I have a weak liver. 20mg Atorvastatin daily lowered my liver func. Hence Simvastatin 10mg every alt. Day is prescribed. Is it safe for the liver?

... you will have to continue to monitor this with routine LFTs. elevation in LFts secondary to statin therapy is usually evident in the first 3 months of therapy and is dose dependent. it is recommended to decrease dose or change med if ALT is 3 times the upper limit of normal. if thats the case, pravachol (pravastatin) may ve an option since it is primarily metabolized by the kidneys.
Can affect liver. so have liver functions retested in a couple of months. If elevated could try Zetia (ezetimibe) or a fenofibrate.