I'm allergic to morphine, so will i be allergic to oxymorphone medications also?

Opiate allergies?: It depends. Alot of folks claim to be allergic to various medications, when in fact, they have side effects. Since we do not know what your reaction was to Morphine, it's kinda hard to predict what you might experience with other drugs. My advice is to try and avoid taking Opiates on a regular basis, as you may become dependent and then have withdrawal symptoms when you don't take the Opiates.