alloclamide alloclamide alloclamide (pectex, tuselin) is an antitussive and antihistamine drug marketed in finland and spain. it has never been marketed in the us. alloclamideclinical datatrade namespectex, tuselinidentifiers iupac name 2-(allyloxy)-4-chloro-n-benzamide cas number5486-77-1 ypubchem cid71837chemspider64859uniih7b263z7aqkeggd01524chebichebi:135326chemblchembl2103989comptox dashboard (epa)dtxsid9048853 chemical and physical dataformulac16h23cln2o2molar mass310.82 g·mol−13d model (jsmol)interactive image smiles ccn(cc)ccnc(=o)c1=c(c=c(c=c1)cl)occ=c inchi inchi=1s/c16h23cln2o2/c1-4-11-21-15-12-13(17)7-8-14(15)16(20)18-9-10-19(5-2)6-3/h4,7-8,12h,1,5-6,9-11h2,2-3h3,(h,18,20)key:uhwfvipxdfztfa-uhfffaoysa-n it is sold as an oral solution, containing 6.25 mg/ml alloclamide. the recommended dosage for adults is 25 mg three to four times daily. adverse effects include constipation and sedation.