My brother monk has had severe chronic brachycardia for a 4 or 5 years and no doctors could diagnose or remedy it. He told me he first had his first heart attack when a person convinced him to take 5 grams of RSO. This person is known to have killed to have killed her husband and has been rumored to have killed other men she was involved with by poisoning. Many people grow oleander around here. Doubtlessly many suicides are caused by it and more than one Person I have met has accused another person or murdering people with it. If he survived a lethal dose of Oleander, would he have long term effects, such as chronic brachycardia? Search engines are so useless for actually learning anuything on your own that I am forced to ask and I know there may be herbalists around here with knowledge, so I ask; can Oldeander permanently damage the heart or cause long term effects? If so, is there any known way to reverse chronic brachycardia? Are there other common poisons that can make death appear like a heart attack that DO cause chronic heart problems? Can this be revrsed?