My dr prescribed me 37.5 of Effexor. I have never been on medication for anxiety but i have been having racing thoughts and unnatural focus on people or events that are no longer around (like hearing about an old tv show and focusing on how that time is forever gone and won’t be coming back etc.)

Any thoughts on whether Benadryl or Effexor is better for things like this? It only pops up occasionally which is very strange.