simple question

I just wanted ot know if the vicous from frenzied berserker I stacks with a wep that already has vicous?

I was actually wondering the same thing last night!

yes

please consult ur doctor in advance :)

All vicious stacks, you could theorically get 8d6 vicious, but without gimping yourself with a **** weapon you will reach 6d6 vicious dmg from fb I and fb III.

Hope this helps.