Astralean is a potent, long-lasting bronchodilator to treat asthma and related lung disorders. However, the drug is also a potent thermogenic agent and can selectively decrease fat and increase lean muscle mass. This property of Astralean has made it a widely abused drug among many individuals. Because of this selective partitioning effect, the drug is widely abused by both amateur and professional athletes around the world.

Astralean is a beta 2-adrenergic agonist. Stimulation of the beta 2-adrenergic receptors results in smooth muscle relaxation and this property has been widely used to treat asthma (relax bronchial smooth muscles). Clenbuterol has the ability to clear the nasal passages and dilate the bronchus which makes breathing easier. Astralean is very similar to ephedrine or amphetamine in its actions. However, it is much longer lasting than ephedrine. Its sympathetic agonist properties can lead to increased stimulation of the central nervous system, elevate the blood pressure and also has the ability to metabolize body fat and protein. The ability to dilate the bronchioles and relax smooth muscle has led to its therapeutic use in treating asthma and slowing of premature labor contractions. Other effects of Astralean include increasing the heart rate, muscle tremors, sweating, anxiety, hyperactivity and extreme alertness.

The average daily dose of Astralean is anywhere from 40-160 mcg. Anything more than 100 mcg can lead to side effects. Once Astralean is ingested, it is rapidly absorbed from the stomach and remains in the body for 1-2 days. Because of the slowed excretion, the drug can remain the body for a long time and potentate its side effects.

For the healthy individual who does not take excessively high doses, the chances of developing a complication are rare. However, those individuals who have a prior heart problem or a fast heart rate should refrain from taking this drug. Often Astralean can cause a significant lowering of blood pressure, anxiety and sweating. And in such cases a visit to the hospital is highly recommended. One should be aware that Astralean has also been associated with violent behavior, mood changes, depression, paranoia and a few deaths have been reported from damage to the heart.