I got a headache at first too, and because I took mine under the supervision of my dr, she gave me alot of advise , you do not drink ANYTHING with caffine in it, you take it very early in the moring, use sleepytime all natural tea around 7 pm or take valverine ( spelling) it was from GNC and its make to help you get sleep. It really is amazing and I know several people who have lost lots of weight and kept it off. Also just like this site phetermine forums was such a support and also gave wonderful ideas as far as excercise and good diet foods.  Another thing is water water water.. that really helps and is these walking tapes, I started off with the power mile and used it for several months, I did it 1 time a day at first then moring and evening.. they are easy quick and fun 
   Amazon.com: Leslie Sansone Walk Away the Pounds -...
Amazon.com: Leslie Sansone Walk Away the Pounds -... 
it honestly takes 15 minutes and you can do it right in your living room , after a month add the weights and what a difference you will see.