There are possible interactions between your meds. However, these may have been accounted for by your doctor placing you on reduced doses. I won't list the possible interactions as I do not wish to run the risk of causing alarm. However, I would strongly recommedn talking it through with your dispensing pharmacist as well as with your prescribing doctor as already mentioned. Assuming of course that it was just the one doctor who placed you on these meds. Also, any side effects, any untoward unexperiences which you may be feeling whilst you've been on these meds, do make a note and bring it to the attention of your medical care team.