Not only is USN Muscle Fuel Anabolic one of the best ‘All-in-one’ supplements out there but it is one of the best full stop. Combining all the latest research and bundling it into one product is not easy but USN have done a good job. Most forums and reviews for this product suggest that people are seeing some good muscle gains and recovery. One of the things that makes this product a little different from its main rivals is the inclusion of Tribulus Terrestris. This only adds to the potency of a highly anabolic product. No that does not mean that it is steroids by the way. Simply that is is good at creating an anabolic environment within your body. It is this state that allows you to grow.