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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Condition DownUp Reviews Compare Avg. Ratings DownUp
Obesity 138 reviews 54 medications
   
9.2
Weight Loss 827 reviews 27 medications
   
9.0
Summary of Phentermine reviews 965 reviews 9.1

Reviews for Phentermine

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

User Rating:  
   
9.0

Adipex-P (phentermine) for Weight Loss: It was really effective for me. My doctor only prescribed it for two months though. I lost 34 pounds.

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December 14, 2014 11:07 AM

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

User Rating:  
   
10

Fastin (phentermine) for Weight Loss: Fastin has helped me lose 10lb. I started off with a half a pill and not doing full pills so my heart and body could get used to it. All I can say is I love this diet pill. REALLY HELPED ME.

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December 7, 2014 4:06 PM

Review by Teetee SC:

For Weight Loss: I started phentermine 15mg on 9/28/14 I was at 252lbs 5'9ft after my weigh in on 11/16 was at 222lbs, 30lbs in total weight loss. Water intake and different cranberry juices 3-4 days. Walking 1.5 miles, mostly baked foods, Italian dressing instead of butter on baked food. I like it so far and I'm keeping it off this time.

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December 5, 2014 9:51 AM

Review by Frances8 (taken for 1 to 2 years):

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: Adipex-P worked for me. I lost the weight and I'm keeping it off. I haven't become resistant to the medicine at all. The generic brand is different - I had a headache and dry mouth. The name brand - no problems. I'm continuing to take it under the supervision of my doctor. I have no side effects, I feel good and I'm at a good weight. I exercise and stay on a low carb/high protein diet. This medicine rescued me from the weight loss merry-go-round.

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November 25, 2014 8:24 AM

Review by Beautiful Kendra (taken for less than 1 month):

User Rating:  
   
10

For Weight Loss: Excellent! I'm down 13lbs in 3 days... Tremendous amount of water weight, but I'm happy. I work out 4 days a week. 1,200 calories per day. I love it.

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November 20, 2014 4:25 PM

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

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: I'm not exercising at all. I'm just eating right. I have been on it 6 days now and I've lost 9 pounds. 1300 calories a day !!!

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November 16, 2014 4:30 PM

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

User Rating:  
   
8.0

For Weight Loss: I've lost 10 pounds in 5 days my start weight was 185 my current 175 my goal 145. My first day taking it I was very drowsy but now the only side effect I have is nausea but it's only around the time I would normally eat.

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November 15, 2014 5:07 PM

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

User Rating:  
   
10

For Weight Loss: I started this med on Monday Oct. 27th and weighed in at 237lbs and today is Nov. 8th and weighed in at 218lbs. That's almost a 20lbs weight loss! I haven't changed my diet much because I was already eating healthy, but however this med does not allow me to complete each meal (about 65-70%). I have not started exercising yet, but will be starting on Monday.

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November 8, 2014 6:56 PM

Review by Joanna ram (taken for less than 1 month):

User Rating:  
   
9.0

For Weight Loss: I started phentermine on Monday Nov 3rd my weight was 189.5 as of this morning Nov 5th I am down to 185.2 and I only take half a pill around 4:40 am the only side effect I have is dry mouth that turns to nonstop water drinking and off course going to pee every 15 min but other than that I’m loving it. I also am changing my eating habits no fast food nor soda or caffeine.

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November 5, 2014 7:24 PM

Review by Nicole12345677:

User Rating:  
   
9.0

For Weight Loss: I've been taking phentermine for 6 days and have lost 10 pounds already! I was 180 on Friday and now it's Wednesday night and I'm 170! I love this stuff! I don't crave any sweets and have so much energy! Also I've cut down to 20 carbs a day and haven't drank any cokes!

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November 5, 2014 3:55 PM

Review by jcco020:

User Rating:  
   
10

For Weight Loss: I am 43 years old, started 4 weeks ago at 186 lbs now at 171. Sticking with a low calorie/low carb diet. Getting in lots of cardio. The pill isn’t magic, it’s been a lot of work losing, keeping track of foods, finding time to exercise and cook healthy meals for lunch and dinner. The pill has curbed my appetite, helped with focus and motivation. No side effects after first week (insomnia, dry mouth). All around pleased with results but wonder if I could have done it without pills seeing as I stated, it’s been a lot of work.

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November 2, 2014 7:06 PM

Review by jessicajade:

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: Started Adipex 2 weeks ago. Lost 20 lbs so far! I even skip the pill 1 to 2 times a week. The energy loss is aweful those days though.

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November 1, 2014 10:34 AM

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

User Rating:  
   
8.0

Fastin (phentermine) for Weight Loss: Works great . I f you have issues with heart rate just take half a pill in the morning other half in the after noon to get used to it.

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October 27, 2014 9:24 AM

Review by Chevys mommy (taken for less than 1 month):

User Rating:  
   
10

Fastin (phentermine) for Weight Loss: I took this and it's the best thing I have ever tried. The first couple of days I went by the directions then I doubled the dose. And I lost 20 pounds in 2 weeks. It did make me feel very jittery and my heart rate was going 90 to nothing but I was determined to lose weight.! And a little information DO NOT I repeat ( DO NOT ) take Fastin before you get in a tanning bed. Tan first then take it. It made me very very strange in a bad way. I'm no doctor but when I increased my dose I had the shaking and the increased heart rate. But It never harmed me.

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October 24, 2014 9:18 PM

Review by ZPaulIsShrinkingfast:

User Rating:  
   
10

Adipex-P (phentermine) for Weight Loss: I started Adipex-P nine months ago and I've consistently lost weight. When I weighed in at the Dr.s today, I am down 20.6lbs since last month! I've lost a total of 83lbs and was approved for my left knee replacement on Nov 18. When that heals, we do the other one. I have battled obesity my whole life- had gastroplasty (stomach stapling) back in the early 80s and I've lost and gained hundred pounds during time periods in my life and I've got hope now that there may be a light at the end of the Tunnel. When I get my knee joints in and get active I think I really might be able to get down to a decent weight and make it stick. I'd like a second chance at life, to find a wife to spend my retirement years with. Staying Positive!

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October 15, 2014 7:52 PM

Review by Anonymous:

User Rating:  
   
10

For Weight Loss: I started phentermine on 10/11/14, start weight was 249. As of today 10/14/14 I am at 241. That's 8 pounds that I lost in 4 days! I did change my eating habits to low fat and have walked 3 miles every day. Also, I have been drinking only water. I cut out my diet coke that I was addicted to.(if I can do it, anyone can do it!). I feel great with no side effects. I truly believe in this medicine. The only thing you have to remember is that it is a lifestyle change. I wish everyone the best.

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October 14, 2014 8:54 PM

Review by JJMS:

User Rating:  
   
8.0

Fastin (phentermine) for Weight Loss: 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):

For Weight Loss: 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

For Weight Loss: 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) for Weight Loss: 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

For Weight Loss: 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) for Weight Loss: 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 AWL4Sassy (taken for 1 to 6 months):

User Rating:  
   
10

For Obesity: So far this is absolutely the best aid in losing weight for me. I had lost 75 lbs in 2011 with Weight Watchers but gained about 38 lbs back between 2012 and 2014. I went to the doctor and he put me on phentermine & chromium picolinate. I have been on this since 8/23/14. In 6 wks I have lost 25 lbs. It has significantly decreased my appetite to where I don't even think about eating and have to remind myself to do so. The only side effects I have had are dry mouth, which causes me to drink water constantly (so not a bad thing), mild insomnia the first 2 wks & constipation, for which I just take a supplement. BUT you have to eat right. Reduced carbs for sure. Weight Watchers taught me healthy eating so you do have to change your food.

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October 6, 2014 2:16 PM

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

User Rating:  
   
10

For Weight Loss: 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) for Weight Loss: 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

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