No one serving shouldn't be okay, due to the fact your body can ONLY absorb 15mg of protean per hour. Also protean isn't massively impotent, its just like a big sponge. So when you drink water the protean absorbs it and just makes your mucels look bigger instead of atchually being much stronger. If you do want protean you should take it in small amounts but every hour or so.
Not talking shit, learnt that off a uni student