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.

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55%(472)
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24%(205)
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11%(94)
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5%(38)
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2%(14)
5
   
3%(19)
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Phentermine review summary

9.0/10 Average Rating

866 Ratings with 785 User Reviews

Compare all 54 medications used in the treatment of Weight Loss.

Reviews for Phentermine to treat Weight Loss

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

User Rating:  
   
9.0

I am 19 years old, 5'3. The very first time I took this was back in January of this year. Took the 30mg. My start weight was 180lbs, that's the highest I've ever been. I took it almost everyday, worked out regularly, but I didn't eat so well. Somehow I managed to go down to 170lbs by the time I finished the 30 pills in the bottle. I took it in the month of March and went down to 165lbs and then I stopped taking it for a while. I just went back on it, doing the 37.5mg now. Start date 07/22/14 weighing in at 165lbs and today I am 161lbs.

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July 26, 2014 8:52 PM

Review by lynnhen:

User Rating:  
   
10

This medicine has been so helpful for me. I am 44 years old and have struggled with my weight my whole life but was able to maintain my weight until I had my fourth child via cesarean section. I started on phentermine on 07/15/2014 weighing in at 250 pounds and as of today, 07/25/2014, I have lost 8.2 pounds. I am also counting calories doing 1200 per day.

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July 26, 2014 1:33 AM

Review by Carrie3:

User Rating:  
   
9.0

I am 39 years old and I have been trying to flatten my stomach ever since I had my last child 15 years ago. I will admit I do love food! I heard about using Phentermine from a friend of mine, and I thought to myself, wow this might actually be what I am looking for! So I made a doctors appointment and she gave me a script for this on June 6th 2014 and I got it filled and started right away, I was told to start out using only half, so I did and didn't feel that it was working using only half so the next day I started taking 1 whole pill. I can say that it was all good, and to date I have not had any side effects. When I started using this medication I weighed a wooping 186!! and today 7/23/14 I am at 168, & want to be about 140.

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July 23, 2014 11:27 AM

Review by Jackie m:

User Rating:  
   
10

I was signed up to have the gastric sleeve procedure done but cancelled a few days prior wanting to try again to lose the weight on my own. I was 245 pounds March 28th and am 5'5. I started Phentermine shortly after that. I am currently 209lbs and it is July 22nd. Very happy with the results. Glad I didn't have the operation even if I would be skinner now the risks were just too scary for me to go through with it. I would love to get down to 160lbs! I am going to keep chugging along.

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July 22, 2014 12:50 AM

Review by Kristy P. (taken for 6 months to 1 year):

User Rating:  
   
9.0

Adipex-P (phentermine): I started off on the highest mg which is 37.5 and it has worked very well for me. In my first month I had lost 26lbs and in 6 months, I lost a total of 90lbs. I DID NOT EAT HEALTHY NOR DID I EXERCISE. I took a break from it a couple of months back because it's not safe to take it for an extended period of time due to the fact that it takes a toll on your liver. I just got back on it again yesterday. It will cause you to have DRY MOUTH, CONSTIPATION, URGES TO DRINK LOTS OF WATER, ENERGY, ABILITY TO STAY FOCUSED, INSOMNIA, FAST HEART RATE, MOOD SWINGS, NAUSEA AND EASES BODY PAIN. I have a heart murmur and panic attacks so after taking this medication, I notice it gets harder for me to breath as the day goes by.

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July 19, 2014 2:16 AM

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

User Rating:  
   
9.0

I'm a 24 year old single mother, and diet and exercise was never in my vocabulary. However, I am the heaviest I have ever been. (weighed less when I was 9 months pregnant). I have taken phentermine 37.5mg once before and I had no idea what to expect. I know that this is not a magic pill, but more of a booster. I've lost 25 pounds within a month, worked out, ate less and consumed more water and cut out sodas and fast food. Was able to wear smaller clothes and the confidence came back. I'm back on it again starting yesterday 7/17/14, and hope I get the same results as last time. My side effects were dry mouth, feeling a little more irritated, heart was going fast, the feeling to constantly move. Smoked constantly. Good luck everyone

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July 17, 2014 12:16 PM

Review by Chi(c)K1 (taken for less than 1 month):

User Rating:  
   
9.0

Adipex-P (phentermine): I started taking Adipex on July 15, and I must say I have definitely seen a difference in my eating habits and it's only been 3 days! Amazing! I was 127lbs in 2012 and somewhere along the line I lost the will to work out and stay fit. Needless to say I gained about 35lbs since then so I am giving Adipex a try and it's doing wonders for my appetite! I experienced dry mouth the first day and that's the only side affect I have had. I eat a yogurt for lunch and dinner is 2 turkey sandwiches on wheat bread, and I drink 2-3 bottles of water a day. Eating right and exercise are key to helping drop weight quicker! Once you stop taking the pill you must maintain good eating habits along with exercise or the weight will come back plus more!

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July 17, 2014 8:50 AM

Review by jstegj11:

User Rating:  
   
9.0

I can really say that I was nervous starting this pill because I read the reviews and didn't want to experience the side effects. I just started this pill on Tuesday, 7/8/14 and it has now been exactly one week and one day. I started weighing 188.6 and as of today, Wednesday, 7/16/14 I weighed in at 180.4. So that makes a total of 8.2 pounds lost in just one week and and day. I normally work out but I didn't work out for this entire week purposely just to see how much weight I would lose without my daily exercise. I did however maintain my healthy meal plan and I drink 1/2 to 1 gallon of water daily. I am 25 years old and 5'10. I haven't experienced any side effects (knocks on wood so I wont begin to experience them, best wishes to all!

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July 16, 2014 10:27 PM

Review by LF14:

User Rating:  
   
10

In my last post, I had lost 8lb in 2.5 weeks. Starting weight was 181lbs, I currently weigh 168. I have been on Phentermine for about 6 weeks. I have had a busy summer, in which I would usually gain weight however, I have continued to lose even though my busy schedule makes it hard to work out every day. Currently down 13 lbs! I will begin to increase my workout schedule as I am not as busy anymore. Hoping to lose another 10-15lbs within the next 8 weeks (maybe more!).

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July 16, 2014 10:41 AM

Review by cjhurley28:

User Rating:  
   
10

Adipex-P (phentermine): 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

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 Beautiful Woman (taken for 1 to 6 months):

User Rating:  
   
10

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 Em2014x (taken for 1 to 6 months):

User Rating:  
   
9.0

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

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): 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): 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

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

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 xoxolovexoxo (taken for 1 to 6 months):

User Rating:  
   
7.0

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): 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

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

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

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 hopeful33:

User Rating:  
   
9.0

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

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

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