Duolin Respules (Levalbuterol HCl) Price List. Medindia's Drug Price List currently has 110,149 brands. New ones are added everyday, please write to us if a brand you know is missing from our list. Drug information on Duolin Respules (Levalbuterol HCl) from Cipla Limited. Levalbuterol HCl Drug Information. This medication is a bronchodilator, prescribed for the treatment or prevention of bronchospasm in adults, adolescents and children 6 years of age and older.