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 135 reviews 54 medications
   
9.2
Weight Loss 798 reviews 27 medications
   
9.0
Summary of Phentermine reviews 933 reviews 9.1

Reviews for Phentermine

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Review by Thaigrl (taken for less than 1 month):

User Rating:  
   
9.0

For Weight Loss: I started taking the meds almost 2-weeks ago. Lost 3 pnds on the scale but my clothes are loose and that's what matters to me. Most people focus on that "magic" number but everyone needs to keep in mind that muscle weighs more than fat; therefore, if you're also working out you're building/toning muscle. I'm 5'5" @ 153 which had my doctor questioning why I was in her office. The first 2 days I had terrible headaches but believe they were withdrawals from completely cutting out caffiene & sugar both at the same time (wouldn't recommend). My appetite has been little to nothing so I have to force myself to eat. I'm continuously drinking water because of dry mouth but that's a good thing. Good luck and don't focus on the scale so much!

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June 13, 2014 5:56 AM

Review by Jess3176 (taken for 6 months to 1 year):

User Rating:  
   
2.0

For Weight Loss: I took phentermine for 9 months losing close to 70 pounds (start weight 200 end weight 130) I was so happy with the results but.... As soon as I stopped taking it I gained all the weight back plus 10 pounds. My doctor prescribed it for me again but my body no longer responded to the medicine. That was my experience. I don't regret trying it.

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June 12, 2014 9:29 PM

Review by Dondea (taken for 1 to 6 months):

User Rating:  
   
10

For Weight Loss: Needed to find a good appetite suppressant. Found phentermine.

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June 10, 2014 9:38 PM

Review by tashee747:

User Rating:  
   
10

For Weight Loss: I have been on a routine diet and exercise program for thirteen (13) months now. The phentermine has helped me tremendously. You cannot take it continously, however coming off for three (3) months as recommended, worked for me. I have lost sixty-six (66) pounds since I started taking this medication in July 2013. The first few months I tried diet and exercise alone with very little success. I have an under-active thyroid (hypothyroidism), and this medication has helped me with my success. I continue to control my diet and still go to the gym regularly, I have twenty-four pounds to go to get to my goal weight.

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June 9, 2014 10:55 AM

Review by jeannekay:

User Rating:  
   
10

For Weight Loss: My weight loss experience with phentermine was successful. Early on, my doctor would refill with the agreement I would stop by every three - four weeks for a blood pressure check. Since my blood pressure was never an issue, and everything else was good, I continued on with the daily time-release capsule, 15 mg. Took a few days to get used to, but after that all was good. In six months I lost 15 pounds and am grateful it was slow and steady. I'm 5'5', weigh 137 pounds, and I feel good. I exercise, eat lots of vegetables, try to keep carbs to a minimum and I'm mindful of portion sizes. Phentermine worked for me. I highly recommend!

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June 8, 2014 6:51 PM

Review by akwahsunny (taken for less than 1 month):

User Rating:  
   
10

For Weight Loss: I've been on phentermine 37.5 for about 3 weeks all I can say is I love it! Not sure how much I've lost so far haven't weighed myself but I've noticed a huge difference in my clothes my tummy looks flatter my face slimmer, I dislike that I don't get hungry but I try eating lots of veggies/fruits throughout the day. I also drink tons of water. There's a lot of negative reviews with people saying they gained all their weight back more but let's be realistic if you're eating out the way you used to of course you are going to gain weight. This pill is supposed to help you change your bad eating habits, it works you just gotta put in work to! Hope this helped oh I forgot to mention I've had no side effects at all. Feel awesome.

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June 6, 2014 4:45 AM

Review by Yvette1:

User Rating:  
   
10

For Obesity: I started taking Phentermine January 16, 2014 after 4 years of not losing and only gaining. Starting weight 238lbs, Current weight 192lbs. Very excited about the changes. Dr said I would eventually plateau and he would take me off. Some minor side effects but overall very happy. Definitely some more weight to lose but this gave me the encouragement I needed.

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May 30, 2014 9:32 AM

Review by lora2424:

User Rating:  
   
8.0

For Weight Loss: I started phentermine on May 1st 2014 lost 9 pounds the first week. It's hard to eat I'm never hungry so I need to start eating something healthy and small a few times a day. I have missed 5 pills this month but now on May 29th I'm down 13 pounds starting weight 189 now at 176 hoping it will continue to drop I'd like to be at 150.

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May 29, 2014 10:42 PM

Review by Kay girl:

User Rating:  
   
10

For Weight Loss: Started 12 days ago at 231lbs., I have lost 11 lbs. No exercise, no cravings...its great! I take the pill 37.5 mg at 7 a,m so I sleep at night with no problems. I wish I would have tried this sooner rather than trying so many fad diets, wasting time. I feel in control of my eating for the first time in years, no more hitting the drive through on the way to & from work each day. Bonus...I have extra cash now that I am not going out all the time buying junk & snacks all day.

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May 29, 2014 9:05 PM

Review by Mrs. Manning:

User Rating:  
   
8.0

For Weight Loss: Today is day 18, I am not losing as rapidly as I was in the first week with a loss of 11 pounds total putting me at 196. I started at 207 I am now weighing in at 192.2. All the side effects are completely gone, I still have to make myself eat. I also go to the gym 3 to 5 times a week. Today I weighed in and went up 2 pounds not sure why I haven't "cheated" my diet. I find that the smart ones brand has desserts to help those with a sweet tooth and you are not totally killing your success. I hope to have better results coming in the near future.

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May 28, 2014 6:16 PM

Review by Amy300+:

User Rating:  
   
5.0

For Weight Loss: I have been on this for about 2 weeks. The first 3 days were great. I had energy and very little appetite. I have lost a total of 5 lbs. I am on a 1200 calorie diet. Lots of water and veggies and fruit. I walk 1-2 miles a day. I have lost inches just wish it would go quicker. Ha ha. I was 308 and now 303. I want to be at 170. Guess it will take another year in a half or so.

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May 23, 2014 2:37 PM

Review by Plumpernickel (taken for less than 1 month):

User Rating:  
   
10

For Weight Loss: Have been on it two weeks today. Starting weight 211 (I am 5'1" tall). I'm down nine pounds. Lost six of those the first week and three the second. Doing it in combination with a low-carb diet. Haven't exercised yet, but I'm thinking I better start. Side effects: dry mouth. At the start, I felt a little jittery and very talkative, but those side effects have subsided. No insomnia or racing heart. It has helped tremendously with my snacks and cravings. I am a nervous chewer and would snack all day long at work on sugary stuff and often wash it down with a soft drink. Now, I drink water at work and have one snack (usually an Atkins bar or other low sugar product), and I get through just fine. No gnawing hunger pangs.

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May 23, 2014 11:31 AM

Review by Tamara73:

User Rating:  
   
10

For Weight Loss: The first month from 179 lbs down to 161lbs= 15 mg the whole time. Now using 30 mg and the first 8 days. From 161 lbs to 154lbs. It would make me very happy if I can make it the next 3 weeks down to 145 lbs. Then I have prescription for 37mg the last month. If I will make it down to 130 lbs in June, well I can't ask for more.

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May 21, 2014 12:01 PM

Review by Scrw96:

User Rating:  
   
9.0

For Obesity: I have been taking Phentermine (30mg) for 5 weeks now and I am down 10lbs! Slow and steady! I've been overweight my whole life, have tried every kind of diet plan out there. I know how to cook healthy, I know about portion control, I know exercise is key....but I just needed that little something to keep me on track and phentermine is it! I read a lot of other reviews on here and those who are saying that they gained all the weight back once they stopped, I can guarantee they were not eating healthy while taking this medication. YOU HAVE TO EAT! This has really helped with my snacking and when I do eat I don't feel like I have to eat the entire plate. THIS ISN'T A MAGIC PILL- you have to eat right and exercise!! Good Luck!

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May 21, 2014 9:56 AM

Review by Heather28:

User Rating:  
   
8.0

For Obesity: Well my dr put me on it awhile ago but I really didn't take it.I tried by my self again I started at 292 and I was almost at 279 and I just got lazy with it so I started yesterday on it 5/20/14 weight 286 and I'm 5'4 I hate the side affects tho I'm jittery, heart races, last night I felt like I was confused maybe I was just so tired but we'll see and the dry mouth but that can be a good affect it makes me want to drink more water. I am a chocolate junkie but I didn't crave anything sweet yay!!!!! I wad not hungry and barely ate anything I working on that tho I'm going to try and eat better today I will update next Tuesday

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May 21, 2014 8:33 AM

Review by bobzgirl (taken for less than 1 month):

For Obesity: Started phentermine 5/15, weighed 251lbs. Today is 5/21 and I'm down to 245lbs. I have to make myself eat. My energy level is fantastic. I used to take naps during the day, now I'm out in the yard working or cleaning up around the house. The only problem I have is sleeping, for the past two nights I literally have not slept. So, I think I'm going to take 1/2 pill tomorrow and see how that works. I'll post again soon.

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May 21, 2014 1:32 AM

Review by steph30:

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: I have been on this for 3 weeks. Lost 20 lbs, no exercise but have more energy and getting more things done. I have no side effects whatsoever.

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May 20, 2014 6:35 PM

Review by jenna22383:

User Rating:  
   
10

For Weight Loss: I started taking 37.5 mg Phentermine 3/2014 and it is now 5/2014. In the past two months I have lost almost 40lbs!. my starting weight was 185 and I am now at 148. I went from a size 14 to an almost 6!! In the beginning I had severe dry mouth. but it has now subsided. I also haven't had any sleeping problems nor blood pressure issues at all. For anyone needing a jump start to weight loss and something to help you make better food choices this medicine is awesome!

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May 20, 2014 6:06 PM

Review by Lola12311:

User Rating:  
   
3.0

For Obesity: I have been on Phentermine for 66 days, take 37.5 mg/day, and lost 10 lbs. However as of tomorrow I will stop taking it. It has caused a very negative change in my thoughts & personality & causes huge mood swings. After being on it for 2 weeks I started noticing I was super sensitive, however blamed it on PMS at the time. It hasn't gotten better though. I have been irritable, angry, restless, & just general feelings of sadness. The past couple days I also have been noticing "flashes" of something dark on the floor out of the corner of my eye but when I look in that direction nothing is there. When I read these are rare side effects I decided I need to stop taking it.

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May 19, 2014 11:16 PM

Review by vinabonner (taken for less than 1 month):

For Weight Loss: Started Phentermine 12 May 14 weighing 148 pounds and I'm 5 feet tall. Side effects are dry mouth and going to the bathroom. It's great it really curbs my appetite and how I think about all the foods I want to eat.

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May 18, 2014 6:52 PM

Review by Hedda Lettuce (taken for 1 to 6 months):

User Rating:  
   
10

For Weight Loss: Started phentermine on March 12, 2014, starting weight 207lbs, and I'm 5'8. As of May 15, 2014 I weigh 174lbs, that's 33 pounds in nine weeks. No exercise at all, did the Atkins low carb diet with the phentermine 37.5mg dose. Dry mouth, some sleeplessness. Now do one day on pills, one day off. Works very well.

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May 17, 2014 11:22 AM

Review by MarathonGal (taken for less than 1 month):

User Rating:  
   
10

For Weight Loss: I have been taking phentermine for 5 days and lost 9lbs. The first day of taking phentermine I had a lot of energy, I felt extremely happy and literally had no appetite. By the second day, my appetite was controllable. I workout 5-7 days a week. If you workout while taking phentermine you will lose weight quicker. I do not have any side effects. I take phentermine with a full glass of water first thing in the morning 30 mins before breakfast. Phentermine has reduced my craving for sweets and carbs throughout the day. I start to feel hungry by dinner time and I eat a healthy dinner. Phentermine REALLY DOES WORK! Just make sure you workout and you''ll be amazed. Good luck.

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May 17, 2014 9:29 AM

Review by happyloser (taken for 1 to 6 months):

User Rating:  
   
8.0

For Obesity: I began taking Phentermine on 12/5/13. At that time I weighed 181 lbs & had 46% body fat. Today I weigh 140 lbs & have 33% body fat. I went from a size 14 to a size 6. I still have weight to lose & am continuing to take the medication, but I thought I'd offer my opinion after 5 mos on the medicine. It works very well. Having said that, I have had some side effects - dry mouth & insomnia. The dry mouth isn't all bad. It has forced me to drink tons of water, but the insomnia is difficult. I take 1 37.5 mg pill in the morning, but if I've had trouble sleeping for the last few days I might take 1/2 or skip a dose all together. Also, the medicine makes me more irritable than normal, but gives me energy to work out.

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May 15, 2014 1:26 PM

Review by Mrs. Manning (taken for less than 1 month):

User Rating:  
   
9.0

For Weight Loss: I took my first dose on May 10th, I dropped 9lbs immediately within the first 4 days without exercise, my side effects the first 3 days were dry mouth, excessive energy, slight difference in my heart rate, clammy and insomnia. Day 5 has been totally different and I started going to the gym again today. My heart rate was still slightly higher and I ask have problems sleeping but everything else went away. I dropped 2 more pounds today from mowing the lawn and walking the treadmill for thirty minutes. I do have to make myself eat I'm never hungry. I eat 6 times per day counting in at about 2000 calories a day. I watch my carb and sugar intake, but eat lots of dietary fiber and protein. My goal is 150 lbs, I started at 207 and I'm now 196lbs.

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May 14, 2014 8:10 PM

Review by A New Beginning (taken for 1 to 6 months):

User Rating:  
   
10

For Obesity: My experience was this. I was practically dying. My body was giving up. My blood pressure was 205. Pre-diabetic. LDL off-the-charts. I had joint pain, could not concentrate, acid reflex, headaches constantly to migraines, could not sleep, in dead of winter I was always too hot, would walk outside at 2am in shorts just to cool down, snoring, could not get any complete rest, and many more. I found this YT site from a Dr. William Davies, Wheat Belly. I instantly decided to quit eating ALL wheat and grains. You will be happy you did. Then I went on Phentermine 37.5mg. I was 315. Since 1/15 to 5/12, I have lost 60 pounds. I'm still losing. You will find out that you need to drink lots of water because it will be difficult to urinate.

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May 12, 2014 10:30 PM

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