This registry is a place to share positive or negative side effects of using Phentermine. If you directly experienced a side effect while using Phentermine, then we encourage you to enter it here. Please note that entries here are the experiences of individual users, and in no way means that you or anyone else will experience the same side effect, since the same medication affects people in different ways. Please always contact your physician.
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December 4th
2007
8:24 PM
I have been taking Phentermine under the direction of my dr. now for about 2 years (on for 6 months off for 6 months). I started at 250 pounds and I'm now at 180. My goal is 135-140.
I can not stress enough how very important it is to DRINK WATER while taking this medication. You CAN DIE if you don't.
I ended up in the hospital for severe dehydration once, and that will never happen again. My hands locked up, my body started shaking, had a fever of 104, etc,.it's not fun.
Side Effects I have experienced:
Rapid Heartbeat
-- By sighlent | Reply | (4) replies | Private Message mePanic Attacks / Anxiety
Nervousness
Easily Irritated
Sick at my stomach
Constipation
Constantly Thirsty
Body/Hands Shake if you don't drink enough water
The constant need to stretch every part of my body (this makes you want to get up and run around)
Odd cravings for vegetables and dairy products
Insomnia
Abdominal Cramps (most likely caused by constipation)
Diarrhea (usually only if I drink lots of orange juice or Starbucks)
Feel like you are on speed (because you are)- you will clean your whole house if you take this stuff.