I suffer from seizures and bought some from a place on this site.I had not taken my seizure meds for a few days because i was seizure free for over a year.low and behold after taking for 3 days I had a small one. Im not saying it was the talwin but I read on the intetnet they can cause them.so I stopped taking them and got back on my seizure meds and have been ok for a year. I am going to a pain dr and taking diladud for 3 months now and seem ok. Also oxycontin made me have them and many xanax.I was ok for years but time has changed my brain i guess.