 [ Symptoms ] my step dad has perscription for both ondansetron odt and oxycodone what kind of illness prompts the use of odt  my step dad has gone to the hospital twice in a row now my mom assures me there is not a problem but i am worried that she may be avoiding a more serious health issue  i know that the odt medication is used for the effects of chemo but my step dad has never had cancer he is however a disabled veteran and while he is still constantly upbeat and healthy he did have a surgery but that was about last year in 2012  are there any specific cases in which a doctor might prescribe both [ Disease ] they are both from the foxglove family and inhibit the blood flow to the brain foxglove is poison used in potions in the 18 19th century causing death