5.1.7. Antileukotrienes
Leukotriene receptor antagonists block the functions of leukotrienes on the local environment and have been shown to have an efficacy in AR patients comparable to antihistamines 20 and might be an added value in athletes suffering from AR with concomitant asthma75. In contrast to antihistamines, they do not cause sedation and they are currently also permitted by the WADA regulation61.