Compatibility drugs info?

Question

Let's suppose that I take a DrugA for ProblemA and then I got this ProblemB and started to take DrugB. Are there general rules I can look up to figure out whether I can take DrugA & DrugB simultaneously?I mean drugs can cancel each other or vice versa increase effects of each other (in an extreme extend); or one of drugs has adverse effects that are bad for the other drug.

Answer 1

There are no general rules per se. You can look up drug interactions either in the PDR (Physicians Desk Reference), or several other sources.