bamipine bamipine bamipine (trade name soventol) is a pharmaceutical drug acting as an h1 antihistamine with anticholinergic properties. it is used as an antipruritic ointment. no oral use is known. bamipineclinical datatrade namessoventolahfs/drugs.cominternational drug namesroutes ofadministrationoral?, topicalatc coded04aa15 (who) r06ax01 (who)identifiers iupac name n-benzyl-1-methyl-n-phenyl-piperidin-4-amine cas number4945-47-5 ypubchem cid72075chemspider65061 yuniiy6bhz28o92keggd07197 ychemblchembl520400 ycomptox dashboard (epa)dtxsid5057751 echa infocard100.023.261 chemical and physical dataformulac19h24n2molar mass280.415 g·mol−13d model (jsmol)interactive image smiles n(c1ccccc1)(cc2ccccc2)c3ccn(c)cc3 inchi inchi=1s/c19h24n2/c1-20-14-12-19(13-15-20)21(18-10-6-3-7-11-18)16-17-8-4-2-5-9-17/h2-11,19h,12-16h2,1h3 ykey:vzsxtykgywisgq-uhfffaoysa-n y (verify) adverse effects side effects are typical of an old (first-generation) antihistamine: tiredness in adults, agitation in children, mydriasis (dilation of the pupils). these effects are rare when bamipine is applied topically as an ointment. allergic and hypersensitivity reactions are also rare. acute eczema can be worsened by bamipine ointment. contraindications and interactions no clinically relevant contraindications or interactions with other drugs are known. pharmacology pharmacokinetics when applied topically, the maximal effect is reached after 20 to 60 minutes and lasts up to 48 hours. bamipine is not absorbed through intact skin in relevant doses.