It's the only kind of peanut butter I have...and I'm not gonna be able to go to the store....

Will it still work? Do I need to add any extra fats into the peanut butter for it to be more effective?

it won't... JIF is one of the exact brands to avoid for it's low content (c'mon man, it's marketed as the peanut butter moms can love or some shit lol...)

organic peanut butter don't cost that much... a copule bucks...

i ate some using JIF once and got high as shit