Yes I think it's because it decrease my GFR. I tried it 2 time and each time it give me prostatis symptoms ... with very hurting burning sensation on penis urethra and balder a d these symptoms can be caused by renal problems....
After stopping it my gfr came back to normal
Topical is OK for me certainly because there is no the peek like on oral:
I think minoxidil has about played out its usefulness. I bought a kilo of it.. If you take too much orally you will get rapid heartbeat..I still use it in various ways.. but truthfully never did a thing to report..