Clenbuterol Tablets 40 mcg contain clenbuterol hydrochloride, a bronchodilator that is commonly used in some countries to manage breathing disorders such as asthma. It works by relaxing the airway muscles and improving airflow to the lungs. Although not approved for human use in several regions, including the USA, clenbuterol is sometimes sought for its stimulant and fat-burning properties. The 40 mcg dosage is considered a standard strength and should only be used under proper medical supervision due to potential side effects such as increased heart rate, palpitations, anxiety, and high blood pressure. Misuse or overdose can lead to serious cardiovascular complications.