I love that people are health conscious but let's not get crazy here. Anadrol was tested in subjects at 150mg per day for months on end and was well tolerated even in senior citizens. You could probably take 50mg of Anadrol a day for 10 years without a single problem. The below study was mice and later rats for 2 years up to 150mg/kg/day oxymetholone (equivalent to 2,000mg
per day for an 80kg male).
And the amount of positive data on the liver protectants
@kingpeon mentioned, you'd have to be suffering from acute diminished mental capacity not to find and see those studies and conclusions.
Toxicology and Carcinogenesis Studies of Oxymetholone