Pot is a known cause of anxiety after prolonged use. How you doing now?
Your sentence, a copy from English "You need to drink it!", is not correct.
You cannot put a verb after the verb "potrzebować". It is an error in Polish.
I am sad, even though I have wine - Jest mi smutno, chociaż mam wino
It is not enough to have it - Nie wystarczy je mieć/by je pan/pani miał(a)
You need to drink it! - Trzeba je pić!/Musisz je pić!/Musi je pan/pani pić!