"First pass effect" after rectal administration of thiazinamium methylsulphate [proceedings].
D000284:Administration, Oral; D001682:Biological Availability; D006801:Humans; D011398:Promethazine / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000378:metabolism; D013488:Suppositories
D013488:Suppositories; D011398:Promethazine