Not taking that drug and not to 900... In my case, AST ALT at 75 and 70 but still concerning. I have had extentive blood work plus abdominal ultrasound and fibroscan. Historically I have had high cholesterol and AST ALT near the upper limits but this is a spike which cannot be accounted for by fatty liver, etc. I referred myself to a hepatologist who has ordered more blood work. If these enzymes have gone down, great! If worse with no cause revealed, I may need a liver biopsy. Since this spike, I have stopped all meds and supplements except HRT. I also made a timeline of various changes to meds and supplements. What has your doctor suggested for you?