Talk to your doctor if you have questions about your medical condition or your treatment. Hold the canister with the mouthpiece on the bottom and facing you and the canister pointing upward. The structural formula for ipratropium bromide is: C20H30BrNO3 H2O ipratropium bromide Mol. Beta-receptor blocking agents should be used with caution in patients with hyperreactive airways. For patients using the ipratropium HFA inhaler, the peanut soybean soya lecithin allergy warning does not apply. Therefore, before using this product, tell pentru ipratropium cod your doctor or pharmacist of all the products you use. These studies enrolled males and females ages 40 years and older, with history of COPD, smoking history of 10 pack- years, an FEV1 65 and an FEV1 FVC 70.