As stated on the bottle, I took one a day for two weeks. I take it as soon as I wake up. After the two weeks, I noticed it wearing off so I now take one in the morning and one at about 2 PM. So far one month of taking the pills it has really helped me not to eat. I have lost about 15 pounds. I really like these and plan to purchase more as I continue to lose weight. I have a slight boost of energy without really noticing. Like I have the want to do more things. I seem to focus more. I have never felt the racing heartbeat or anything before.