comparison of plasma level data obtained from a dose-response study to that of a 14c material balance study indicates that 99.48 % of the alpha- [ 4- ( 1,1-dimethylethyl ) phenyl ] 4- ( hydroxydiphenylmethyl ) -1-piperidinebutanol ( terfenadine , rmi 9918 , triludan , teldane , resp . ) related material absorbed undergoes biotransformation .
C0085173
terfenadine
C0699931
teldane