Ipratropium contraindications include allergy to which substances?

• A. Soy, peanuts, and atropine
• B. Gluten and dairy
• C. Penicillin
• D. Shellfish

Answer: (A)

Ip ratropium is an inhaled anticholinergic bronchodilator that blocks muscarinic receptors in the airway to reduce bronchospasm. Because it acts on atropine-like pathways, there can be cross-sensitivity with atropine and related compounds. If someone has a known allergy to atropine or to ipratropium itself, this medication should be avoided due to the risk of an allergic reaction or excessive anticholinergic effects.

Some formulations of ipratropium inhalers or their excipients may contain soy or peanut derivatives (such as lecithin or oil). For patients with severe soy or peanut allergies, exposure to these excipients could trigger an allergic reaction, so these allergies are considered contraindications in those contexts.

That’s why the combination of allergies to soy, peanuts, and atropine is cited as a contraindication for ipratropium. Gluten, dairy, penicillin, and shellfish allergies do not have a direct contraindicated link to ipratropium in standard practice.