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, T-Diet, Teramine, Teramine ER, Zantryl

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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Phentermine review summary

9.0/10 Average Rating

813 Ratings with 734 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 davisgirl (taken for less than 1 month):

phentermine: I went to the doctor on Friday 4/18/2014 weighing in at 213lbs. I started taking phentermine on Monday 04/21/2014 and today it's 4/23/2014. I'm already 4lbs down. I've been eating a lot less than usual along with walking everyday for at least 30mins. I have changed nothing about my diet. Excited. 69lbs more to go. I'll update you guys in 1 week.

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April 23, 2014 12:29 PM
Review by Lauren789 (taken for less than 1 month): User Rating:  
   
9.0

phentermine: I started on Phen 4/11 at 254.8 & I'm 5'7". 4 days in and I'm down to 245.4lbs. HOWEVER, my stomach growls awfully. I take 37.5 around 8:30 am after breakfast. Does anyone have suggestions on how to control afternoon snack attacks? I'm really trying to get down at least 60 lbs by 10/31!

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April 22, 2014 9:59 PM
Review by RoseColoredGlasses: User Rating:  
   
9.0

phentermine: After realizing how much weight I had gained over the course of the last year I was mortified, I'm in my early 40's, 5' 5" and weighed in at almost 190, I nearly cried. I got my blood work done and found that I am pre-diabetic and borderline anemic. So I talked with my provider and we agreed that this would be something we could try to help get my weight down. I'm taking the 15mg and this is the morning of my second day and I have already lost 2.1lbs. Moderate exercise and overhauling my diet will hopefully aid my short term goal of 24 lbs, short term being by mid June. Feeling hopeful!!

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April 18, 2014 3:31 PM
Review by KristyGutierrez: User Rating:  
   
10

phentermine: I started this medicine because I was always wanting to eat and never feeling full. So my Dr put me on 1/2 of a 37.5mg tab. It started working the same day I would eat and then I felt as if I hit a brick wall and couldn't eat anymore. Went to the Dr a week and 1 day later and the nurse said WOW you have lost 8lbs in a week and 1 day great job! I feel amazing! I had gone up in weight to 195lbs and dropped to 160lbs on my own in 7 months so they were happy to give me something to help me with the rest of my weight because I was doing all the work and nothing was coming off anymore because I always wanted to eat something! I only have dry mouth and a funny taste in my mouth.

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April 17, 2014 10:40 AM
Review by Liz985504 (taken for less than 1 month): User Rating:  
   
6.0

Adipex-P (phentermine): I've been on Adipex for 6 days now and have lost 12 pounds. I'm really happy about that but I've had constant diarrhea every day since then and have become very dehydrated. Be cautious of the side effects.

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April 16, 2014 4:46 PM
Review by TGordon: User Rating:  
   
10

phentermine: This is my second post...I started on 3/6/14 and today 4/16/14, I have lost 22 pounds. It could have been more if I just got myself back in the gym. My daily meals consists of breakfast - one egg w/cheese and one turkey link, no lunch around 2pm I have yogurt and BelVita crackers & dinner - whatever I want but no bread and I don't eat after 7:30pm. Also, I do not take the pill over the weekend! Good Luck everyone!

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April 16, 2014 2:51 PM
Review by Townsend12twins28: User Rating:  
   
10

Adipex-P (phentermine): 3/19/14 Went to the Dr and asked about starting Adipex. I was extremely unhappy with myself, I stepped on a scale a few days before this and realized I weighed 250 I have never been this big I am 5'10". I started taking the medicine and walking every day at least a mile then walking has led to jogging and crunches. I still have my Sweet tooth but not like before with the medicine and willpower on 4/11/2014, I weighed in at 232. I didn't even realize I have lost that much my goal was to lose 30 lb by July 4 and I believe I will well exceed my goal!

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April 12, 2014 4:47 PM
Review by lovingmesumME: User Rating:  
   
9.0

phentermine: I just started taking this medication on April 10, 2014. I have taken it before with little success, but I am really determined to lose this weight. I'm 5'7 251lbs and want to get down to 190lbs. It really curbs my appetite and I am choosing healthier foods. I love the way the pill makes me feel, full of energy and happy. I have not had really bad side effects other than loosing a little rest at night, but the trade off is worth it to me. Once I loose the weight I will continue on a healthy diet and exercise. Will post in a month to let you guys know of my progress!

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April 11, 2014 12:26 PM
Review by sophie94 (taken for less than 1 month): User Rating:  
   
10

phentermine: I've been on phentermine for two weeks, within the first week I lost 16 lbs without changing my diet or exercise routine. I'm about 5'8" and have a very athletic muscular build so I'm heavy anyways. I'm a size 12 weighing 211 as of last week but I can see a drastic change in my body, it's insane and a little scary how well this has worked!

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April 11, 2014 3:47 AM
Review by Anebiee: User Rating:  
   
10

phentermine: In love! I am 19 years old and my height is 5'2" and weight 170lbs the day I started 04-06-14 and I'm starting to see results. I am a single mom, work, attend college, etc. and don't have time to exercise. I'll go to the doctor May 3, hopefully I can lose at least 10lbs by that time! Good luck everyone.

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April 8, 2014 2:46 AM
Review by RetiredMilitarywyfe (taken for less than 1 month): User Rating:  
   
8.0

Adipex-P (phentermine): I was just prescribed Adipex today (FINALLY). Long story short - I was about 30 pounds overweight in 2002 when my husband was deployed to the war. I decided t use that time to LOSE WEIGHT. I got the meds, and in 5 months I had already lost 55 pounds! I was thrilled. I wouldn't send my husband a photo of me, because I wanted to surprise him. Boy was he! He stopped in his tracks and mouthed %u1E84OW Then three years later I got a brain tumor. The cancer medications, and the steroids that I had to take to try to control the tumor, made me GAIN it all back PLUS another 45 pounds! (Plus I lost my hair). Well fast forward about 8 years, I have lost 55 lbs. Doc prescribed Adipex to help get the rest off! Wish me luck!

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April 7, 2014 10:37 PM
Review by ambb: User Rating:  
   
10

phentermine: I've been on this pill starting my second month now. I lost 11 pounds in the first month without changing my eating habit a whole lot other than just drinking water and I haven't exercised like one needs to. This is my second month & I am changing everything. My fiance is also on the pill. He lost 18 pounds the first month. He drinks nothing but water & exercises daily plus eats healthier. The side effects were bad for both of us the first few days. But now we both only get dry mouth. It works! I would recommend to everyone!

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April 7, 2014 1:45 PM
Review by Alice Wonderland:

Adipex-P (phentermine): I've been on this medicine off and on for 6 months. I've lost about 30 pounds. My cycle is 1 month on and one month off. If you take it more than a month your body gets used to it. I have found giving the body a rest and allowing the metabolism to adjust without works best for long term weight loss and maintaining. I started at 180, currently at 150. I get bad side effects, but seeing the scale move and clothes fit motivates me to move on. If you exercise with this medicine it can make you nauseated and cause vomiting. Exercising first thing in the morning, then taking the medicine works best to prevent nausea and vomiting. Also, I find it important for users to change eating habits. Suggest clean eating 6 days on 1 day off.

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April 3, 2014 11:02 PM
Review by Jesi Lee: User Rating:  
   
8.0

phentermine: I'm 24 years old, I have Hashimoto's (hypothyroid) and am 5'5. I weighed in at 217 lbs on March 25th which is the day I started the medication. It's been seven days and today I am weighing in at 204, 13 lb loss. I've been primarily juicing all three meals per day. I had a full meal one weekend night and have had healthy snacks here and there such as raw almonds and avocados. I've been drinking about 1 gallon of water per day. I just worked out for the first time on day 6 so we'll see how my second week goes now that I'm burning more calories. No negative side effects, dry mouth occurs but as previously stated by everyone it's just makes the water intake that much easier.

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April 1, 2014 3:24 PM
Review by littlewalty (taken for 1 to 6 months):

phentermine: I started phentermine 3/1/14 it took about 3 days when I noticed my appetite went away. I was not exercising and when I ate I was still choosing the wrong foods, I lost weight, (like 1-2pounds), But when I decided to "get real" with myself ( excercising, elimination of sugar, flour, bread ) The weight came off. Start Weight 181 As of 3/30/14 lost 20 pounds 161!

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March 30, 2014 7:05 AM
Review by Michele chest: User Rating:  
   
10

Adipex-P (phentermine): It's my fourth post, been taking this medicine and watching what I eat been dieting since May 9th I have lost 106 pounds. I would recommend this to anybody.

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March 30, 2014 6:53 AM
Review by Shotyme (taken for 1 to 6 months): User Rating:  
   
10

Adipex-P (phentermine): I started in Adipex Feb 16th. I weighed in at 308lbs, the heaviest I've ever been. As of March 27th I am now 260 lbs and going. I run 5 miles everyday and totally changed my life style. Drinking lots of water I probably go through a case and a half a week. I did experience the dry mouth and a serious boost of energy the first day I took it. After that it's just been dry mouth but hey I'm accustomed to drinking a ton of water. If you change your lifestyle and hit the gym it works.

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March 27, 2014 11:29 AM
Review by KWD3009 (taken for 1 to 6 months): User Rating:  
   
8.0

phentermine: Worked well the first time I took and but after that my body adjusted to it and it was not as effective

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March 22, 2014 10:50 PM
Review by Kat von d: User Rating:  
   
10

phentermine: I eat fairly healthy and exercise at least 3 times a week however my weight wasn't dropping so I went to my doctor. He prescribed phentermine 37.5 mg and I have been taking it every morning before breakfast. The only side effects I noticed was the dry mouth, but it just encouraged me to drink more water. Didn't have any problem sleeping, irritability or pounding heart like others have described. I go back to my doctor In 2 weeks for my 30 day review. I'm down from 206 to 195 so far.

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March 22, 2014 3:48 PM
Review by coccojenn (taken for 1 to 6 months): User Rating:  
   
9.0

phentermine: I started phentermine two months ago (mid-Jan 2014) and I have lost 25 pounds (almost 26) so far. Working out is a challenge with my kids so I just try to walk whenever I can. I mostly monitor my caloric intake to make sure I eat enough to avoid my body's starvation defense mode, because that would defeat the purpose. I usually do the protein meal bars for lunch or breakfast shakes and then a sensible dinner. Only discomfort is the occasional constipation when I don't drink enough water. But usually the dry mouth is enough incentive to drink as much water as possible. Also I completely eliminated soda and other caffeine sources which I believe helps avoid the risk of heart palpitations.

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March 21, 2014 11:19 PM
Review by Cowgirl41: User Rating:  
   
9.0

phentermine: I started three weeks ago and down 13 pounds. 254 and now 241. Side effects.. Dry mouth, insomnia and heart racing not all the time. I will weigh myself again at the end of March

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March 20, 2014 7:32 PM
Review by Cowgirl41: User Rating:  
   
9.0

phentermine: I started three weeks ago and down 13 pounds. 254 and now 241. Side effects ... Dry mouth, insomnia and heart racing not all the time. I will weigh myself again at the end of March.

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March 20, 2014 6:43 PM
Review by Bride101814 (taken for 1 to 6 months): User Rating:  
   
10

phentermine: I've been on phentermine 30mg for almost seven weeks now. My start day was 2/1/14 and I weighed 215lbs. My last weigh in was 3/15/14 (6 week mark) and I weighed 194lbs. That's 21 lbs in 6 weeks! I just weighed in this morning and I'm down to 191.5lbs. Hope to meet my goal of 190lbs by Saturday. I eat low carb (not induction low) and exercise 3-4 days a week. Next week I'll be starting my day with morning cardio sessions. No complaints as of now. I love this.

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March 20, 2014 3:45 AM
Review by Miiki (taken for less than 1 month): User Rating:  
   
8.0

Adipex-P (phentermine): I lost five pounds in three weeks. I took the pill five days a week and took a break over the weekend. I definitely ate more when I did not take the pill. Overall, I have been eating healthy prior to taking the pill, but this has definitely helped me to avoid rush eating of sweets and other unhealthy things at times when I would be very hungry or stressed. The pill alone is not enough. Exercising on a regular basis makes a big difference. I'm looking to lose five more pounds by the end of this month.

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March 17, 2014 9:01 AM
Review by VeryHopeful: User Rating:  
   
8.0

phentermine: I am taking phentermine 37.5, usually taking a full pill, but sometimes only taking half because of the way it makes me feel especially at night. I have a hard time sleeping and have my heart pounds. Hoping these side effects will go away but it has been a little less than a month and I still experience them. I have already lost 22 lbs and hoping to lose the rest in another 2 months because my doctor said I can only take it for 3 months...if I keep losing like I have the first month I will make it. I just wish I wasn't experiencing these side effects because sometimes they are really hard to deal with.

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March 16, 2014 12:25 PM
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