What action do leukotriene receptor antagonists perform?

Leukotriene receptor antagonists function by blocking the receptors for leukotrienes, which are inflammatory mediators that contribute to asthma and allergic rhinitis. Leukotrienes can cause bronchoconstriction, increase mucus production, and promote inflammation in the airways. By inhibiting the action of these mediators at their receptors, leukotriene receptor antagonists help to reduce airway inflammation and relieve bronchoconstriction, leading to improved breathing in patients with asthma or allergic conditions. This mechanism is fundamental to their therapeutic role, as it directly opposes the negative effects that leukotrienes have on respiratory function.