Methacholine iodide is a potent agonist of the muscarinic-3 (M3) receptor. By directly stimulating acetylcholine receptors on smooth muscle, it induces bronchoconstriction and airway narrowing. Methacholine iodide is particularly effective for assessing bronchial hyperresponsiveness (BHR) and is utilized as a diagnostic tool in evaluating airway hyperreactivity in patients with asthma-like symptoms and normal resting expiratory flow rates.
Methacholine iodide is a potent agonist of the muscarinic-3 (M3) receptor. By directly stimulating acetylcholine receptors on smooth muscle, it induces bronchoconstriction and airway narrowing. Methacholine iodide is particularly effective for assessing bronchial hyperresponsiveness (BHR) and is utilized as a diagnostic tool in evaluating airway hyperreactivity in patients with asthma-like symptoms and normal resting expiratory flow rates.
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