My sister was on Red Yeast Rice for a few yaers and was just diagnosed with necrotizing myositis. She started having leg pain and within a few weeks couldnt even walk up stairs. She is in infusion therapy now and seems to be getting better. I was on red yeast rice for 3 years and in Sept of 2017 developed PMR and GCA. Almost lost my vision. Went thru hell of high dosage prednisone and then Actemra. I hit "remission" in November of 2021 finally. My sister and I are being tested to see if statins are not a viable medication for our high cholesterol.