The molecule is a malate salt resulting from the reaction of equimolar amounts of pizotifen and malic acid. A sedating antihistamine with strong serotonin antagonist and weak antimuscarinic activity, it is used for the treatment of migraine and the prevention of headache attacks during cluster periods. It has a role as a histamine antagonist, a muscarinic antagonist and a serotonergic antagonist. It contains a pizotifen(1+).
2-hydroxybutanedioic acid;1-methyl-4-(6-thiatricyclo[8.4.0.03,7]tetradeca-1(14),3(7),4,10,12-pentaen-2-ylidene)piperidine