Recreational drugs and HIV medications

If you are HIV positive and you are on combination therapy, then you already have a constant amount of prescription drugs in your system. Adding recreational drugs to that carries risks - your body is already processing your HIV medication so it cannot process recreational drugs as easily as a person not on HIV medication. As your liver tries to deal with both your HIV drugs and any other drugs you have taken, there can be a build up of the recreational drugs.
Another danger of taking drugs when you're on HIV medication is you forget to take your medication the right time - or at all.
It is always advisable to check with your HIV doctor. They should be used to dealing with questions about illegal drugs. But if you feel you can't talk to your doctor, there is also PT Foundation.