Is Oral Stanozolol more toxic to ones liver than Injectable Stanozolol?

I am going to throw some Winny in at the end of my cycle for 6 weeks. Pills are much more cost effective by a large margin and the source is a pharmacy the other is a source I am not too familiar with. I would think they are the same as they are both 17aa and broken down by the liver.

both the same

if taken orally, i believe it passes the liver twice, whereas intramuscularly it only goes through once. not 100% sure though...

Both are 17aa. Injected or ingested...same results.