Big increase in focus and motivation. Noticeable results. Highly recommended!

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Very good

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I think this product is ok. I see immediate benefits for a couple hours, but then feel a little tired later on in the day. Also seems to be negatively affecting my sleep according to apple watch data.

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This product does what it is supposed to do at its price. It helps me focus and feel good all around. It's good for those who are new and on a budget.

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