there are so many variables when it comes to taking heroin that u need to know more about it...if u r looking for first time then erowid heroin vaults have tons of reports.
So many reports have been written that I doubt anyone will take the time to write out a full report especially since u don't state any more details like experience level, route of administration. I may be wrong, but I doubt it. So I dunno why u need this, u don't state. But for whatever reason I suggest looking around for an existing report. People don't usually request trip reports for drugs that have been around for ages, maybe for rare RCs. There really is not much use I see to me sitting down and writing u a trip report when there is so much info on this already.