Contraindications for Ipratropium Bromide include hypersensitivity to:

• A. Penicillin
• B. Hypersensitivity to ipratropium, atropine, alkaloids, peanuts
• C. Aspirin
• D. Latex

Answer: (B)

Ipratropium bromide is an inhaled anticholinergic that blocks muscarinic receptors to cause bronchodilation. A key safety rule is to avoid it in people with known hypersensitivity to ipratropium itself or to other anticholinergic drugs such as atropine and related belladonna alkaloids. Because these medications share the same receptor targets, a true allergy to one raises the risk of a severe hypersensitivity reaction to ipratropium. The mention of peanuts reflects a potential concern about certain excipients or cross-reactive components in some formulations, so it’s wise to check the specific product’s ingredients if a peanut allergy is present. Penicillin, aspirin, and latex allergies do not constitute direct contraindications to ipratropium bromide—the first two are unrelated to its mechanism, and latex is more about potential device components than the drug itself.