Brand Names: Broncodil, Broncoterol, Cesbron, Clenasma, Clenbuter. Pharmachim, Contrasmina, Contraspasmina, Monores, Novegam, Oxyflux, Prontovent, Spiropent, Ventolase, Ventapulmin...... Is available in 10, 20 and 40 mcg tablets. Clenbuterol is known as a sympathomimetic. These hormones are taken to mimic adrenaline and noradrenaline in the human body. Clenbuterol is a selective beta-2 agonist that is used to stimulate the beta-receptors in fat and muscle tissue in the body. Clenbuterol exhibits most of its effects on the stimulation of both type 2 and 3 beta-receptors. It is effective in helping to burn bodyfat Clenbuterol is effective in increasing muscle mass and decreasing fat loss. Clenbuterol generally come is 20mcg tablets, although it is also available in syrup and injectable form. It is often stacked with cytomel. For fat loss, clenbuterol seems to stay effective for 3-6 weeks, then it's thermogenic properties seem to subside. This is noticed when the body temperature drops back to normal. It's anabolic properties subside much quicker, somewhere around 18 days.