Orals can be more harsh on the liver, but so can some injectables.
I like injectables, due to the fact that it bypasses the hydrochloric acid in the stomach.
You get more even blood levels with injectables.
Now, I'm not saying that I don't use orals, I do.
(I wish I had a Var candy machine$$$)
Injecting is nothing after you do it a few times.
Stick around here and you'll pick up quite a bit.
Best
T