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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10
   
56%(498)
9
   
24%(207)
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11%(95)
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5%(38)
6
   
2%(15)
5
   
3%(19)
4
   
1%(5)
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1%(5)
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2%(10)

Phentermine review summary

9.0/10 Average Rating

897 Ratings with 811 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 JJMS:

User Rating:  
   
8.0

Fastin (phentermine): I am borderline average/overweight for a 5'3 woman just wanted to lose about ten pounds. Extremely effective but as the other reviews state two for me was way too much! Uncontrollable shaking but the heart pounding was nothing less than frightening.

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October 14, 2014 12:45 PM

Review by losing it! (taken for 1 to 6 months):

When I started Phentermine I weighed 181lbs. Today was my 1 month weigh in and I am at 167lbs. I have lost 14lbs in 1 month. I am 5'6 and 22 years old. I am coupling Phentermine with a healthy low carb diet, around 1,200 calories a day with only 20 minutes of cardio a day. Loving the results and have had no serious side effects other than trouble sleeping for the first 2 days.

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October 14, 2014 12:36 PM

Review by Myexp:

User Rating:  
   
10

I am 5'1 and weighed 132 lbs when I started taking Fastin after 3 months I had lost down to 107lbs. I never did exercises and I ate any and everything I wanted and the weight just kept dropping. So to me this is the miracle. I would definitely recommend this to anyone.

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October 12, 2014 6:29 PM

Review by Drano33 (taken for 1 to 6 months):

User Rating:  
   
10

Adipex-P (phentermine): I started Adipex on Aug 18th 2014. I am very happy with the results. At my last weigh in on October 6th I am down 39 pounds & I pray this continues to work!

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October 11, 2014 8:36 AM

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

User Rating:  
   
8.0

Started taking phentermine 9-26-14, I weighed 196lbs. Had my first weigh in today 10-9-14, I now weigh 187lbs. I lost 9 lbs in 2 weeks. Side effects I'm having are dry mouth, headaches and stomach pains, but that could be my loss of appetite throughout the day and not eating. And insomnia. I was taking the pill at 10am. I am now switching to half a pill and at 8am. Will see if it works better for me.

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October 9, 2014 10:46 AM

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

User Rating:  
   
10

Adipex-P (phentermine): I took phentermine for six weeks and lost 22 pounds. I'm 25 years old. My starting weight was 182lbs now I'm 165lbs. This pill is the best I've been off for three months and have only gained back five pounds. I will restart again in November.

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October 8, 2014 2:50 PM

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

User Rating:  
   
10

I started taking phentermine due to some weight gain after a spinal fusion I had in April 2014. I can't do much exercising because I am in pain all the time. I started taking phentermine October 1st 2014. Today is my 4th day I have lost 11lbs. I weighed in at 212lbs and today I weighed in at 202lbs. It's hard to change eating habits but I am doing this so I don't have to have another surgery. Not everybody has the same body make but if you are determined whether you shed the lbs fast or slow this diet pill works. I recommend it to anyone who's willing to take charge of their life. Only you can make that change. Only side effect is dry mouth which means you will want to drink a lot of water.

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October 4, 2014 9:36 PM

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

User Rating:  
   
10

Adipex-P (phentermine): I know everyone is looking for a miracle weightloss pill well let me tell you Adipex is not it. Adipex in my opinion is a special."Helper" yes it definetly suppresses your appetite and gives you a boost of energy. But ultimately you have to change your lifestyle to compliment this. I cut out sugary foods, fast foods, fried foods, and carbs. I drink plenty of water, and workout 3 times a a week with cardio. I do 4 and half miles on the treadmill on a 8.0 incline. Tomorrow makes a whole month and I have lost 25lbs total... And I'm going into my second month fighting harder.

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September 26, 2014 4:38 PM

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

User Rating:  
   
10

Works great for weight loss but I stall after three months as my body gets used to it. Doc gives me lorcaserin during off month to kill my appetite then alternate back to phentermine seems to make it work again. Lost 60lbs but unfortunately will need surgery to get excess skin off mainly in belly area.

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September 16, 2014 9:36 PM

Review by tattooprncess33 (taken for 1 to 6 months):

User Rating:  
   
10

UPDATE~ started taking phentermine on 7/18/14 and as of today 9/15/14 I'm down 32 lbs in almost 2 months. Still have dry mouth but not as bad. Drinking 65 to 70 ounces of water a day along with a 1,800 calorie diet. No sugar no soda no fast food. Everything fresh and baked not fried.mire updates next month.

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September 15, 2014 12:38 PM

Review by Shasi:

User Rating:  
   
10

Fastin (phentermine): It really works, you must eat before Fastin, then go to the gym, if you feel your heart hoes quick. Just take half pill and everything will be right. I'm 35 year old and with gym and my half pill of Fastin I feel perfect in my weight of my 15 year's past.

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September 11, 2014 3:10 AM

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

User Rating:  
   
10

Suprenza (phentermine): I started in July. I was eating healthy but wasn't working out. The one week I started working out I lost 8pounds and no I don't take them every day. But working out is a plus. My goal is 175lbs, I am 240lbs, after a baby.

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September 10, 2014 2:19 AM

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

User Rating:  
   
10

Update: Been on phentermine for one month-lost 11 pounds. Reduced sugar intake drastically, drinking only water. Continuing exercising 3-4 times a week. Wish I could lose faster but slow but steady is working.

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September 5, 2014 10:41 AM

Review by courtcourt:

User Rating:  
   
10

Adipex-P (phentermine): I started Adipex a year ago. Lost 50lbs in 3mos. Then got pregnant. Had him 2 months ago. And only gained 15lbs during and lost right away. But I still didn't reach my goal. So I'm on it again. I'm on day 4 and down 5lbs. I love this pill! Never exercised or dieted before but I'm going try this time.

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September 2, 2014 11:32 AM

Review by DianaNY:

User Rating:  
   
10

I have been taking this medication for a week. The first day I did felt exhausted and slept my day away. So far I have managed to lose 4 pounds in seven days. The only side effect I have is dry mouth. I bought myself a refillable water bottle to carry with my at all times.

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August 29, 2014 5:53 PM

Review by Hubby bun:

User Rating:  
   
10

I started Jan 3 2014, the first week I lost 10 pounds! It's now 8.27.14 and I've lost 55 pounds total. I have been slacking and not working out but I love it. Dry mouth I still have it but makes you just want to drink water I have recommend tons of people! But I also take it at 5:00am or 4:40am and workout for half hour and then again at night for an hour or half hour gives me a lot of energy makes you sweat an not as hungry either. I would recommend it trust me they work.

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August 27, 2014 7:05 PM

Review by Drano33 (taken for less than 1 month):

User Rating:  
   
10

Adipex-P (phentermine): I started Adipex on 8-18-14 & today is 8-25-14. I am down 8 pounds in a week. I hope this kind of weight loss continues but I'll have to wait & see. I did experience a little bit of nausea for the first few days but it wasn't too bad & dry mouth a little. So far I am pretty pleased.

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August 25, 2014 4:33 PM

Review by 2014NewMe (taken for less than 1 month):

User Rating:  
   
10

I started taking phentermine August 15, 2014, weighed 203lbs, today 197 lbs. I've only drank water, had ONLY 3 sips of tea, calorie count varies between 600-2000. I have not cut out sweets/fried foods. I'm not cutting out all those that I enjoy eating, I'm cutting back. If I cut out everything, once I finish phentermine, the weight will come back rapidly when I start back eating regularly, this has been my experience when taking phentermine previously. I'm not going to eat just fruit, veggies, broil foods for the rest of my life, so why fool myself? I'm working out 6 days a week, in the morning and evening. This round will be much better, I'm more determined, my strategy has been thought out. I will post an update, BEST OF LUCK TO ALL!

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August 22, 2014 10:12 AM

Review by Tkbaby73 (taken for less than 1 month):

User Rating:  
   
10

I am 40 years old. I started taking Phentermine 37.5mg 6 weeks ago, and have been doing a 2000 calorie or less diet (because it is hard to eat that much, just not hungry). Just went to the doctor today, I have lost 23 lbs. I did experience a little insomnia the first couple of days but I take the pill at 5:30am before work and that seems to help. I sweat a lot for most part of the morning and have a lot of energy but dry mouth is definitely a side effect, but it helps with getting you to drink the amount of water you need to be drinking if you are not a water drinker like me. I do have a significant amount of weight to lose so hopefully the weight loss continues at this rate.

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August 14, 2014 10:26 PM

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

User Rating:  
   
6.0

Started one week ago, no real change in appetite on 37.5 but did lose 4lbs. Cutting out as much sugar as possible and continuing exercising 3-4 days a week. Only side-effect is insomnia but started taking around 7:00am.

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August 10, 2014 11:21 AM

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

User Rating:  
   
10

I came here to United States 2004, I was 140lbs height 5.8. 30 yrs old almost 9 yrs weight 176lbs I went to my doctor for a check up. Part of my history is diabetes and high blood pressure so I ask my doctor what else can I do other than diet. I start taking phentermine March of 2013 the very 1st day I took 37.5mg I feel like I can't stop working. I'm so focused, so fast I get done everything at work in no time I sweat a lot and had a dry mouth. I ate small portion of breakfast drink plenty of water no soda. No caffeine I ate yogurt for lunch and fruit in between for a week I lost nearly 7lbs. No workout or anything like that I keep taking it for a month, I lost 12lbs, my goal was 145 to 150 for 90 days taking it. I lost 25lbs after 90 days.

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August 6, 2014 9:51 PM

Review by kjj0985:

User Rating:  
   
10

Hello. I'm a 28 year old female standing 5'3". I went to my doctor on 7/31/14 and was prescribed phentermine 37.5. At the office I weighed in at 275 lbs.! I started taking the medication on 8/1/14 (half a pill to see how it would effect my heart rate. I have hypertension). On 8/2/14 I weighed myself and the scale read 269.6. I only took half a pill that day, too. This morning, 8/3/14, I weighed in at 265 on the nose! I've been overweight since the age of three and remember being on diet pills at the age of nine. I've tried it alI. As an emotional eater who needed a miracle, all I can say is thank God.

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August 3, 2014 5:46 PM

Review by baby weight:

User Rating:  
   
10

I need to lose 30 lbs. I tried every thing, even the HCG diet. I was so hungry on that diet, it made me gain more weight. I tried phentermine 37.5 mg 7 days ago, and I am down 5 lbs. the first day I took it, I didn't eat all day long. It was weird and scary at the same time. I just wasn't hungry at all. My energy level was at the highest I ever felt. I had to keep moving. The next day, my body started getting use to the pill. I don't night snack any more. My last meal is around 7pm. If I start exercising I will probably lose more weight faster. side effects: thirsty all the time, but that helps me to get my 8 glasses of water intake. Sometimes I feel kind of emotional. that's about it.

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August 3, 2014 12:05 AM

Review by Jake Douglas 1978 (taken for less than 1 month):

User Rating:  
   
10

Started taking phentermine 37.5 on 7/24/2014 @ 282lbs. One week later on 7/31/2014 down 10 lbs to 272. I am eating 2000 calories per day and exercising daily 3 days cardio, 3 days strength. Pros: helps control my appetite, no late night snacking. Cons: dry mouth.

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August 1, 2014 8:50 AM

Review by tattooprncess33 (taken for less than 1 month):

User Rating:  
   
9.0

I started taking phentermine on 7/18/2014 and as of a week later 7/25/2014 I lost 8 lbs. Dry mouth has been my only side effect.

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July 30, 2014 4:13 PM

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