levocabastine levocabastine levocabastine (trade name livostin or livocab, depending on the region) is a selective second-generation h1 receptor antagonist which was discovered at janssen pharmaceutica in 1979. it is used for allergic conjunctivitis. levocabastineclinical datatrade nameslivostinahfs/drugs.commicromedex detailed consumer informationpregnancycategory au: b3 routes ofadministrationophthalmic, intranasalatc coder01ac02 (who) s01gx02 (who)legal statuslegal status us: ℞-only in general: ℞ (prescription only) identifiers iupac name (3s,4r)-1--3-methyl-4-phenyl-4-piperidinecarboxylic acid cas number79516-68-0 ypubchem cid54385iuphar/bps1586drugbankdb01106 ychemspider16736421 yuniih68bp06s81keggd08117 ychemblchembl1201312 ncomptox dashboard (epa)dtxsid1048548 chemical and physical dataformulac26h29fn2o2molar mass420.528 g·mol−13d model (jsmol)interactive image smiles fc1ccc(cc1)2(cc(cc2)n3cc((c)c3)(c4ccccc4)c(o)=o)c#n inchi inchi=1s/c26h29fn2o2/c1-19-17-29(16-15-26(19,24(30)31)21-5-3-2-4-6-21)23-11-13-25(18-28,14-12-23)20-7-9-22(27)10-8-20/h2-10,19,23h,11-17h2,1h3,(h,30,31)/t19-,23-,25-,26-/m1/s1 ykey:zcgomhnnnfpnmx-kytrfiicsa-n y ny (what is this?) (verify) as well as acting as an antihistamine, levocabastine has also subsequently been found to act as a potent and selective antagonist for the neurotensin receptor nts2, and was the first drug used to characterise the different neurotensin subtypes. this has made it a useful tool for the study of this receptor. the pharmaceutical drug bilina is a combination of levocabastine, benzalkonium chloride, and other components and is typically used in a 0.5 mg/ml suspension as eye-drops, dispensed in 4ml bottles for the treatment of allergic conjunctivitis or similar allergic ocular conditions.