[hlasdjlfhalwjk]

Switzerland started a program in 1995 where they give medical grade heroin to people suffering from addiction. From the people taking part in this program, none have died from heroin overdoses or due to toxic contamination in the drug.

So heroin is actually pretty safe if used correctly.

[otherme123]

Indeed. If one reads the adverse effects of heroin (e.g. in Wikipedia) and ignores the ones caused by dirty injection, lacing and overdose, you are left with no long term effects other than a blurry "brain impairment to make decissions". On the short term, respiratory depression. That's it.

Not many legal drugs has such short list of side effects.