so this kid i know said he took creatine and that it caused him to become extremely angry at times. i think its all in his head and placebo. he probably thought it was some super drug and he put himself in that state through some sheer force of ignorance.

is that even possible for it to effect his mood, other than by placebo effect?

The blackouts are real, friend, be careful around this man

I was once very angry that I was never before and it was while taking creatine.
Maybe the confident gained and some great pump come together and where you would stop before, allows you to break through a barrier?

It was weird and I'd never thought I had that in me. Stopped my car on the highway and told some annoying friend of me in the back to get out after partying late in the night.

There's been many recorded cases of someone taking creating and inevitably murdering his loved ones.

But really, sure he might have loved em, but the gains were definitely worth it.

The only way it could happen is if he's dehydrated and fatigued, in which case he could get headaches or general moodiness. But that's not about the creatine. It'd be about him taking wrong.