I started taking RU58841 about five weeks ago. I added it to my regimen of zix and weekly needling. After the first week I noticed some slight brain fog which went away and was likely placebo. But about a week ago after a month of using roughly 25-30mg a day I started noticing new side effects. I would occasionally feel some slight chest pain the first month after applying but nothing bad. Starting last week, I noticed pain in my chest but mainly my sternum and middle of my chest and lungs. I also noticed heart palpitations and shortness of breath to go along with chest pressure. When I go online my symptoms aline closely with Costochondritis or Tietzs Syndrome. I went to the doctor who said it was highly unlikely a topical antiandrogen could cause this it is was likely Costochondritis or something with anxiety. I got an ekg and chest x ray and everything came back great. But he said it continued it could be a real issue. I’ve even suspected it to be coronavirus but that’s unlikely. I’ve always had anxiety but I’ve never felt like this. I’ve read people online say almost these exact same things on RU. I’ve kept using it but I lowered the dose to 15mg a day and the pain has continued but it could be to early to tell since it’s only been a few days. I’ve heard others say similar things but I don’t know how accurate it is or true. It could obviously maybe be coronavirus since I’ve had a sore throat and swollen lymph nodes but it seems unlikely. I did get tested yesterday. My questions are: Should I continue at a lower dose or should I stop? Could this be Costochondritis, anxiety, coronavirus, or is it from the RU? Has anyone else on RU ever felt this? Could 15mg be effective combined with the rest of my regimen? Thanks and any reply helps!