Hello arora, Welcome to Healthcaremagic.com Duolin is also known as Combivent inhaler or DuoNeb. This medication does not contain steroids. The combination of Levosalbutamol / Albuterol Sulfate and Ipratropium Bromide inhalation (Duolin ) are used to prevent bronchospasm in people with chronic obstructive pulmonary disease (COPD) who are also using other medicines to control their condition. Levosalbutamol / Albuterol Sulfate and Ipratropium Bromide (Duolin ) are bronchodilators that relax muscles in the airways and increase air flow to the lungs. Stop using this medication and get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Stop using Levosalbutamol and Ipratropium and call your doctor at once if you have any of these serious side effects: bronchospasm (wheezing, chest tightness, trouble breathing), especially after starting a new canister of this medicine; chest pain and fast, pounding, or uneven heart beats; swelling of your ankles or feet; pain or burning with urination; or increased blood pressure (severe headache, blurred vision, trouble concentrating, chest pain, numbness, seizure). Continue using this medication and talk with your doctor if you have any of these less serious side effects: headache, dizziness, nervousness; drowsiness or sleep problems (insomnia); cough, hoarseness, sore throat, runny or stuffy nose; dry mouth, unusual taste in your mouth; tremors, numbness or tingly feeling; nausea, vomiting, upset stomach, diarrhea, constipation; or blurred vision. Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. I hope I have answered your questions sufficiently. Contact me if you have additional questions. Be well, Dr. Kimberly