Building Blocks. Those are the basics, the core fundamentals. The essentials. The stuff you just can't do without. That is what you get in each and every pack of Animal Nitro—essential amino acids or EAAs. EAAs are the aminos your body can't produce by itself, so you need to get em in on your own. Animal Nitro provides you with ample doses of EAAs in easily absorbed, uncoupled form to kick start the growth process. Enhance the anabolic response, fight muscle wasting catabolism and promote heightened protein synthesis, all with the essential, essential amino acid supplement--Animal Nitro.