REVIEW Pranlukast selectively antagonizes leukotriene D4 (LTD4) at the cysteinyl leukotriene receptor, CysLT1, in the human airway. Pranlukast inhibits the actions of LTD4 at the CysLT1 receptor, preventing airway edema, smooth muscle contraction, and enhanced secretion of thick, viscous mucus.
Nakade S, Ueda S, Ohno T, Nakayama K, Miyata Y, Yukawa E, Higuchi S: Population pharmacokinetics of pranlukast hydrate dry syrup in children with allergic rhinitis and bronchial asthma. Drug Metab Pharmacokinet. 2006 Apr;21(2):133-9.