Spiropen (Clenbuterol HCL BP 40ug) is a powerful bronchodilator and thermogenic agent widely used for fat loss, muscle preservation, and enhanced performance. Originally developed to treat asthma and respiratory disorders, it has gained popularity among athletes and bodybuilders due to its strong fat-burning effects and ability to maintain lean muscle mass. Unlike anabolic steroids, Clenbuterol does not directly build muscle, but it stimulates the metabolism and increases energy expenditure, making it an ideal choice for cutting cycles. Spiropen (Clenbuterol) is a prescription medication and should only be used under medical supervision. Misuse can lead to serious health risks. Always consult a healthcare professional before use.