Skip to Content

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, ...show all 20 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.

Filter by:

User Ratings

10
   
53%(783)
9
   
23%(331)
8
   
12%(169)
7
   
5%(65)
6
   
3%(31)
5
   
3%(32)
4
   
2%(18)
3
   
1%(13)
2
   
1%(10)
1
   
3%(34)

Phentermine Rating Summary

8.8/10 Average Rating

1486 Ratings with 1463 User Reviews

What next?Compare all 47 medications used in the treatment of Weight Loss.

Reviews for Phentermine to treat Weight Loss

Sort by:

"I started adipex generic phetermine 37 on Tuesday at 9/20/16 at like 6 pm first mistake..... so I was up all night literally I didn't sleep actually I haven't slept more than a couple hours at night all week definitely lots of side effects heart beats abnormally sometimes I also feel very alert I took my 2nd dose 9/23/2016 in the morning starting weight was 223lbs I'm at 213 today 9/26/2016 so I lost 10 lbs in 6 days I get nauseous by the smell of most foods I can barely eat I have absolutely no appetite I have major constipation but I'm loosing weight though. So my goal is ultimate goal is 160. This is my 2nd time on the medicine and I lost about 30 lbs the first time back in 2012 so wish me luck I will try and update again Soon"

   
10

Twentyfine! (taken for less than 1 month) September 27, 2016

0 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"50 yr old woman, 5'6"...last weigh in: 206 lbs. I had gastric bypass surgery in Feb. 2009 and within a year lost over 90 lbs. I kept the weight off and maintained well until 2012 when I started school full time while also working full time. I was eating on the run for 2 1/2 years ..gained 40 lbs. I started phentermine this morning and omg! The energy!! My plan is to exercise 3 days a week, stick to a moderate meal plan (I made a list of DON'T EATs) and drink a gallon of water a day. I want to get rid of those 40 lbs and maintain a healthy way of eating. I'll post again when I weigh in on 10/8. I have a feeling my clothes are going to tell the story before then. I'm excited!! Good luck everyone."

   
8.0

Shelley MT (taken for less than 1 month) September 26, 2016

1 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I started phentemine on september 15 and As sep 23 I lost 8 lbs in a week I'm so happy I do have some side affects I'm always thirsty and I get constipated but after all is great it gives me energy threw the entire day I'm less hungry my start weight was 185lbs and now I'm at 177lbs looking forward to lose 50lbs more I exercise at least 4 times a week for at least an hour"

   
10

Lizabeth22 (taken for less than 1 month) September 25, 2016

3 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I have been taking the 15mg dosage and I have to say that through all of the dieting products and programs that I have been on, this drug has really helped me the most. I see that a lot of the people start out on the 37.5mg, but my doctor asked me if it was my first time taking phentermine and that if it was then he was going to start me off on the lower dosage because the side effects can be a little much at first, and then if need be, he'll take the dosage up. Its been 1 month (8/23-9/23) and I've lost 15 pounds( 294-279). I increased my cardio and started weight lifting and went "cold turkey" on bread, rice, pasta and potatoes. I'm loving the results and the fact that my cravings are now controlled."

   
10

MaggieDC422 (taken for 1 to 6 months) September 23, 2016

3 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Just wanted to know if there's before and after pics and if this works as well as 37.5"

Sassy love (taken for less than 1 month) September 21, 2016

2 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Today was my 1st day taking this pill. I will post again soon to see what happens. I have to lose about 20 lbs before trying to get pregnant. I weigh about 225lbs, due to injury and inability to vigorously exercise. But I will also begin my at home chair routine today as well to see if this works. So far this pill causes me to be sleepy and a bit loopy, and I'm drinking lots of water."

Nbe17 (taken for less than 1 month) September 21, 2016

0 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"This is the second time I have gone on Phentermine 37.5 mg. I took it back in 2013 on and off for 3-4 months and lost about 22 pounds. I am 5'2" and weighed about 156 when I started, 134 when complete. My big mistake after going off it was to start eating like I did before starting. Being menopausal, it's so easy to eat whatever looks good. My best advice to everyone is to remember that once you go off of it, you HAVE to alter your old eating habits or you will have wasted your time. Now I'm back on it again this year, almost done now. This time I went from 153 in April to 128 now, and I'm going to work hard to stay there. My worst side effects both times were dry mouth and constipation."

   
9.0

Chikklitt (taken for 1 to 6 months) September 19, 2016

18 users found this comment helpful. Did you?   Yes   No Report as inappropriate

Fastin (phentermine): "Just bought them today 9/16/2016 feeling a little optimistic for all the different reviews, but definitely worth a try.. hopefully Fastin -Xr can help me loose weight... I will write another review and rate this weight loss pill in 2 weeks from today.."

Jsaint September 16, 2016

7 users found this comment helpful. Did you?   Yes   No Report as inappropriate

Adipex-P (phentermine): "I'm 5'5" 240 lbs. after years of exercise and dieting I just could not seem to lose more than a few pounds. My doctor and I decided I should try Adipex. I just started taking it yesterday (9/15/16). I've noticed a few side effects even just with the first dose. I have a bit of a dry mouth and it has caused insomnia, and a bit of jitteriness too. Granted it was my first pill so I'm hoping these will subside after a few days. It has curbed my appetite and I've noticed an increase in energy. Now I'm not sure if it was due to the medication, but by 5/6:00 I started to feel like I was crashing a little bit. I don't want to give this a rating yet being as I just started, so I will update at a later time."

RMPRN September 16, 2016

14 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I just started phen 37.5 today. I've been releasing water like crazy!! However, I really do not have an appetite, I ate a protein snack and that's about it. My goal is to lose 70lbs, my starting weight is 268. I just want to be under 200. Wish me luck!"

Butterfli78 (taken for less than 1 month) September 13, 2016

12 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Need to lose 40lbs"

Stopit25 (taken for less than 1 month) September 13, 2016

1 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I started to take this drug for weight loss after being wounded in the middle east, the extra weight from hospital stays were just too much on my replaced part. I took the medicine a little over a year cycling off and on with ekg etc under my doctors super visionice, well needless to say the last few months I have been having all kinds of weird problems, complete numbness in my legs to the point I could not feel cuts deep cuts, I started to lose balance continuous falls and progressing symptoms,(ie. Memory loss, urinating on myself, clumsiness) the list is enormous. So to make this review a bit shorter, after going blind in one eye from optic neuritis, and losing the ability to walk I was image, and an LP I have MS and leasions all over."

The Ranger (taken for 6 months to 1 year) September 8, 2016

4 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"This is my second round with Phentermine. When I took it about 2 years ago, I dropped 17 pounds in 4 weeks; felt super energized and worked out. About 3 weeks ago, I was tired of being tired again and went back to the doc to get back on phentermine. I have to say, that, while I had struggled with yo-yo dieting and emotional eating, plus being really active versus super lazy for quite a while now. Long story short, this is week 3, I have lost 10 pounds (5 ft 3, started at 157.8, down to 147.8), am doing nooo emotional eating whatsoever, feel energized, often have to remind myself to eat, eat way healthier again, and have started exercising yesterday again. I just know, I will keep it up this time and get down to 120."

   
10

pinkwarrior66 September 3, 2016

39 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Morning everyone."

   
10

Lisa. (taken for 1 to 6 months) September 3, 2016

2 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"My doctor prescribed Phenteramine 37.5mg the last week of April 2016. I have always eaten healthy but not enough time to live in the gym and hectic work schedule it's almost impossible. I started off weighing 267 lbs it was higher than that but couldn't get it to go any lower. It's almost four months later and I am down to 243 that's only 24lbs I was hoping to have lost a lot more than that from reading other post. I am not letting that discourage me I am making healthy life choices for permanent weight loss. I go back to see my doctor in a few weeks for a follow up and cool off period. Wish me luck."

   
10

Strangemagic (taken for 1 to 6 months) August 30, 2016

16 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"My first day was awesome, I'm a local truck driver and constantly climbing in and out of my truck daily. Hours after taking first pill I had so much energy that my Co-workers wanted to know what got into me today. I have bad eating habits and on my second day on pill. I no longer desires fried chicken and rice, or French fries which I ate everyday, hamburgers and drinking up to 6 cans of cokes. My taste buds are grill food and light salad and fruits. Only side affect at the moment, I have a lot of gas. I have no choice but to lose 60 +pounds because of my bad knees."

   
10

Fat momma (taken for less than 1 month) August 27, 2016

26 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I use only 15 mg (doc prescribed 30 but I could not sleep at all with 30 mg, also it was so strong I did not have appetite at all and I would take only 300 calories per day if that much).So 15 mg works for me. I count calories I do not fo over 1400 per day, I run/walk 30 minutes per day, drink one gallon of water and eat everything in small portions like 5x per day. My snack is apples or almonds but i also eat sandwich once in a while or spaghetti or rice. The only thing I do not consume is chocolate or any other sweets. My carbs come from fruit or baked potatoe or corn... I went feom 246.5 to 229 since August 1 ( so in 25 days almost 18 lbs). I will probably lose few more until monday so I think total.of 20 lbs per.month is great."

   
10

CC2 August 26, 2016

44 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I Have been on this medication for 7 weeks along with doing the slim plate program. I exercise at the gym 3 days a week and my off days I walk a mile. This is not a miracle drug as with any weight loss you have to watch your food intake. I weighted 164 pounds 7 weeks ago,and I'm at 147 now. It has helped a great deal with controlling my appetite. I have tried it all,but this is working and I'm feeling much healthier."

   
9.0

NanaDeborahW August 24, 2016

23 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I got hives from taking phentermine. The itching is unbearable and won't go away, even weeks after having quit taking this horrible drug. Thousands of other people have reported the same reaction online -- which I discovered after it happened to me too. It's not worth the weight loss! Quit before you have this terrible reaction happen to you."

   
1.0

hivessufferer (taken for 1 to 6 months) August 24, 2016

5 users found this comment helpful. Did you?   Yes   No Report as inappropriate

Adipex-P (phentermine): "47 yr old male, 6'3, beginning weight in 2012 was 280. Before prescribing, my doc thoroughly checked for a healthy heart and cardiovascular system. If you have high bp, abnormal heart rhythm, hypertension etc, DO NOT TAKE THIS MEDICATION. Also if you have anxiety or panic attacks you may want to report those to your Dr before being prescribed Adipex. This medication requires a great deal of responsibility. It curbs your appetite so you can make lifestyle changes that are easier to maintain after you are off Adipex. This is Aug. 2016 and I now weigh 205 and feel great. My waist size went from a 44 to a 36. When you stop Adipex your energy level will drop, if it doesn't level off after 2 to 3 days, have your doc check your thyroid again."

   
10

Batman1969 August 24, 2016

29 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Male 35, 6'4", 299lbs. I said I was going to report my progress in a week. But I had to report this. It has been 48hrs and I'm down 4lbs. My routine started at 10am when I took the pill. Worked out for 30 minutes. Cereal for breakfast. A shake for lunch and grilled chicken breast for dinner. No juice! Instead, water with lemon slices. Lots of it. I'm experiencing the dry mouth which cause me to drink lots of water. I'm keeping the review neutral for now. Overall goal is to drop 60lbs in 2 rounds. First round 30lbs by 9/22/16. I will wean myself of the pill by taking it every other day for the second round 30lbs by 11/22/2016. I'm well on way!!!! Stay motivated guys..!! Don't quit..!!"

   
6.0

dwaynect (taken for less than 1 month) August 24, 2016

22 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Was prescribed phentermine 6 years ago it was amazing - went from 165 to 130 in about 3 months and able to keep it off, then after losing my husband to a three year cancer battle I just gave up. In last 4 years I have watched scale creep closer to and then pass 200. I have to get weight and physcial well-being back on track NOW! Just turned 53 last week-and at 5'3 / 220 lbs., I am miserable. I've set my mind to this, picked up prescript this afternoon, starting first thing tomorrow. We are going to Cancun in Jan so need to work my butt off w/help of Phentermine to drop this weight (not sure I can get down to 130 that quick) keep up with my kids on our adventure! I rated it 10* because of previous results and positive thinking!!!!"

   
10

jakummerle (taken for less than 1 month) August 22, 2016

27 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Hello! I'm 5'2", 149lbs. And I'm on day 4 of phentermine 15mg. The only side effects I've had are mild dizziness, and hard to sleep before 11pm even tho I take it as early as 7am. My cravings are completely gone! But, i haven't lost any weight! The energy feeling comes and goes, ive actually taken a nap once.. I'll try to keep my updates current."

   
4.0

Ju88 August 22, 2016

15 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"I officially started this medication on Aug 16 and weight was 274. I am 53 ,Male, 6'2" . I will keep this updated every week.. I wake up, drink 16 oz of water with 1 pill, I walk 5 miles every morning, after my walk ,I make a protein shake of Almond milk, fruit, protein and honey. I try and drink approx 150 oz of water a day, I eat every two- two and a half hours ,180-300 calories per meal while trying to stay between 1500-2000 calories a day. Next week I will begin a workout program at the gym. I will be weighing myself once a week ,each Tuesday morning and will post here all of the results,good and not so good if warranted."

   
8.0

Bluueyezz August 19, 2016

17 users found this comment helpful. Did you?   Yes   No Report as inappropriate

"Second day taking it. Today I felt weird no energy just concentrated on things more. No appetite but made myself eat something small and healthy every three hours. I have 110 lbs to lose I hope this helps I walk at night after work and gym in morning for a hour."

   
5.0

Anonymous564 August 19, 2016

2 users found this comment helpful. Did you?   Yes   No Report as inappropriate
Page 1 2 3 4 5 6 7 8 9 ...Next
Hide