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 142 reviews 56 medications
   
9.2
Weight Loss 862 reviews 27 medications
   
9.0
Summary of Phentermine reviews 1004 reviews 9.1

Reviews for Phentermine

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Review by cjhurley28:

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: I have been on this medicine for nearly one week. I have lost 8lbs since starting this medicine. I take half a dose on a empty stomach and then drink protein drinks both for breakfast and lunch. Then eat a light supper and been eating about 1100 calories or less a day. I go to the gym about 3 to 4 time a week. I have noticed every day a change in my weight. I haven't had any side effects my blood pressure been running great. I don't experience any nausea or vomiting with this medicine while working out. I am planning taking this medicine for 1 month and then taking rest and start it again.

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July 15, 2014 7:21 PM

Review by Ruby's Mom (taken for 1 to 6 months):

User Rating:  
   
10

For Weight Loss: I was prescribed Phentermine for weight loss as I was about 70 lbs overweight. I'd been struggling for 18 yrs with depression and anxiety from a traumatic event and even though the doctors prescribed antidepressants and anti anxiety meds, I still felt lost and sometimes suicidal. Within about 20 minutes after taking my first phentermine pill, I felt absolutely "normal" again. Imagine 18 yrs of struggling, not being able to focus, falling behind at work and at home, losing track of my thoughts and not able to hold a decent conversation then a weight loss medication gave me back my life. As for the weight loss, I changed my eating habits, stopped drinking soda and lost 18 lbs within three months.

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July 14, 2014 11:56 PM

Review by Junit8404 (taken for less than 1 month):

User Rating:  
   
9.0

For Obesity: I have been on phentermine for 16 days today and have lost 15 pounds. I too have cut out carbs and usually walk 3 to 4 times a week! The only side effect I've had is the dry mouth, just drink a water and everything's fine. Can't wait to see my results after a couple months.

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July 11, 2014 4:37 PM

Review by Beautiful Woman (taken for 1 to 6 months):

User Rating:  
   
10

For Weight Loss: My experience was successful! I started the pill on 03-26-14 at which time I was 287 lbs, by 04-30-14, I dropped down to 276 lbs. I must say it really suppresses the appetite and I recommend that you eat at least breakfast daily to avoid getting headaches and feeling nausea. Altough, I did have those side effects, I do recommend eating something again as stated preferably breakfast. The last time I weighed myself I wore 266, however, because I am no longer eating healthy and taking the pill when I remember to take one I notice I have gained some of the weight back as my pcp indicated I would. All in all Phentermine is great if you are going to adjust to permenant lifestyle changes / eating behaviors.

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July 9, 2014 12:09 AM

Review by bodyback2014 (taken for less than 1 month):

User Rating:  
   
10

Adipex-P (phentermine) for Obesity: I gained 57 pounds since Oct. 2012. I was in a accident that broke my legs and was also in a unhealthy relationship with a food addict. I am just starting this medication but feel great. I am on a strict diet and exercise program plus drinking 80oz of water a day. I am hoping I will be back to my normal 125-130 self soon!

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July 8, 2014 1:54 PM

Review by Lady BB:

User Rating:  
   
10

For Obesity: I was seen by my Dr. on June 30th and she stated I was overweight due to my current height. I was in the obese stage. Anyways I've started taking this medication on July 1st, starting weight 198.7 and as of July 7th I weigh 190. Within 7 days I've lost 8.7 lbs. I can not believe these results. I can just imagine the weeks to come. I extremely excited and I'm looking forward to this new lifestyle.

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July 7, 2014 3:45 PM

Review by Em2014x (taken for 1 to 6 months):

User Rating:  
   
9.0

For Weight Loss: 4 and half weeks in, starting weight 14.3 now weighing 13.5 nearly lost a stone. Haven't changed my diet dramatically just make sure I have breakfast every morning, starting to feel hungry again now though as still on 15mg. I'll see my doctor in 2 weeks hoping for next dosage.

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July 6, 2014 4:47 PM

Review by Riobio:

User Rating:  
   
9.0

For Weight Loss: I have a great before and after picture that I can't post on here, but in two months on phentermine (first month 15mg, second month (30mg--and I'm not even done with this month's bottle!) I have lost 19lbs. I am trying to make wise food choices and I hike, but as a single mom I don't have loads of time to go to the gym etc. I feel so good about myself. My goal is to lose 35 more lbs to reach 150lbs and then maintain that. Honestly, I eat breakfast, and then I nibble here and there, but I'm just not hungry at all. The dry mouth is pretty rough, including the horrendous breath it causes (I carry gum and little mouthwash bottles). I'm also on Wellbutrin 300mg for clinical depression, but I was on that for months without a single pound lost.

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July 3, 2014 7:55 PM

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

User Rating:  
   
2.0

Fastin (phentermine) for Weight Loss: I took Fastin this morning and within 30 minutes, my heart was pounding so hard I thought I was going to throw up. I don't like the way it made me feel.

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June 28, 2014 11:05 AM

Review by bigpita:

User Rating:  
   
8.0

Fastin (phentermine) for Weight Loss: I started Fastin 30mg from my doctor on May 19 2014. You need to change your lifestyle not just pop a pill and be done with it. Because if you don't change, the weight will return. I started at 285lbs in one month I lost 25lbs and feel great. I changed myself with habit changes and exercise. I told myself that when this weight is gone it's staying gone, so I change my lifestyle and you can do the same.

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June 26, 2014 10:08 AM

Review by Him4me:

User Rating:  
   
10

For Weight Loss: Best keep Secret!!

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June 26, 2014 8:12 AM

Review by Em2014x (taken for less than 1 month):

User Rating:  
   
9.0

For Weight Loss: Started phentermine 15mg 3 weeks ago, female weighing in at 14 stone 3 only 5ft 2! First week lost 7lbs, second week lost 3lbs, 3rd week lost 2lbs so far so good. DEFINITELY think I need a higher dosage now though.

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June 25, 2014 8:21 AM

Review by liz2010:

User Rating:  
   
10

For Obesity: UPDATE I started phentermine 1 month ago and have gone down from 250lbs to 229lbs. I exercise 3-4 times a week for an hr usually 25min of T25 and 35 mins or more walking/running my cardio has gotten much better since I started and I can admit I think I've become a workout junky. If I don't exercise for a day or two I feel guilty. Anyhow I've also changed my diet completely. I'm on the low carbs diet and it is'nt so bad one cheat day which is Sunday and I count calories also I still eat bread but only 100% wheat bread hopefully once I reach my goal weight which is 139lbs I can keep my exercise and WEIGHT.

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June 23, 2014 3:14 PM

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

User Rating:  
   
10

For Obesity: Started 6/1/14. Down 18.8 pounds. Highest weight 385lbs. Because of how big I have gotten and some knee and foot injuries, I've not started exercising yet. I want to loose a little more so I can feel like it. But these pills...the first week I could have moved mountains. I had so much energy and insomnia. But that has subsided. I take 37.5mg A half a pill 30 minutes or longer before breakfast. Another half depending on what time I have gotten up, and another half about an hour before supper. If I don't take that last half pill I won't make it until bed time. And right before bed is when I ate the most. No cravings. No sweets or snacks. Only 3 meals a day. I do get hungry. But as long as its working a little hunger ain't going to bother me.

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June 21, 2014 8:05 PM

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

User Rating:  
   
7.0

For Weight Loss: Age: 25 Sex: Female Build: Athletic, Muscular Height: 5' 0" Starting Weight: 178 Current Weight: 164 Time On Phentermine: 28 days Progress: I have never been a smoker, alcohol or caffeine drinker, or red meat eater. For the past 8 months I do 3 days strength/weights &4 days cardio, spending 6-7 hours per week at the gym or outside activity like hiking. It was puzzling to me as to why I hadn't lost a single pound. Got bloodwork &results were PERFECT- no diabetes, no high cholesterol, no hypoactive thyroid, no high blood pressure. Doctor prescribed Phentermine & in 1 week I lost 11lbs! It seemed this was a "magic weight loss pill." Weeks 2, 3, and 4 I only lost 1lb each, bringing my total 1 month loss to 14lbs. 2 months to go!

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June 21, 2014 9:16 AM

Review by Nite Nrs:

User Rating:  
   
4.0

Adipex-P (phentermine) for Weight Loss: Been on it for 20 days. No difference in hunger except for about 1 week. No weight loss!

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June 20, 2014 1:41 PM

Review by Meme091987 (taken for 1 to 6 months):

User Rating:  
   
10

For Weight Loss: I started in May and lost a total of 20 pounds starting weight was 205 now is 185. My doctor wants me to get to 160. 25 pounds more to go. I don't really exercise but I'm on my feet all day. I take it sometimes in the morning if I know I'm going to have a busy day. If I'm not I take before work at 3 pm. Side effects dry mouth so I drink a lot of water, that really quinces my thirst but I'm using the bathroom a lot because of drinking so much. I don't eat that much and I try to stay away from sweets, soda, candy and Alcohol. So far so good. Good luck everyone.

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June 18, 2014 7:55 PM

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

User Rating:  
   
10

For Weight Loss: Im 19 years old, 5'3, female. I started taking phentermine in January of 2014. Lost about 12 pounds that month; I went from 180-168. I didn't really exercise like I should've nor did I change my diet which I regret because a notice that the first time you take it, is the first time you drop the most weight. I bought some again on June 12. Starting weight 168 lbs. it's now June 18th weighing in at 163lbs. I work out about 3-4 times a week and started watching what I eat. I completely cut off fast food, sugary sweets, any type of chips, etc. That's 5 pounds in a week which is amazing and I've also lost inches! My goal is 140-145lbs.

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June 18, 2014 3:54 PM

Review by **ktn**:

User Rating:  
   
10

For Weight Loss: I have been taking Adipex 37.5 mg for about a month now. Eating low carbs and more veggies and protein. I eat around 1,000 calories. 5'3" 144 pounds. So far I've lost about 11 pounds and 10". I walk 2 miles everyday. Side effects: dry mouth and constipation (off and on). I worry about the heart valve side effects I've read that other people have had from taking this but I'm hoping to just have to take it for another 2 months or so. I would like to get down to 125 pounds. I do find that the Adipex helps me during the day although I still get very hungry at night. But I fight it by drinking more water. Good luck to everyone in their weight loss.

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June 18, 2014 1:44 AM

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

User Rating:  
   
10

For Obesity: I'm a 33 yr old female 5'2" and currently 241 pounds. I started working out 4-6 days a week starting beginning of May. On June 3rd my doctor prescribed me Phentermine 15mg capsules. I'm taking one every morning when I wake up. When I started the medication I weighed 251 pounds. So within two weeks I've lost 10 pounds. The pill has helped curb my appetite so I'm not as hungry all the time as before. I still get hungry and because I work out so often I make sure I'm eating a high protien low fat/carb diet. I use My Fitness Pal to track what I'm eating and can usually keep it under or at 1200 calories. I've had NO horrible side effects. The only thing I've suffered from is dry mouth which is easily corrected with water.

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June 15, 2014 1:33 PM

Review by hopeful33:

User Rating:  
   
9.0

For Weight Loss: I had been so upset with myself and couldn't even look in the mirror without total let down after gaining a massive amount of weight within the last 2 years. I am 5'9" and as of 4 days ago I weighed in at 251. I begin phentermine on Tuesday and as of today (Saturday, 6/14/2014) I weigh 240 pounds! In 4 days I've dropped 11 pounds. I take 30 mg in the morning and I do feel jittery, nauseous and clammy here and there but I realize if I eat a few peanuts, peanut butter, apple slices..etc I feel much better. The pill definitely curbs my appetite the whole day and I force myself to eat and when I do it's very light. By dinner I am hungry and do eat what I want but my portions are smaller and smarter. I also have cut soda and sugary drinks.

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June 14, 2014 7:06 AM

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

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