lol..yeah, it can be... it is a 17-alkylated steroid and as with most orals you shouldn't stay on too long..4-6 weeks tends to be the norm, although me myself I rarely stay on longer than 4 weeks. I also use Milk thistle while on dbol to better help protect my liver.
Drink plenty of water......over a gallon a day.
I find that milk thistle and cranberry are very helpful in protecting the liver and kidneys. I usually pop these like candy while on cycle, and also take them when off as well. My liver and kidney tests have always come back perfect.
Yes tylenol is much more toxic than d-bol.
limit your d-bol to 25 mg for no longer than 4 weeks while taking the above supplements with a gallon or so water and you will be fine.