Displaying 8 results of Clenbuterol Impurities Clenbuterol is a popular bronchodilator and weight loss drug, but it is not without impurities. These impurities are unwanted substances that can be found in the drug during the manufacturing process or due to contamination. Some of the common impurities found in Clenbuterol include related compounds, degradation products, and residual solvents. These impurities can affect the purity, safety, and efficacy of the drug, and hence it is important to monitor and control their levels.