I would not invest in this product unless you want to become tired all day long. Whatever ingredients they are using do not work.
When you purchase the product, they say it takes about a week to kick into effect. They were correct about that for sure! I became extremely tired after about a week and my workouts were terrible as well.
I would not recommend this product whatsoever to anyone that is trying to lose weight, gain energy and/or increase metabolism.
Reason of review: Bad quality.