benactyzine benactyzine benactyzine is an anticholinergic drug that was used as an antidepressant in the treatment of depression and associated anxiety before it was pulled from the u.s. market by the fda due to its ineffectiveness. benactyzineclinical dataahfs/drugs.cominternational drug namesroutes ofadministrationoralatc codenonelegal statuslegal status in general: ℞ (prescription only) identifiers iupac name 2-(diethylamino)ethyl hydroxy(diphenyl)acetate cas number302-40-9 ypubchem cid9330drugbankdb09023 nchemspider8966 yunii595eg71r3fkeggd07498 ychemblchembl70352 ycomptox dashboard (epa)dtxsid0022644 echa infocard100.005.568 chemical and physical dataformulac20h25no3molar mass327.424 g·mol−13d model (jsmol)interactive image smiles o=c(occn(cc)cc)c(o)(c1ccccc1)c2ccccc2 inchi inchi=1s/c20h25no3/c1-3-21(4-2)15-16-24-19(22)20(23,17-11-7-5-8-12-17)18-13-9-6-10-14-18/h5-14,23h,3-4,15-16h2,1-2h3 ykey:ivqofbkhqctvqv-uhfffaoysa-n y ny (what is this?) (verify) its use for these indications was limited by side effects such as dry mouth and nausea, and at high doses it can cause more severe symptoms such as deliriant and hallucinogenic effects. "large doses of benactyzine in normal subjects may produce a state resembling the action of mescaline or lsd." brand names have included: suavitil, phebex, phobex, cedad, cevanol, deprol, lucidil, morcain, nutinal, parasan. while there was some tentative evidence of effectiveness when combined with meprobamate, with the medication no longer available it is not clinically important. history benactyzine was brought to market in the us in 1957 by merck under the tradename, suavitil.