an optimally balanced meal replacement shake that’s tasty, easy to mix and conveniently quick to prepare.
  • Quality protein from 5 premium sources (Total 44 000mg amino acids)
  • Advanced time release system for sustained protein uptake.
  • High protein formula including calcium caseinate and WPC.
  • Lactose enzymes for optimal milk solid utilization.
  • Naturally high in BCAA’s and Glutamine.
  • Added L-glutamine, Taurine, Leucine, Iso-leucine and Valine.
  • Great tasting, instant creamy shake for any time of the day.
  • Any person who needs a high quality nutrition shake that’s high in premium protein and carbs to assist in gaining lean muscle; bodybuilders, athletes and non training individuals who need an alternative to regular foods, or to use in-between meals.
  • Highly active children (12yrs+) requiring a balanced meal supplement to optimize performance (half a serving only).

USN Muscle Fuel STS – What is Muscle Fuel STS

Muscle Fuel STS is a sustained release protein / Time release protein with added L-Glutamine and BCAA. The USN STS powder is designed to be an fast effective post workout protein powder but with the benefit of the slow release casein protein that helps feed your muscles for hours after the workout.

Muscle Fuel STS – Mineral and Vitamin Blend

In addition to the blend of slow and fast protein powders, the addition of the BCAA and L-Glutamine there is a blend of beneficial vitamins and minerals.


Zinc has been added to Muscle Fuel STS to help with the metabolism of fatty acids. Zinc also aids recovery and sleep which is all vital for anyone looking for lean muscle gains.


Not only is calcium added to help you maintain healthy bone structure it also is a vital mineral for correct muscle function.

Vitamin A:

Vitamin A is added to USN to help boost your antioxidant levels to protect you from the negative effects of the metabolism process. Vitamin A also helps support the immune system.

Vitamin E:

Vitamin E is another strong antioxidant that is vital for reducing the metabolic stress of weight lifting,  this is why USN included it in Muscle Fuel STS.


Biotin belongs to the B vitamin group and is added to USN Muscle Fuel STS to help with the energy supply during and after a workout.

Digestive Enzymes:

USN has added a whole range of digestive enzymes to Muscle Fuel STS to ensure you are getting all the benefits from the protein, aiding the breakdown into the amino acids to ensure you are recovering and building the muscle you need.

Alternatives to USN Muscle Fuel STS

USN Muscle Fuel Anabolic

Optimum Nutrition Serious Mass

PhD Nutrition Advanced Mass

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