Right shoulder feels like it has a heartbeat?

Hi cynyce, Are you asking the question about feeling a hearbeat around your shoulder? Or is there a medication about which you are wondering?
If you have hurt your shoulder or have pain in your shoulder many times you can feel a heartbeat to the area that was injured... i.e., like when you jam your thumb. There is increased blood supply to the affected place injured, therefore you possibly could feel like a heart beat is there?? I don't know if this answered your question or not but I hope so!!!
Be well... pup

Hello cynyce. Are you taking any medication(s). If so, you might hit comment below my answer or just add the names of the medications (if any) onto your question. I'm afraid that without some more detail, I can't give you a possible answer or opinion as to the cause. Best wishes,pledge