Clenbuterol is famous drug used as an asthma treatment, but is widely known as a bodybuilding drug. Clenbuterol is a sympathomimetic amine, which is a stimulant. Inhaled steroids are used for asthma, and anabolic steroids are used for bodybuilding. Another famous drug for asthma and bodybuilding is Albuterol. I would suggest choosing a drug that matches the closest to what you are learning right now.