Clen 40

Clenbuterol is a substance that has steroid-like effects and is classified as a beta2-adrenergic agonist.

However, clenbuterol — also called clen — is abused by athletes and bodybuilders for its ability to burn fat.

The same receptors that are activated when taking clenbuterol for asthma also help to burn off fat and increase lean muscle mass.

Athletes who use clenbuterol daily typically take 60 to 120 milligrams per day.
Normally this is taken in combination with other performance-enhancing drugs or anabolic steroids.