Patients with asthma are advised to avoid which of the following medications due to potential complications?

Non-selective beta-blockers are medications that block both beta-1 and beta-2 adrenergic receptors. This can lead to bronchoconstriction, particularly in individuals with asthma who rely on beta-2 receptors for bronchodilation. When these receptors are inhibited by non-selective beta-blockers, patients may experience worsening respiratory symptoms, including increased wheezing and difficulty breathing.

In contrast, analgesics, antacids, and inhalers do not typically pose the same risk for asthma exacerbation. While certain analgesics may need to be used cautiously, they are not inherently problematic for asthma management. Antacids primarily affect the gastrointestinal system and do not have a direct impact on bronchial function. Inhalers, specifically bronchodilators and corticosteroid inhalers, are crucial for managing asthma symptoms and preventing attacks. Thus, the specific concern with non-selective beta-blockers makes them a key medication that asthma patients are advised to avoid.