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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 256 reviews 60 medications
   
9.1
Weight Loss 1260 reviews 24 medications
   
8.9
Summary of Phentermine reviews 1516 reviews 9.0

Reviews for Phentermine

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For Weight Loss: "I been on this medicine since July of 2015 I started off weighing 462 and now I'm at 343 as of January 2016. My only side affect are slight headache and dry mouth. It requires you to drink plenty of water which is good for your diet. But overall the best I ever came across. I never was a big diet fan so I really never tried to much but I'm glad I have success on my first try"

   
10

trinatrina01 February 8, 2016

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For Weight Loss: "I was 27 when I started phentermine back in January of 2013. I'm 5'9 and weighed 202. The first month I lost 20lbs!! I was so excited until I developed kidney stones because I wasn't drinking enough water. By May I had lost a total of 40lbs. I weighed 160. In July I got sick again but this time it was my gallbladder so I stopped the pills And over the next 6 months I gained all my weight back plus 20lbs. I rated this a 7 because it does work but it does cause side effects like cotton mouth, acne, kidney stones and (gallbladder problems if you loose the weight to fast) plus when you get off of it you are more than likely to gain all your weight back plus some."

   
6.0

Khall0218 February 8, 2016

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Adipex-P (phentermine) for Obesity: "I just started today I'm 5'6 weighed myself at the doc office I was 215 I'm hoping to lose 30/40 pounds at the most even more if possible I'll come back on the last day of this month to let y'all know how much I lost hope I lose something I plan on working out , dieting as well ....today's date is 2-7-16 thanks for the motivation y'all"

KaylinM February 8, 2016

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For Weight Loss: "I started the pills in August of 2015 first 2 weeks with a very strick diet plan and no exercise I lost 15 pounds now as of February 2016 I lost total of 45 pounds I don't want to lose anymore I only keep taking them to keep the weight off but I kinda eat what I want now THEY REALLY WORK....only downfall COTTON MOUTH....."

   
9.0

Aj628 February 4, 2016

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Adipex-P (phentermine) for Weight Loss: "I am a 31 yr old female. .. 193lbs 5'8" ....and have been on this for 3 days now adipex... and I am down 4 pounds as of yesterday I haven't weighed myself today, but 2 pounds for each day I've been on it so far so that's awesome! I hope to get back down to my happy weight around 145."

   
9.0

As3 (taken for less than 1 month) February 4, 2016

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Adipex-P (phentermine) for Obesity: "I started taking the adipex Jan 15 2016 my starting weight was 232.7 and now It has been 3 weeks and I have only lost 5 lbs but I do have the dry mouth and no desire to eat which I make myself eat at least a small meal daily if I remember. I am hoping to get down to 180 so I am going to start exercising. I think everybody has a different experience with this pill but I am expecting great results I will update again in a couple of weeks!!!"

NikiO (taken for less than 1 month) February 3, 2016

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For Weight Loss: "I started Phentermine on 7/28/15 at my highest weight of 332 lbs. As of 1/28/15 I weighed 268 lbs. I lost 16 lbs in the first week on this medication and have not experienced any side effects other than dry mouth. My goal is 200 lbs by 7/28/16 and I'm well on my way!"

   
10

TM1 February 3, 2016

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For Weight Loss: "245 to 195 from July 03, 2015 to December 25, 2015. I was prescribed Phentermine 37.5mg as a weight loss supplement and used this in conjunction with My Fitness Pal Calorie Counter and very irregular exercise, haha. I noticed an increase in energy and most of my cravings disappeared. My only side effect was cotton-mouth, but only if I didn't drink enough water. Goal is 140 and I will get there. Husband was so impressed that he started in Sept and went from 198 to 174 in just over a month! I am so grateful for this medication and am getting ready to start again!"

   
9.0

Chocoholic090 (taken for 1 to 6 months) February 2, 2016

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For Weight Loss: "I started adipex October 2015. The first month I lost 14 pounds . Then by December I has lost 22 . Haven't been weighed since I go in to clinic 3 weeks very excited ! adipex is amazing"

   
9.0

Jade 1985 (taken for 1 to 6 months) January 31, 2016

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Adipex-P (phentermine) for Weight Loss: "This drug is extremely effective. If you're not losing a lot of weight very fast like the more amazing stories you read, you are not taking full advantage of it. It will give you an amazing kick start to a new life that will be very difficult to maintain and that you must be very committed to or you need not bother -- because the weight will come back otherwise. Friends & I lost 20 lbs per month, so 6 months is the max length of time you should be using it. After you are finished with it, the real you will reappear and you will again have to fight all your original demons; hunger pangs, portion control, will power, laziness. If you can't do that, don't bother to set yourself up for yet another diet failure and heartbreak. OK 2B Hungry :)"

   
10

RoseC1 January 29, 2016

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For Weight Loss: "I started my weight loss journey on December 28, 2015, weighing 250 at 5'4 On January 13, 2016 I started taking 30mg Phen. The first two weeks without Phen, I lost 5 pounds (3 one week, 2 the next) . I cut my calories and walked 2 miles 5 days a week, which is about 40 minutes of fast walking for me. After taking Phen I was HARDLY hungry. Before it seemed like my 1600 calories a day wasn't enough because I would wake up and go to bed hungry. After taking Phen, I would average about 700-1000 calories a day and I felt fine. I have so much more energy that I increased from 2 miles to 2.5 miles and it takes me 47 mins. In the next two weeks of taking Phen and sticking to my diet, I lost a total of 9 pounds. 5 one week, 4 the next. It works!"

   
10

Amara L (taken for less than 1 month) January 28, 2016

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For Obesity: "I started taking this medication because I was diagnosed with type II diabetes. My doctor told me if I could lose some weight I could control it better... So with changing my diet to cater to the diabetes and these pills I started losing weight quickly. I went from 207lbs to my current weight of 173lbs in just a couple months. I feel great..yeah, you'll drink more water from having dry mouth and be a little constipated off and on, but to me it's worth the side effects because now I am a controlled diabetic and have plenty of energy to actually play with my kids! I'm sure these pills aren't for everyone, but for me... They work and are continuing to work. I look and feel great!"

   
9.0

UberMom (taken for 1 to 6 months) January 27, 2016

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Adipex-P (phentermine) for Obesity: "When I started Adipex on 1/15/16 I weighed 224 lbs this is the heaviest I've ever been. My doctor said I hit a plateau. I work in a doctors office and when I went to work on 1/26/16 I weight 208 lbs! I weighed myself on 2 other scales because I couldn't believe it. I wasn't hungry at all but I knew my body needed nutrients so I have been having protein shakes. I drank 1 in the morning and one in the evening and I took a multivitamin everyday as well. I have literally lost 16lbs in 2 weeks. Excited to see what I weigh at the end of the month..."

   
10

K822thomas (taken for less than 1 month) January 27, 2016

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For Weight Loss: "I started taking this back around the last week in December of 2015. It is now January 24, 2016. I have only lost 6 pounds. I am very active and my diet has improved drastically, so I don't know why it hasn't worked for me. I have been debilitated by the crippling headaches up until 2 weeks ago. The were like the worst headaches of my life on a daily basis for weeks on end. I thought I was going to loose my mind and my job. Yes, I stayed hydrated and ate right, so it wasn't that. I'm dissapointed. I'm going to stop taking it now because research says tolerance sets in after a few weeks and one should discontinue therapy."

   
3.0

MamaSims January 24, 2016

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Adipex-P (phentermine) for Weight Loss: "I am 58 yrs old and my BMI when I started was 39. I have lost 35 lbs in 6 weeks without much effort. I just don't crave anything anymore and I want to drink water now. I never did before. I have the metabolism of a thin person!! I have 60 more lbs to lose and I am so excited that I will achieve this goal!! This medication is nothing short of a miracle!! It works !!"

   
10

ChrissyP (taken for 1 to 6 months) January 24, 2016

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For Obesity: "I started on phentermine 37.5 mg on 12/11/15. 5'11" 364 lbs. At my first 30 day weigh-in after watching diet, eating 3 meals and 3 snacks a day, drinking lots of fluids (mainly water) and staying between 1200-1500 calories, I weighed 351. I lost 13 pounds. Wow! My next official weigh in is in 90 days and my doctor thinks I will be down at least another 30 pounds. I am also using the Fit Bit tracker. I am slowly increasing my steps per day and adding everything that I eat or drink into the calorie counter. This makes me more accountable."

   
10

It's Time (taken for 1 to 6 months) January 24, 2016

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For Weight Loss: "Last year I started taking phentermine 37.5 mg and lost about 15 pounds, but when I stopped I gained it all back. So I went back on it December 1 and started Weight Watchers at the same time. Eight weeks later I have lost 21 pounds. And my cholesterol has dropped 30 points already from 189 to 159. The key this time around is the WW. You're wasting your money on the Phen if you don't follow some sort of diet program and learn to change your eating habits for life. My downfall last year was thinking I could eat anything I wanted and not gain weight, and that's why you gain when you stop taking the pills. I am 59 years old and can't do that anymore."

   
7.0

Weight Watchers and Phen Fan (taken for 6 months to 1 year) January 23, 2016

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Fastin (phentermine) for Weight Loss: "I stayed tracking these to lose weight in 2011 went from a size 24 to 16 in 2 months. Went back to 18 cause in 2014 I had another baby, going to start these again. All these it makes your heart pound ...... That's what's making you lose weight, cardio it gets the heart pumping with out all the exercise"

   
10

TinaMaeMinx January 23, 2016

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Adipex-P (phentermine) for Weight Loss: "These are all fake commants for sure"

   
1.0

00000 January 23, 2016

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For Weight Loss: "I just started this medication on January 19th. Here it is, January 22nd, and I'm already down five pounds! I'm only on 15mg, but five pounds in three days is fantastic. It has completely suppressed my appetite. I used to only want to drink cokes and snack all day, but now I'm more into water than soda. So far, the only side effect that I have experienced is dry mouth."

   
10

Kate2016 January 22, 2016

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For Weight Loss: "My doctor recommended this to me 6 years ago for weight loss, which now seems an irresponsible thing for a doctor to do. I lost weight quickly at a rate of about 3 pounds a week.By the 3rd week I was experiencing side effects like constipation and some dizziness. I decided the side effects weren't worth it and stopped taking them I have been able to lose weight through natural means"

   
3.0

Krestan (taken for less than 1 month) January 20, 2016

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For Weight Loss: "I've used this drug 2x's. First time I lost about 20 pounds, which was awesome but after prescription ended, I gained most of the weight back even after I swore I'd never do that. 2nd time I used, no real results, guess my body adjusted to the drug. Each time I took for approx 4 months. My suggestion, achieve weight loss the old fashioned way, workout and make smarter food choices. Track what you eat too. I know that choice isn't anyones favorite, but its natural and much better than artificial drugs. This drug causes insomnia, and crazy mood swings, and irrational thoughts and behaviors. Do yourself a favor, don't use this. While the promise of quick weight loss is so tempting, the long term effects outweigh the positives."

   
2.0

phentermine not worth it (taken for 6 months to 1 year) January 19, 2016

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For Weight Loss: "I took Phentermine and ended up with open heart surgery...I had success with the drug but eventually developed fluid around my heart which turned into a gel causing my heart liner to be glued to my heart and I couldn't breath and it took 2 months for the doctors to find it because my EKG and oxygen levels were fine, I went to the emergency room and an MRI found it right away, they had to do open heart surgery and peel my heart liner off my heart. I was exercising and was the healthiest I had been in years, running 6 miles a day and riding my bike 20 miles and all of a sudden I just couldn't breath and was so tired. Now 4 years later I can not run or do any aerobic type of exercise because I get to out of breath. STOP taking this drug!!!"

   
1.0

Gigi32607 January 18, 2016

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Fastin (phentermine) for Weight Loss: "Within an hour of the time I took my first and only dose of Fastin (bought over the counter), I was on my way to the hospital with Tachyacardia. The pain was enormous."

   
1.0

Reganee January 17, 2016

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For Weight Loss: "I started the medication on December 17th 2015 at 6' 1 332lbs. As of today I am at 317.4. I am extremely happy with this weightless and medication. Goal weight is 250. I'm extremely active and I am police officer, female. On December 27th, 2015 I fractured my ankle at work and haven't been able to work out since. I was going every day for 2 hours and running a mile each morning. Portion control is key. I was still able to lose the weight by drinking vegan type protein shakes for breakfast and vegetables and chicken breast. I go to the Dr. today for my refill and weight check. Ill be sure to post the inches lost. Main thing is to keep pushing and keep working out. The pounds will be shedded. Remember to eat to avoid those nasty headache"

   
10

Kb10 January 16, 2016

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