Can i reverse invincible potion?

Iv’e gone and stupidly drunk the invincible potion, only to have come to the part where i have to bury my parents and you have to loose the fight!! but being invincible i cant be defeated no matter how i try!! Anyone got any ideas please? dont want to really have to start again!! cheers

Sometimes we do things that require a fresh start. Unless you have a save prior to drinking the potion then you need to start a new game, unless you play until the potion wears off.