In our industry, clenbuterol (much better known as clen) is usually called the "cousin" of ephedrine. That's due to the fact that clen promotes beta-2 receptors as a beta-2 agonist. Essentially, that means clenbuterol permits you to burn kept fat calories (your bodyfat) as energy prior to you reach other sources of fuel. Clenbuterol is approved in specific EU nations as an asthma drug, however it's banned by the United States FDA. However, it has actually found a house with livestock farming worldwide. It's fed to animals to increase fat free lean mass (FFL), so the animals get more muscles and less fat.