Usn nutrition protein fuel 25 is a delicious ready to drink nutrition shake it is high in protein and low in carbohydrates making this an ideal protein shake for those following low carb diet plans and weight management programsr usn nutrition protein fuel 25 delivers 25g protein per 330ml bottle it also helps deliver key vitamins and minerals to your system that help with various processes within your bodyr usn nutrition protein fuel 25 offers a convenient protein boost and help with eleva