I don't believe it's liver toxic really, I don't see how it will pass your liver by injection. Its definitely no where near superdrol. Kidneys will be the problem, cholesterol and stuff like that. That's why it's absolutely recommended to run cardarine throughout cycle and pct. I also recommend to drink a ton of water because when you have might sweats on tren you Better believe your piss will be yellow as a lemon if you don't drink.