n=1 here, I noticed considerable shedding and thinning when taking creatine. I've taken it alone for 3 months and noticed thinning and shedding. I took it with Minoxidil and Finasteride for six months and noticed reduced shedding. At one point I stopped Mino and Fin, but kept the creatine and the shedding increased rapidly.
I am now on Minoxidil and Finasteride, with no creatine, and no longer have shedding.