Long time user "I've been using USN Casein for years as a low-carb meal replacement shake. The taste is great and the texture is better than all the other big name brands. It can taste a little grainy if you drink it immediately after shaking (as all casein I've tried does) but the longer you leave it after shaking the thicker and smoother it becomes. Don't leave it to long though!" — Neil (5/5)