Can I use Avinza if I am taking selegiline?

You should not use the painkiller Avinza (morphine) if you take the anti-Parkinson's medication selegiline (Eldepryl), or if you have taken it in the last 14 days. Selegiline can increase Avinza's potency and cause serious overdose symptoms, such as slow or shallow breathing, low blood pressure, seizures, shock, coma and even death. Before starting Avinza, it's important that you tell your doctor if you've taken selegiline.