Skip to Content

User Reviews for Phentermine to treat Weight Loss

Also known as: Adipex-P, Lomaira, Atti-Plex P

The following information is NOT intended to endorse any particular medication. While these reviews might be helpful, they are not a substitute for the expertise, skill, knowledge and judgement of healthcare practitioners.

Phentermine Rating Summary

User Ratings
10
   
52%(991)
9
   
21%(407)
8
   
12%(231)
7
   
5%(87)
6
   
3%(48)
5
   
3%(56)
4
   
2%(28)
3
   
2%(23)
2
   
1%(15)
1
   
3%(54)
8.7/10 Average Rating
1940 Ratings with 2241 User Reviews

What next? Compare all 26 medications used in the treatment of Weight Loss.

Reviews for Phentermine

B May 25, 2020

Lomaira (phentermine): "I do have ADD and this is a low grade amphetamine, so for someone who doesn’t have ADD these may work. I am not sure why my doctor chose to put me on these as they do the complete opposite for me since I do have add they stabilize me rather than stimulate. The side effects include insomnia, high BP, lower appetite and boost energy. I am not a person who naps, I can run on 5 hours of sleep, and these made me SO TIRED after taking them. They didn’t give me high BP, they didn’t cause insomnia, they didn’t give me energy, and they did not lower my appetite. They did give me brain fog. You’re apparently supposed to lose 2lbs per week on these pills, my doctor had me on one 8mg tablet, then wanted to bump it up to one and a half, I did not continue the meds because even after a month, change in diet, and consistent working out and walking, they still did nothing for me. I started these at 226 and have actually been fluctuating between 237-230 since taking them. I do not recommend."

1.0
   
Kush · Taken for less than 1 month April 16, 2020

Fastin (phentermine): "Start taking Fastin yesterday .. Had increase heart rate and high blood pressure ... Felt like I was getting a heart attack"

Lorry · Taken for less than 1 month March 14, 2020

Lomaira (phentermine): "I did loose 5 pounds in one week, however taking Lomaira 8 mg made me severely constipated with severe abdominal pains , I ended in the hospital for 2 days, I was fully impacted according to MRI & Catscan "

3.0
   
Danii92 · Taken for less than 1 month March 8, 2020

"Started 2/21/20 at 214lbs. I’m 5’2 I’ve been taking it for about two weeks and I’ve already lost 14 down to 200 I’m so happy totally happy goal weight is 160"

10
   
April March 8, 2020

"So i just started a half pill of phetermine 2 days ago I feel really wired and a little discomfort here and there in my chest is this normal and do side effects wear off after so long???"

7.0
   
Cook · Taken for less than 1 month March 7, 2020

"Started 3/6/20 SW 190 3.75mg. will update in two weeks. Hopefully will loose 20lbs."

BELLS · Taken for 10 years or more March 1, 2020

"I had been taking this pill for almost 10 years I lost the weight I wanted and kept it off, no caffeine, I did drink never bothered me 2 years ago my new dr took me off I have gained 61 pds back. I'm have talked him do letting me try it again to rid myself of extra weight since I'm am so depressed because I can't even sit down and get up off floor, so yes it a little jittery at first but you shake that off by doing stuff like cleaning house which was my busy thing to do"

10
   
JJ · Taken for less than 1 month February 26, 2020

"Started the meds 15 mg caps today weighing 285lb, will post in a week or two to let you know if there has been any progress. I can say I am not hungry, did get a slight headache which I took IB for. I do feel high as a kite though. I wouldn't say I have tons of energy but definitely feel high. GW220# female 38yrs 5ft4in"

5.0
   
Cyndi · Taken for 1 to 6 months February 22, 2020

"Was 215lbs. now 179.5lbs. my goal weight is 140lb. I lost 36lbs. in the 3 months that I took Phentermine. I did not feel hungry and had energy. I did have dry mouth and had trouble getting enough sleep. I feel that it is well worth the side effects. I drank plenty of water, and would take OTC meds to help with constipation. I also would recommend taking the medication as early as possible so that be the late evening you can sleep. I have been off Phentermine for 3 weeks now and am having trouble losing. I have not gained any weight. My doctor put me on Wellbutrin to continue to help me lose weight. I have less energy, and it really doesn't help much with hunger. I am doing intermittent fasting and hopefully I can lose enough until I can get back on the Phentermine in 5 months."

10
   
ChubbyMomma · Taken for less than 1 month February 21, 2020

"My body demographics: age 28, 5’1”, Starting weight as of 2/18 was 180lbs. I breastfed my child til 10mo then instantly gained 30lbs after I stopped (warning to all breastfeeding moms!). I would exercise, went on every extreme diet you could think of for weeks and sometimes months at a time, and usually could only manage to shake about 2lbs. After just three doses of this medicine, I’m already down 6lbs. Yes, there are side effects, but it’s worth it to me. I definitely have the dry mouth and headaches, but it makes me drink more water. I was incredibly addicted to Mt. Dew. Since I’ve started, all I want is water. I hardly have an appetite. I eat less than half of what I had been. It’s a miracle in pill form!"

10
   
Michelle · Taken for 1 to 2 years February 16, 2020

Adipex-P (phentermine): "Dooo NOT TAKE THIS MEDICATION!! Yes it works for weight loss but it’s not worth the long term side effects . You will end up addicted to this medication, it is a stimulant that increases your dopamine and then depletes it once you stop which makes you severely depressed when you quit . If you have anxiety or might be bipolar don’t take this medication as it can make you very manic , euphoric , and give you a false sense of invincibility . I’m dealing with the effects 10 years later after taking it . I made stupid choices when I was on this medication I regret it everyday of my life ."

1.0
   
SheilaD February 11, 2020

Adipex-P (phentermine): "Started Adipex 11 days ago, weighed myself today and have lost 11 pounds. Started at 181 and am now 170. Going through menopause and have spent the last two years in the gym unable to lose a pound. Once menopause hit I gained so much that my BMI for the first time put me in an overweight catagory. I asked my Dr. if there was something I could take that helped the work that I already do, actually work. Goal weight is only 155, I'm 5 feet 10 inches tall. The first week she had me take half a pill a day, beginning of second week a full pill. The first day I had a bad headache. I have dry mouth from taking it, but not so bad it's unbearable. I drink a ton of water. It took away my desire to drink coffee and it never gave me the bad coffee withdrawal headaches. I'm eating anywhere from 600-1200 calories. Change your eating habits while on adipex. Take those few months to get your body adjusted to healthy food choices so that it doesn't crave the bad stuff once you're done taking the pills."

10
   
HH · Taken for 1 to 6 months February 9, 2020

"SW 283, GW167, CW223! Lost 60 lbs in a little more than 4months. Take phentermine about 5 days per week. Use MyFitnessPal. Walk and hike a lot. Weight train a little. Try to eat as much protein as I can and be carb conscious. So glad I don’t have significant negative side effects. They were worse during the first week, but now am just thirsty and have mild to moderate constipation. I’d say it’s worth it. And if you can, push through the first week of sweaty palms etc. unless of course it causes significant medical concerns. Also, have adopted a bit of a zig zag pattern to calorie consumption with one very low calorie day per week. This is working for me. Glad to be more than half way to my goal!"

9.0
   
49ersFan · Taken for less than 1 month February 9, 2020

"I'm a 37yr old male 6'3 and 375 pounds. I'm on my 2nd almost 3rd day of taking phentermine 37.5mg dose. I will say I am no longer hungry but do eat once a day. The worst thing about it is that I can't sleep. I have a very busy work life and was hoping burning energy off would help but no. I can't wait to go into doctor in April and see how much weight I've lost. My goal is to lose 75 pounds by the end of year."

9.0
   
Firefly · Taken for less than 1 month February 5, 2020

"I'm gonna start taking phentermine 15mg on Friday I currently weigh 287 my goal weight is 130/135. I hope this works for me I'm tired of being over weight I want to be able to go to a nice clothing store and get that nice dress without the lady saying oh I'm sorry we don't have that in your size here"

Lucero · Taken for 1 to 6 months February 5, 2020

"I started taking phentermine 11/04/2019 the first month I lost 16 pounds and the 2nd month lost 14 I recommend this pill it really works.I tried to lose weight with diets only but didn't have any success until I tried phentermine."

10
   
ANicole February 4, 2020

"I tried to be more active in small ways and started intermittent fasting. I was able to lose 8lbs before being prescribed phentermine. This put my starting weight when I began phentermine 232lbs. I started on 01/11/2020 and as of today 02/04/2020, I weigh 214lbs. That’s 18lbs down. This time around has been completely different. I swear by intermittent fasting, I drink green tea and water only (approximately 96oz), I mainly eat fruit, veggies, trail mixes and seafood. When I feel hungry between meals, I eat an apple or a serving of trail mix. I also workout 45-50 minutes 5 days a week in addition to walking my dog 1/4 of a mile on my lunch breaks. I can truly say that my weight-loss is not just because of the phentermine. I put in a lot of work! That’s the true key to success. Phentermine is not a magic pill but it’s certainly an aid to help keep you on track. I’m working hard to create healthy, lifelong habits. Good luck everyone!"

9.0
   
Anonymous · Taken for less than 1 month February 2, 2020

"On 1/31/2020 I weighed 207lb at 5’8. It’s now 2/2/2020 and I just weighed in at 201. Six lbs in two days!! I’m on phentermine 37.5mg once a day. I’m super excited to share my journey as I continue taking it!"

10
   
Laurel · Taken for 1 to 6 months February 1, 2020

"I started on phentramine at the beginning of December 2019. I was worried about having bad side effects due to not handling caffeine very well. (Makes me feel sick). I took half a pill for the first 8 days, and after would take half a pill at 7:30am before work, and the other half around 9:30am. I lost 15 pounds in the first month. This second month has slowed down, but I am down 7 pounds the 2nd month. The second month I was given capsules and not the pill, so I haven’t been able to split the dose like before. The side effects I have had are dry mouth, occasional headaches, and occasional constipation. I would say that overall the side effects aren’t too bad though. I plan on starting to exercise a few days a week next month to see if it will help me loose more."

8.0
   
AG · Taken for 1 to 6 months January 31, 2020

"I was prescribed phentermine as a way for me "boost" loosing the weight I had gained while on antidepressants. At the start of taking the medication, I must say I did feel a little shaky or jittery for about 1-2 days but then all was fine. My energy was high and my hunger was suppressed. I even had to remind myself to eat! I was averaging loosing 1 pound a day! I did incorporate moderate daily or every other day exercise and watched what I ate and the weight kept coming right off! Within the first month, I had lost 16 pounds and dropped a pant size! I only took phentermine for three months and then stopped. In total, I lost 34 pounds and dropped two pant sizes. I absolutely recommend this as a short term weight loss booster for anyone needing to loose some weight quickly."

9.0
   
Skinny111 January 29, 2020

"I have been on these phentermine for 4 months 115 mg a day amazing energy. I wanted to fit into my suit that I haven't worn in a while and see how far I could take this. Boy did I take it far basically way too thin for all my suits and people at work in my wife call me skinny and I've lost enough they tell me. I don't even understand where they're coming from as I haven't heard that my whole life. Sure there are side effects, it affects your sleep, somewhat dry mouth shaking and sometimes, I had dizziness before but that's gone."

10
   
Bloomfever2002 January 28, 2020

Adipex-P (phentermine): "I have been on Adipex for two weeks. My doctor suggested it to help me lose some weight. I was 200 pounds at the start. I am now 194lb after 2 weeks. I take a half a pill a day. I work at a desk all day and would have issues with snacking all afternoon. Now I don't. I force myself to eat some fruit every afternoon or a protein shake. I cant eat a full meal because I feel fuller faster. I have more energy . I have had dry mouth but drinking water is a big help with that, and I drink a lot more water. I do have some heart racing at times but the more water I drink the better that is. Which is good because it did throw me into a few panic attacks. No headaches. I did get insomnia the first two nights but I switched to taking the pill at 10 am instead of noon and that stopped. I started exercising so hope to see more weight drop off. My goal weight is 145. but Y am only taking this until my bottle is gone."

8.0
   
Cent · Taken for 1 to 6 months January 16, 2020

"I started Phentermine in January 2019 and took till April 2019. All with eating clean and consistent with a workout regimen until December 31st. I lost a total of 55 pounds. It's January 2020 and now I'm dropping 45 pounds. Start weight was 298 Current weight 242 Goal weight 175. I would love to post a pic but don't think this post will allow ."

10
   
Ahailey22 January 16, 2020

"I took phentermine in 2018 to loose weight after having my son, I only took a half dose for 3 days and the full dose for 3 days before I was rushed to the ER for shortness of breath, heart palpatations and tingling pain running down my arms to my hands and legs to my feet. I was only 31 years old and previously healthy. I have been to the emergency room 6 times last year alone, multiple doctors and medical universities since. My body has since lost the ability to control my blood pressure which is dangerously low now, my heart rate is high and uncontrollable, I have vision problems, sexual dysfunction, cognitive problems and so on. The dr diagnosed me as having autonomic dysfunction but because of more recent symptoms (vision issues in one eye migraines etc) as well as psychological symptoms (rapid cycling of emotions anger depression anxiety) I am going to see a neurologist to see if phen damaged my brain / nervous system."

1.0
   
Bri · Taken for less than 1 month January 16, 2020

Adipex-P (phentermine): "I had this medication Adipex-P last year and had horrible side effects . It was like a sinus headache and muscle spasms. I lost 10 pounds and gained it all back when I got off. So Last week I decided to give it another go. I was doing good no side effects Lost 8 pounds now the side effects are coming. This time it’s different I had one muscle spasm and since so my legs have been very heavy and felt very weird and sore. I don’t know what to think about this pill. As far as weight loss it’s great but side effects yeah I’m not feeling good about them. Actually kind of scared . But if you want to lose weight go for it . My friend has been on it and has had a totally different experience from I. No side effects what so ever ."

6.0
   
Hide