p&b shake with GSE OK?

I read your post about p & b shakes with caprylic acid to pass out candida.
currently it seems like i am passing massive amounts with urine - whole chunks... it all started after i went raw...

i feel i need to add the shakes too but I have GSE. I dont' really want to spend more money. Is it OK to use Grapefruit-Seed-Extract instead of caprylic acid?

Thanks