I was on Darvon for years. I was also diagnoised with tachycardia and bradycardia. I no longer can handle the money or bills. I get lost when trying to drive places and end up somewhere else. I fall quite a bit. Could the heart problems effect the oxygen to the brain. I am see several doctors for depression and suicidal thoughts. I'm also see doctors for controling pain as I am disabled physically. Mostly arthritis related disability and panic attacks. Could this be the reason why I can not think straight anymore. I'm only 56yrs old and to young for such.