i have used multiple oral compounds at one time for 6-8 week stints during preps. var/win/provi as well as win/provi/halo and even added in drol for short stints with them as well.

good liver protection lots of cardio and a nice healthy clean diet are a must. adding tren on top of that will further the issues but again following the above will help off set the stress on the liver. the liver is the biggest concern for most but it isnt what is going to get you in the long run, it's your lipids. everyone thinks that var is mild safe blah blah blah but it absolutely hammers the piss out of your lipids even at low doses. it will drive your hdl into single digits and crank your ldl through the roof. so again another protection method should be used to be as safe as possible. adding in a supplement like nialor and or any other cholesterol lowering supps can and do help. my liver values got cranked up last year during prep but my lipids stayed in the normal range with proper supplementation