I have been on Durgesic Patch(Fentanyl)for over 1 year or better.When I change a patch from a new box by a different company I would lose 3 days out of this world. So, I had my Pharmacist to use only one name brand, However, I just started that new box and for 3 days I began hving many of the signs & symptons listed as effects. I have had falling, syncope, nausea, and many others of the effects. So, I have decided to completely just quit taking them all together. Is ther any imperticular signs or effects that I should be klooking for by stopping the medicine abruptly.