CLENBUTEROL is not an anabolic steroid and was originally formulated for the treatment of asthma. This drug is one of the most effective and truly doing its job of burning subcutaneous fat. Clenbuterol can be used by both women and men without any side effects. The action of the drug can cause heart palpitations, sweating and hand tremors. After 2 weeks of taking the drug, tolerance sets in and ketotifen 1-2 mg must be added to the clenbuterol cycle.