liver toxicity from anavar is not likely to happen, unless you take it @ around 100mg ed for 3 weeks.
raise in blood pressure from the anabolic steroids are more likely.
also sinse you most likely bought your anavar off the black market, could be w/e fillers they used in the pills. never know what else is in them.
start out @ 40mg e.d. to get used to it, then bump it slowly up to 50, then 60.
something like this,
1rst week-40mg e/d
2nd week-50mg e/d
3rd week-50mg e/d
4rth week-60mg e/d
5th week- 60mg e/d
liver hepatotoxicity of var is very low, and the last thing you should worry about on this cycle, unless you have liver problems already.