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User Reviews for Phentermine

Also known as: Adipex-P, Atti-Plex P, Fastin, Ionamin, Lomaira, Obenix, Obephen, Oby-Cap, Oby-Trim, Panshape M, Phentercot, Phentride, Pro-Fast HS, Pro-Fast SA, Pro-Fast SR, Suprenza, T-Diet, Teramine, Teramine ER, Zantryl …show all 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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Phentermine Rating Summary

User Ratings
10
   
52%(986)
9
   
22%(405)
8
   
12%(228)
7
   
5%(85)
6
   
3%(47)
5
   
3%(55)
4
   
2%(25)
3
   
2%(23)
2
   
1%(16)
1
   
3%(47)
8.7/10 Average Rating
1917 Ratings with 2024 User Reviews

What next? Compare all 39 medications used in the treatment of Weight Loss.

Reviews for Phentermine to treat Weight Loss

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"Two weeks now on phentermine and I've dropped 12 lbs. I've also been meal prepping and limiting caloric intake to about 1000 calories a day. Lots of protein, moderate carbs and under 20gm fat a day. I'm not hungry and I have enough energy to get through the day. Started at 253 lbs and goal is 170-150. The first day was rough...really bad headache and jittery. But since then, I've been fine. Lots of water as well as soluble fiber to keep the constipation at bay. Yesterday I put on pants I haven't worn in two years. I miss sugar, but not craving it. It's also fun to be cooking again! My peers see my meal prep and think I've gone out for take out. This med is the kick start and motivation I need to keep going. I'm super excited to see what I can keep doing!!"

   
10

dot2dot (taken for less than 1 month) September 14, 2018

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"4'7" and I weighed 193lb when I asked the doctor for help, two days ago. He prescribed this and I began this morning. I'm 185lb today and while I was jittery this morning, I mowed the lawn and got stuff done. Things I might have put off. I have chosen not to eat for a few days to detox my body. I am drinking a ton of water. After the detox and initial boost to my weight loss plan, I'm reintroducing fruit to my diet -- bananas for potassium, peaches for the antioxidant vitamin C, etc. After that, I'll reintroduce salads and greens. Then legumes. My goal weight is 120lb again, because I'm 64 and would feel marvelous if I got to that level. My goal is to be more health oriented. No more gasping for breath, no more sore knees, no more inability to bend over. I'm WAYYY to young to be this old."

   
8.0

Fatty Patty (taken for less than 1 month) September 9, 2018

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"I'm a 30 year old female who weighted a whopping 297 pounds. I was taking medication for some other health issues and started to gain weight over the next year I went from 230 to 270 in no time. I have type 2 diabetes, and other health problems. So I began taking phentermine in June first 3 days I lost 10 pounds which I knew was water weight. I had bad habits I had to stop like eating after 7pm and drinking milk by the gallons. Eating leftovers, eating mexican food etc. I've been on this medicine for 3 months and I'm 236lb to date. That's a whopping 61 pounds in 3 months. You can't just rely on the pill. You have to drink lots of water half your body weight in water. You have to measure out your portions I'm on a 1200 calorie diet and under a Doctors care. Every month I get checked If you stick with it and follow a low calorie low carb diet this medicine will work and its changed my life. I'm continuing my journey to get to my goal of 155-160 pounds."

   
10

Country girl September 7, 2018

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"I was on this diet pill back in 2015 lost 34 pounds in just two months! It was so great and made me feel so much better about myself... Well it is expensive to keep going back to Dr to get more so I stopped them and gained all of it back. I then tried it out again in 2016 and from the first day it made me feel like awful, no energy or anything. Just felt really irritable so I stopped them before I even took them all"

   
3.0

HaLo September 6, 2018

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Adipex-P (phentermine): "It was great at helping lose weight but once you come off of it, you'll gain it all right back unless you make serious changes to your diet. It helps give you a kick start but it's never permanent. Besides, they'll only prescribe it for up to 3 months at a time."

   
5.0

Anonymous (taken for 1 to 6 months) September 4, 2018

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Lomaira (phentermine): "I started this medication 10 days ago. I’ve lost 5 lbs. I’ll weigh myself again in another 10 days. I have had virtually no side effects- just more energy, which is a good thing because I have a chronic illness that causes fatigue. But no heart palps or dry mouth! I was 191 lbs on 8/22/18 and now on 9/2 I am 186 lbs. honestly, it just makes me forget about hunger."

   
8.0

Kap808 (taken for less than 1 month) September 2, 2018

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"First day cannot sleep I’m so hoping I can sleep tonight and this part wears off. Jittery my head shaking more than usual. Weight 3 pound less and that’s obviously water weight I’ve only 16 pound to lose and this works unlike some very expensive treatments I tried like saxenda weight loss injection or mysimba (Contrave in US) which cost a fortune and did nothing. It should be easy on these pink pill phentermine and hoping the insomnia and jitters go away soon I’m 52 years old and 5ft 4 and weigh 168 pounds goal is 152 pounds"

   
10

Fran (taken for less than 1 month) August 31, 2018

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Fastin (phentermine): "If you want to lose weight but also feel like you’re dying This is for you."

   
4.0

Courtney (taken for less than 1 month) August 30, 2018

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"I'll be hopefully starting this medication tomorrow! I expect successful results within this 30 day trial. I have already planned out diet, and exercise. H; 6'1 SW; 321 GW; 221 (-100 lbs.) Diet : - Mediterranean Diet - Water + Vitamin Water - NO BREADS - Minimum dairy intake Exercise: - 30/45 minute workouts 3 times a week (Starting Goal) with basic brisk walking, and cardio. I expect a strong bolt of energy, so I am going to try my best to try and be wore out by the end of the day to get a good eight hour rest. Overall, I'm excited for the results and experience ** I'll update in a month**"

Unchartedteritory (taken for less than 1 month) August 28, 2018

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"Starting weight 243 lb. Weighed in today, approximately two months later at 215 lb. I have so much more energy, and feel better about myself. I'm down two pants sizes and don't eat near as much as I did, nor do I eat out very much anymore. My goal weight is 180 lb. the only negative side effects I've experienced are some palpitations, extreme dry mouth, increased urination, and some hair loss off my head... I have thick hair so I'm not too concerned. I don't work out, but I have a crawling baby and have taken on a second job."

   
9.0

Ammi (taken for 1 to 6 months) August 27, 2018

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Adipex-P (phentermine): "I am a 48 year old female when have been battling weight issues for over 10 years. I stopped smoking cigarettes 3/3/13 and my weight took a jump up for the worst. I lost my will power after gaining so much weight. I began to stay in the house and withdraw from social events because of being ashamed. I began taking adipex 8/15/18 weighting 234lbs. As of 8/22/18 I weigh 227lbs. THAT'S 7LBS IN 7 DAYS! Today, 8/26/18, I haven't weighed myself but I'm sure I've lost more. I have no appetite or cravings. Now that I see results, there is no turning back. Just wait until I as exercise, oh boy! Side effects are slight headaches, jittery, sweating and loose stools. The jitteriness give me energy so I don't mind."

   
10

Thank God for his grace and me (taken for less than 1 month) August 27, 2018

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"I started 37.5Mg on 7/2/18. I weighed 217lbs, I am 5'4" and just turned 57 years old. Today is 8/18/18 and I weigh 212 pounds. I am very discouraged... I also changed my diet to exclude all meat and my diet consists of mainly tofu and mushrooms ...salads..hummus. I do have a sweet tooth but keep my total calories between 1000 and 1200 a day. I have noticed that I get hungry very late at night so I started dividing my food up so that I could eat a little in the evening and not go over my calories. I am due to see my doctor on Oct 2nd which is three months after beginning the pill and will go from there. I will continue with the phentermine until that time and will give another update then. I had such high hopes after reading the reviews. Guess for me there is no magic pill and this will be a marathon not a sprint."

I Keep trying (taken for 1 to 6 months) August 19, 2018

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"56 year old female never been this heavy 200 lbs @ 5'5" I want to lose 50 lbs. I started taking the medication two days ago with the side effects of dry mouth and feeling a little jittery it's nothing I can't handle. My appetite is gone! I have to make myself eat! Drinking tons of water! Can't wait to see the old Me!!!"

Anonymous (taken for less than 1 month) August 18, 2018

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"Retired early at 55, and used to walk like crazy in my job. Never had a weight issue until I left!!!! I went from 132lb to 160lb!! Been 4 months now and I am down to 136!!!! Well on my way!!!"

   
10

Shelly (taken for 1 to 6 months) August 4, 2018

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"I was prescribed phentermine for a total of six months which I know is longer than many recommend but my doctor approved it and I trust him and have not seen any poor health side effects. Regardless I have lost almost 90lbs in those six months (from 294lbs to 205lbs) with a large change in diet and exercise but mainly diet. I have noticed the pills doing less for me and am in the process of getting off of them but over those months the only effects I had were minor lightheadedness and constipation. I’m confident that even when I’m completely off the pill I have been able to develop the habits to keep the weight off and continue losing weight. Without phentermine I don’t think I would’ve had the kickstart I needed in the beginning to be where I am now."

   
10

Sarah (taken for 1 to 6 months) August 2, 2018

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"Started on the 37.5mg pill last week. The pharmacy didn't have the capsule in stock. I assume there is no difference. It has now been 9 days since I started. I'm a mid 50's male and my starting weight was 195lb. Weighed in today at 186lb. I'm impressed with this and really enjoy the energy I have. I actually hit the gym twice this past week. Hopefully the trend continues. My goal is 170lb which I believe is easily attainable."

   
10

Snake (taken for less than 1 month) July 21, 2018

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"32y/o woman here. After having my first daughter my weight sky rocketed from 165lb to 185lb then it kept going, 203lb was my weight in on June 14th. I had my check up this week (July 17) I had lost nearly 7lbs. My doctor put me on it for another 3 months. I have noticed I'm thirsty all the time, never hungry. I also have had pretty bad insomnia, but it's not affecting my mental or physical state. I have not really been dieting per say, just eating way less. I don't think about food 24/7. The first day it made me jittery like I had a few energy drinks. I also feel like I have to get up and do stuff or else I'll go crazy. This stuff does work, but you eventually end up needing to force yourself to eat."

   
10

Beboo (taken for 1 to 6 months) July 20, 2018

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Adipex-P (phentermine): "I've been taking adipex for 2 weeks. My starting weight was 80kg (171lbs). In the first week I lost almost 5kgs (9lbs), but the second week I haven't lost anymore. I have also started exercising 5 times a week so it could potentially be changing fat into muscle. Prior to starting adipex I wasn't exercising at all. I will update in another 2 weeks where results should be more visual. I have had some side effects including dry mouth, occassional heart palpitations, occassional long distance blurred vision."

   
8.0

PurpleWaterfall (taken for less than 1 month) July 19, 2018

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Adipex-P (phentermine): "At the age of 37 and after 3 children, up and down weight loss issues I finally hit my all time high weight at 250lbs. I started taking Adipex not thinking that it would work but surprisingly it did. After taking the medication for the 90 days I lost a total of 40lbs. The medicine made me not want to eat and also left me with a very dry mouth daily. I also did 3 miles on the treadmill daily. I still have the other 10lbs to go and is very sad that adipex is only for 3 months. Overall the best weight loss drug I have ever tried."

   
10

Lynn (taken for 1 to 6 months) July 18, 2018

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"My Dr decided to start me on Phentermine (37.5mg) because I'm morbidly obese and do not want to go the surgery route. Today (7/9/18) I took my 1st pill at 1030am. From reading your reviews I hope this wasn't too late in the day, and won't keep me up tonight. I'm 5'5 weighing in at 280 pounds..I have a 20 day supply. That is not covered through my insurance. Hoping to lose 15 pounds in these first 20 days.. Wish me luck!!"

   
5.0

Chrissy (taken for less than 1 month) July 9, 2018

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Adipex-P (phentermine): "I have always been 130 lbs, but since having my last child I went up to 171lb! I have tried losing weight but nothing was working then I started steadily gaining to my current 184lb (I am 5'4"). Doctor checked my thyroid and all is well. I asked my doc about this medication and if it was right for me. I will see him every 30 days, with a 3 month limit on this medication. I have been on this med for maybe 2 weeks and have not weighed myself yet, but I have definitely noticed a change in my appetite. I no longer want to snack at night, and I am not always hungry. The first day I felt slightly jittery, and my mouth was so dry. Now I no longer feel jittery, my mouth is dry for about 3 hours after taking. I don't feel like I have a ton of energy, but when I get home after working a medium paced 8 hour job I am really tired when I get home. I have been keeping a close eye on my food and water intake. I am curious if I have lost any weight."

   
6.0

momoftwo (taken for less than 1 month) July 9, 2018

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"I just finished my 1st bottle of #30 37.5 mg pills yesterday, 7/6/2018. I am a 46 year old male I weighed 334 lbs the morning I started taking them and this morning I weigh 309 lbs (25 lbs lost). I started taking them because I was very athletic in my younger years and my knees are worn out I needed to lose weight before having a total knee replacement on both knees. I feel so much better that I am able to postpone the operation and I plan to lose at least 50 more lbs. If you start taking them do it on the weekend. The pills are a little intense at first, like drinking too much coffee. Makes you a little spacey too. Also keep track of your calories. I was eating too little and it was making the side effects worse. The side effects wear off after a week or two and you do start to get your appetite back but it's a lot easier to manage portion sizes. I get sinuses and a runny nose and this drug works better to clear that up than anything else I have ever taken. Really happy with this."

   
9.0

Hitower71 July 7, 2018

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"I have been taking phentermine 37.5mg since March 18, 2018. As if today July 6, 2018 total weight loss is 53 lbs. My starting weight was 250, today 197. I have severe arthritis in hips knees and ankles so I can't do any workout programs. I have added in a strict 1200 calorie, high fiber, low fat, low carb, and low sodium diet. The only downside I am experiencing is severe constipation. I have to take at least 1 women's laxative a week. Other than that I am pleased with my results!"

   
7.0

TORCHWOOD (taken for 1 to 6 months) July 6, 2018

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"I started today hoping to lose 20 lbs in a couple of months... FYI I had vsg (Gastric Sleeve) but I'm in a stall at the moment. I had phentermine before surgery and they worked very well for me let's see this second time around..phentermine 37.5"

Tita81 July 2, 2018

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"68-year-old female. I have RA which makes it hard to exercise, thyroid issues, post-menopausal and I take prednisone. Almost impossible for me to lose weight. Started on phentermine 15mg six days ago and have lost 7 pounds--from 170lb to 163lb. Need to lose 16 more. Plan to eat about 800 calories/day with one day @1200. The first day I had a headache and only slept 3 hours that night. No side effects since then except sleepiness in afternoon. Curbs appetite but still get hungry. A little food satisfies me. I took Redux and it stopped working after one month. I plan to take this three weeks on, three weeks off if that happens."

   
10

anniess (taken for less than 1 month) July 1, 2018

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