"i did lose 8lbs in a month but my blood pressure is high! i am usually in the 120&#039;s. but went for my follow up with the dr. and it was 149/95! checked it the next day and it was 145/75. stopped the pills for 2 days and my bp went down. i took the phentermine today and checked my bp 2hrs later and it was 148/102. it does help lose weight fast, but i don&#039;t want hypertension. i am 5&#039;6 and now weigh 177lbs. will keep on my high protein diet. just beware of the side effects. monitor your blood pressure."