t see it as very toxic. It takes high
dose for a long time to actually cause permanent damage with opiates. Pure heroin is not even real toxic to the body or brain, it is the impurities, not the opiates that cause damage, mostly. Unless there is some pre-existing condition that the opiates triggered, there really is no scientific reason you would have done permanent damage with pharmaceutical grade opiates. Just my opinion, of coarse.