Can interfere w narcotic pain killers used after surgery
Stop it now!
I do not have medical background by any means, but I would like to tell you that it is a very bad idea to smoke heroin/use drugs before surgery, I have just recently had gallbladder surgery, and after that I needed an endoscopy and they went threw a series of questions. (I asked why they needed to know about drug use etc., just out of curiosity) they explained that some drugs can cause MAJOR complications.
If you do use heroin, I would make the doctors VERY aware that you have used, and do not hesitate to tell them how recent you use was
PS. Good Luck with treatment :)