Carcainium chloride (QX 572) is a quaternary derivative of the local anesthetic Lidocaine. Antitussive effect[1][2].
[1]. Lavorini F, et al. Antitussive effect of carcainium chloride in patients with chronic cough and idiopathic interstitial pneumonias: A pilot study. Pulm Pharmacol Ther. 2016 Oct;40:91-4. [2]. Adcock JJ, et al. RSD931, a novel anti-tussive agent acting on airway sensory nerves. Br J Pharmacol. 2003 Feb;138(3):407-16.
















