You can look up what your doctor gets paid by pharmaceutical companies. The number should be close to 0 in my opinion. If you look me up, I think I have under $50 which I think came from a lunch I walked into as a fellow and my name got written down.
I delete every email any pharma rep sends me. I have brought a couple to tears when they approach me at conferences when I confront them on their company's bullshit.
If a colleague goes to a pharma dinner, I ask them why they cannot afford their own dinner on their salary.
Anyway, some physicians are like me. Most will do a little interaction that is likely not super harmful, but I still recommend avoiding it. The info you get from the pharma company can be accurate, but usually has a slant or is incomplete. I just tell them to point me to the peer reviewed article and that shuts them down fairly quick.