I've been on it for 11 days, today. I have not had any side effects but don't notice any changes either. It could be helping, but I started with an omega-3 a week before, algae oil, which improved areas that creatine is also suppose to be helpful with so I don't know if the creatine is helping with cognitive functions.
There's no taste so it isn't unpleasant to drink and that is great.