Ciba did sell Dianabol for some 20 years; they pulled it because it had no therapeutic use anymore but not because of sides. Another 17aa-AS (Anadrol-50) is being sold in the US, users take up to 150mg ed without a break and most livers are healthy. The hepatoxicty of 17aa-AS (which includes Oxandrolone) is a fact but the chance of developing a serious problem is low; of course if you put additional stress on the liver with heavy drinking or taking NSAIDs like paracetamol you can get in trouble sooner. And although i said that the chance is low it could be that you develop all sorts of nasty sides in the first week of your cycle.