Sounds like a lot of self diagnosis going on.. not the best way to be sure.
Still, the Pharmacist may be able to answer the question, but they may wonder why you ask if you don't have a prescription in hand.
Have you done a search on the web for interactions? You may find some professional information there, here on this blog you get experience from patients, in this case heart patients.
Good luck,
Your pharmacist is a good person to talk to. He or she should be able to tell you if there is a drug interaction. Good luck.