"i took a pill this morning with some tea, and while i was eating breakfast i noticed my heart rate sky rocket, i don&#039;t know if this happened because i took fastin on an empty stomach or what, but this is a little scary! it literally feels like my heart is going to jump out of my chest! at first i didn&#039;t think i could be reacting to this drug so quick but apparently it&#039;s a very quick release type of pill. i can say that i&#039;m not hungry and didn&#039;t finish my breakfast but at what cost?!  maybe i should try taking a quarter of the tablet, but i think i&#039;m a little to scared and will probably throw the bottle away.. what a waste of $40 oh well better 40 bucks lost than a heart attack. also i bought these over the counter at a rite aid."