For years anavar was known as a mild drug but it's far from that. It may not be as liver toxic as some but it can have a big impact on lipids. Anavar is one of my favorite orals.
Because i wasn't using anything liver toxic at the time, anavar is metabolized by your kidneys, and i started feeling like shit whenever i would take it... And when i didn't and just stayed on oils, and ran some cranberry extract would start feeling better in a couple days.
Also noticed that i wasn't really responding to caffeine any more...