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User Reviews for Phentermine

Also known as: Adipex-P, Atti-Plex P, Fastin, Ionamin, Obenix, Obephen, Oby-Cap, Oby-Trim, Panshape M, Phentercot, Phentride, Pro-Fast HS, Pro-Fast SA, Pro-Fast SR, Suprenza, ...show all 19 brand names

The following information is NOT intended to endorse drugs or recommend therapy. While these reviews might be helpful, they are not a substitute for the expertise, skill, knowledge and judgement of healthcare practitioners in patient care.

Learn more about Phentermine.

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Condition DownUp Reviews Compare Avg. Ratings DownUp
Obesity 193 reviews 56 medications
   
9.1
Weight Loss 1025 reviews 27 medications
   
9.0
Summary of Phentermine reviews 1218 reviews 9.1

Reviews for Phentermine

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For Weight Loss: "Firstly, I'm 18, 5'4, and 160lb when I started. I've been on it for 3 days and have lost 4.8 lbs. I was going to hold off on my review but I experienced some side effects. This takes insomnia to another level, I would go to sleep at 6-7am just to wake up 5 hours later. These past 24 hours I have felt so lightheaded that I stayed in bed thinking I was going to faint out of dizziness and even while not moving in my bed after waking up, my heart would beat at a thousand beats per second. I drink plenty of water too. I also had unexpected diarrhea. Needless to say the side effects are STRONG. I love the energy boost though."

   
10

ItsD March 10, 2015

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For Obesity: "Just started Phen 375 on March 9, 2015. My first day I lost 3.6lbs. I know most is probably water weight but still good to see. Excited to continue. No serious side effects just dry mourh."

   
9.0

Elizabeth1014 March 10, 2015

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For Obesity: "I started the medication on 3/11/15 and weighed 263, I am 5'10. 37.5 mg 1 tablet a day, I go to the gym and walk on the treadmill for an hour at an incline 13, then 100 sit ups and then go to the arm work outs. I am on a diet only eat grilled fish and tuna & fruits. It seems that I am only down 15 pounds. When I am at my desk during the day, I drink tons of water and have my weights I continue to work on my arms. Just can not believe that I am not loosing more. I am hoping that I am gaining muscle and that is the difference. I was getting really sick to my stomach and cramps on the meds so I stopped taking for about 4 days until I realized I stopped eating when i took the pill. I was taking on an empty stomach."

   
9.0

Mindi36 (taken for less than 1 month) March 9, 2015

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For Obesity: "Ok so I read and heard a lot of reviews on this medication. It seems that people were losing major weight on this drug. I first got a prescription in August of 2014. I'm so wary of taking pills that it kinda scared me to take them. Side effects, will it make my heart beat fast, can I take it with ibuprofen etc... I was just worried because you always hear after the fact that a drug was bad for you. Needless to say I never progressed to taking the whole pill. I did however lose about 5 lbs . In January 2015 I went back. I had gained back what I lost. My weight was 186 lbs. I started taking the pills and lost about 8-9 lbs with in the first 3-3 1/2 weeks . going back for more and down 11 lbs now."

   
8.0

P o w March 8, 2015

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For Weight Loss: "I was prescribed 37.5mg due to weight gain caused by being on Prozac for 6 months. I gained about 30lbs. 160-190. I had been working out and dieting regularly and saw no change in my weight. And I was ALWAYS hungry. I've been on the medication for a few days now, and within 30 minutes of taking my first dose, my appetite was gone. I haven't felt hungry since starting the medication. I have no urges to binge or endulge in any foods whatsoever for the first time in months. I've also lost 2lbs in just a few days. Will check in after a few weeks for progress."

   
9.0

Jonathan Tyler March 7, 2015

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For Weight Loss: "I have started my diet pills in December 2014 my start weight was 272 pounds my goal is to be 150 pounds according to this height and weight chart and I've lost 6 pounds in December and another 6 pounds in January I workout to these workout videos at night and I'm cleaning throughout the day at home to exercise as much as I can. I also drink lots of water throughout the day as well. The side effects I have with it is dry mouth and no appetite but I make myself eat little at a time. I'm very happy with the results so far with the diet pill nothing else worked for me and very happy to have found a diet pill to help me see results. I have lost 14 pounds so far Ive been on them for 3 months now. I will update in a couple months."

   
10

Cmd34 (taken for 1 to 6 months) March 7, 2015

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For Obesity: "I work an off shift. I gained 40 lbs my 1st semester of college. Im 23. 6 ft tall 38 male waist. Suffer from weight anxiety. Been dieting and exercising 4 to 5 times a week. For the past 2 years religiosity. only got bigger and was always starving and p.oed. My 1st month after getting this med from my doc I'm down 13 lbs. My face and belly look like a past picture. I hope to see more changes. I started at 230 now I'm 217. My 1st goal is 200 then my crazy goal is 180 and 34in waist. I'm tired of my pants "shrinking". Also the dry mouth was a pain the 1st couple days drink lots of water. And it keeps me up at night. Running around in my brain. Then I'm not sleeping as deaply as normal but its worth it I'm finally eating less. And full."

   
9.0

jj the maintenance man March 4, 2015

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For Weight Loss: "Hello, I recently found out that my thyroid may be a little high for me. My Tsh level came back at 3.02, I know that is still considered average? But my Dr still prescribed me synthroid (50mg) to see if we can help lower it. And also prescribed me phentermine 15mg and topamax25mg. I took the phentermine and my synthroid and in the morning and I can feel the difference. I had more energy, I didn't feel tired or sleepy at all. So today I decided to try the topamax, I was first kind of hesitant to try but I did, I felt fine, but I noticed it kind of makes me a little more hungry and just weird so I don't think I will be taking that. Has anyone ever took topamax and phentermine together? I would really love some help in regards to this."

   
8.0

Ann dian (taken for less than 1 month) March 3, 2015

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For Obesity: "Hello all I just found this site and I will tell you I am really happy to see all of you sharing your stories I am going to join you I think this will help with this very hard journey. Ok I started taking phentermine on 2/19/15 and I was 357lbs I just got on the scale for the first time since and I am now 344 lbs. so that is 13 lbs in 12 days and I feel great. The only side effects I have is really dry mouth and cold feet. If that is it bring it on. Ok everyone keep up the good work look forward to reading all you success stories. "

   
10

Happy Big Guy (taken for less than 1 month) March 2, 2015

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For Obesity: "For about a year I suffered from depression and put on nearly 70lbs bringing my total weight to 221lbs. I have been taking phentermine for one week now, exercising 7 days a week for 1 hr and eating under 1000 calories. So far I have lost 6 lbs in 6 days, my goal weight is 160lbs."

   
10

fitcat (taken for less than 1 month) February 28, 2015

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For Weight Loss: "Been on Phentermine for almost two months and down 13 pounds! Started at 217 now at 203 Can't wait to lose another 25 and be at my goal weight!"

stay.at.home.mom February 28, 2015

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For Weight Loss: "Lost overall 27 lbs but now experiecing slow heart rate and decrease pulse. Cold feet and excessive thrist"

   
7.0

Simple 55 February 24, 2015

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For Weight Loss: "Hello everyone I started my pills Phentermine 37.5 mg on FEB-18-2015 at 337.2 lbs as of today FEB-24-2015 I am 319.4 lbs 17.8 lbs lost and the only side effect is dry mouth so I'm drinking plenty of water but I also take Xenical 120 mg one capsule half hour after my last meal of the day an that 8:30 pm MY weight goal is to get down to 250 lbs an once I hit that goal I will set my goal to 225 lbs going one step at a time. I'm proud of all of you keep up the good work."

   
10

turah (taken for less than 1 month) February 24, 2015

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For Weight Loss: "On 3 days, haven't noticed any difference in appetite. Going to ask for an increase in mg. I'm on 15mg with 900 calorie diet. But I'm so hungry."

Yvette2k15 (taken for less than 1 month) February 23, 2015

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Adipex-P (phentermine) for Weight Loss: "My knees hurt to walk, my feet hurt to stand...I couldn't take it anymore....I went to doc and weighed in at 287.8...3 days later and I am already down 7.8 lbs. No exercise yet but will when get in the 260's. I feel better already and can't wait to loose another 60."

   
10

shaeshae864 (taken for less than 1 month) February 22, 2015

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For Weight Loss: "Started phentermine 5 days ago. No side effects except for dry mouth and feeling tired. No energy or insomnia so far. I'm on a strict diet as well. No exercise. I've lost a total of 6.8lbs! I'll update later with my progress."

   
10

Tlynn0511 February 20, 2015

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For Weight Loss: "I started phentermine on 2/10/2015... weighed in at a whopping 282 pounds...first week and I've dropped 9 pounds.... I love it only 93 more pounds to go to reach my goal. will post again in two weeks!"

   
9.0

LADYWATKINS03 (taken for less than 1 month) February 18, 2015

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For Weight Loss: "I've been taking phentermine for 2 months and I have lost 22 pounds. I haven't exercised just my normal active life as a mother and student. The only side effect I've had is severely dry mouth and no appetite. I literally force myself to eat something"

   
9.0

Katrina84 February 18, 2015

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For Weight Loss: "I start phentermine today. Read almost all reviews and I'm excited to start taking it. Seems like it has everything I need. I will try it and come back in a month and let you all know how it has worked for me."

   
6.0

Dollycakes (taken for less than 1 month) February 18, 2015

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For Weight Loss: "I started medication 4 weeks ago. The first week I was only taking half a pill. Second week went up to a whole pill. I have side effects of dry mouth, unable to sleep more than 5 hours and some constipation. With all this being said so far I have found positives of losing 11 lbs, watching what I eat, drinking more water and doing portion control. I have back and knee issues so I am unable to exercise so the weight loss will assist me so I can be active in the future. I look forward to starting another month of the medication and losing another 11. My dr. Did say she will only prescribe for 3 months so I will continue to monitor and take what I have learned and implement it in my future to continue with the 60 lbs I need to lose:)"

Wendca February 17, 2015

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For Weight Loss: "This is my second go-round with Phentermine. 5 years ago, I had to research AND BEG, my PCP to prescribe me something for weight loss. I was about 220 lbs then. Was on 15 mg Phentermine for 8 weks, and lost about 20 lbs, but then my doctor abruptly stopped it because it "wasn't her specialty." In the past 5 years, I have ballooned to 273 (as of 2/11/15). I was laid-up, had some debilitating health issues, etc. My weight was never really an issue until I hit my mid-20s (32 now.). However, a friend referred me to her PCP, who also prescribes weight loss meds. I'm on 15 mg now for 1st mo til f/u. We are looking at a 6 mo plan. Already lost approx. 2-3 lbs in 3 days. Home scales are a lil iffy- but it's encouraging! I'd like to lose 100 lbs ."

   
7.0

KathErinLink (taken for less than 1 month) February 15, 2015

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For Weight Loss: "Started taking phentermine on 2/12/15...two days in and feeling pretty good...have more energy. Appetite is hardly there..easy to make better choices....down 3.6 lbs... in two days...so far so good...time will tell...its all about healthy choices...and staying active"

need to lose 93 lbs. (taken for less than 1 month) February 14, 2015

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Adipex-P (phentermine) for Weight Loss: "I am a male and started taking Adipex exactly one month ago. I am 5"5' and weighed 186 pounds on the day I started. After 30 days, I have lost 18.5 pounds. I have balanced the use of this prescription by doing my best to eat a low fat....and low sodium diet. Not dramatic, but just as good as I can. Other than walking, I have done minimal exercise - but only because its a struggle fitting in gym time with work and family. The weight loss was very quick the first week, then leveled off at about 1/2 pound - 1 pound a day. My doctor stressed the importance of eating at the appropriate and perfect times after taking the medicine. She equated it to lighting charcoal on a grill and placing the meat on at the perfect time..>not too early/late"

   
10

John-Y February 11, 2015

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For Obesity: "My starting weight on 1/3/2015 was 274lbs, as of today it is 249lbs. Since being on it, my Type 2 Diabetes has been under control. I no longer am taking my medications. I work out 7 days a week and burn an average of 750 calories daily and I eat a 1430 calorie diet."

   
10

Xnavypc (taken for 1 to 6 months) February 10, 2015

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Adipex-P (phentermine) for Obesity: "I'm 22 years old . 5'2 & I start taking Adipex 01/27/2015 my starting weight was 227lbs so far in the past 12 days I've lost 12 pounds. And I've had no side effects. My goal is to fit in to my skinny jeans again ( 5/6 ) & my goal weight is around 130lbs."

   
10

Dani22 (taken for less than 1 month) February 5, 2015

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