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Phentermine User Reviews & Ratings (Page 5)

Brand names: Adipex-P, Lomaira, Atti-Plex P

Phentermine has an average rating of 8.7 out of 10 from a total of 2,955 reviews on Drugs.com. 84% of reviewers reported a positive experience, while 5% reported a negative experience.

Reviews for Phentermine

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

For Weight Loss (Obesity/Overweight) "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 / 10
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  • Queen...
  • Taken for less than 1 month
  • December 21, 2019

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "Started Adipex late October, now it is in the middle of December. I have lost 20 pounds. The pill literally cut my appetite, and I drank water. No sweets, breads. I really didn’t exercise, but housework, working, and being a full-time Mom and Wife. I guess you can say that’s where it came from. The only side effects I had were dry mouth and insomnia; nothing too bad. Oh, and yes, I could have lost more weight, but I skipped some days taking the pill."

10 / 10
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71 Report
  • Tina
  • January 30, 2015

For Weight Loss (Obesity/Overweight) "I'm an 18-year-old female. My entire life, I've always been overweight, and I wasn't able to lose it. It didn't bother me until I gained 40 pounds in less than a year due to being on birth control. I went from 175 lbs to 215 lbs; that's when being overweight caught up to me. I wasn't noticing how much my appearance changed until I went clothes shopping, and I couldn't fit into a size 16. That was when I went to my doctor, and he recommended Phentermine. It has been almost 3 months, and so far, I've seen nothing but positive results. I've lost 31 pounds so far and still going! I bought a size 13 mini skirt, and it was too wide! I haven't fit into a size 11 since I was 15. I strongly recommend it because of it; I smile every time I look in the mirror now."

10 / 10
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Frequently asked questions

  • Margo...
  • April 1, 2016

Fastin (phentermine) for Weight Loss (Obesity/Overweight) "So I was taking phentermine for a month and lost 15 pounds. I stopped taking it because it cost too much every two weeks to go to the doctor and get medication. I googled pills like phentermine, and this one came up. The pills look the same except phentermine is smaller. I took half a pill of Fastin instead of the whole thing, and it feels stronger than a whole pill of phentermine. So if you're new to this pill, I would do only one pill a day and split it in two. It works as an appetite suppressant and an energy booster. I definitely would recommend this. But please take only one pill a day instead of two and split it in half."

8 / 10
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110 Report
  • vicbar
  • November 16, 2007

For Weight Loss (Obesity/Overweight) "I have been using phentermine for approx. 3 months and I've lost 42 lbs. I look and feel a lot better, and am working on losing another 40. I watch my diet and exercise. I take a day off every once in a while and have whatever I want, but I make sure to get right back on track the next day. Phentermine is not a miracle pill, you still have to work at changing your lifestyle."

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Are you taking this medicine?

  • kedda...
  • Taken for 1 to 6 months
  • March 25, 2015

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "This pill works! I do advise that you eat breakfast, wait 30 mins, and drink water throughout the day. If you don't get hungry, eat something wholesome. My experience with headache and mood swings was due to me not feeling hungry, yet my body still needed fuel. Listen to your body! I'm at a weight that I'm happy with. I do exercise; it's my therapy. One seventy-three from 205! Also, it helps with my blood pressure. Eating is so much easier. I can think about what I need to prepare versus just grabbing the first snack, not so good choice that would satisfy me. Know your body, breathe, don't overthink, be happy. This is coming from me! It helped along with small positive changes. Peace!"

10 / 10
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  • Cyndi
  • Taken for 1 to 6 months
  • February 22, 2020

For Weight Loss (Obesity/Overweight) "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 / 10
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  • Liz
  • Taken for less than 1 month
  • April 16, 2014

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "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."

6 / 10
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  • tazcrew
  • Taken for 2 to 5 years
  • May 31, 2024

For Weight Loss (Obesity/Overweight) "I took this medication years ago for weight loss. It became my best friend; I had energy and was able to pass on foods that normally found their way into my mouth. I did experience dry mouth, and this was even with taking copious amounts of water. I went from 303 lbs. down to 245. It did take about a year to lose this weight even with exercising 3 to 4 times a week doing cardio and various exercises. After a year, my doctor removed me from the medicine. I did keep the weight off for a bit but did gain all the weight back. (Divorce, life changes, and COVID did not help since food had always been my comfort.) Fast forward 5 1/2 years, and I went back on the medication again. Weight loss has been slow (maybe due to age and menopause). I have been on it again for 5 months and lost 35 lbs., which is about 7 lbs. a month. I know not huge losses, but it does help suppress the appetite, and I still have dry mouth. I do have more energy but not like the first time taking this medication."

8 / 10
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  • mzbcoop
  • Taken for less than 1 month
  • October 24, 2013

Fastin (phentermine) for Weight Loss (Obesity/Overweight) "I have been taking Fastin for a little over two weeks. I started at 150, and I'm currently 140. Fastin causes me not to be hungry as much and gives me energy. I do feel a little jittery sometimes and have a funny taste in my mouth. Overall, I'm pleased with my weight loss and will continue using Fastin."

10 / 10
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  • Ash
  • Taken for less than 1 month
  • April 28, 2019

For Weight Loss (Obesity/Overweight) "Started the pill on a Wednesday and by Saturday I was down 10 lbs!!! From 224-214!!! I’ve read all the reviews and side effects but my experience has been good. Extreme dry mouth and once had a headache but I’ve been okay. Hoping to get down to about 170 lb. Good luck everyone!!!"

10 / 10
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  • jenna
  • May 20, 2014

For Weight Loss (Obesity/Overweight) "I started taking 37.5 mg Phentermine in March 2014 and it is now May 2014. In the past two months, I have lost almost 40 lbs! My starting weight was 185, and I am now at 148. I went from a size 14 to almost a size 6!! In the beginning, I had severe dry mouth, but it has now subsided. I also haven't had any sleeping problems nor blood pressure issues at all. For anyone needing a jump start to weight loss and something to help you make better food choices, this medicine is awesome!"

10 / 10
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  • Krissy
  • Taken for less than 1 month
  • October 11, 2018

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "I started taking Adipex on a Saturday, which was September 1, 2018. I went to the doctor and weighed in on September 26, 2018. I have lost 15 pounds. I weighed in at 335 lbs and now weigh 320 lbs. I will go back on October 26, 2018, and I will definitely let you know. I haven’t had any side effects at all! I mean none!! I walk 5 days a week for 30 minutes, nothing else. I am very happy, and I am starting to feel better about myself."

10 / 10
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  • Myexp
  • October 12, 2014

For Weight Loss (Obesity/Overweight) "I am 5'1 and weighed 132 lbs when I started taking Fastin. After 3 months, I had lost down to 107 lbs. I never did exercises and I ate anything I wanted, and the weight just kept dropping. So to me, this is a miracle. I would definitely recommend this to anyone."

10 / 10
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  • Alaysha...
  • December 23, 2015

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "This product is the real deal. I lost 20 pounds in 1 month. The first week, I felt weird, like I was high. The energy is great. I never exercised because I was overwhelmed with my job & school. And I ate what I wanted to. I only drink lots of water and sometimes with Crystal Light, no sweets. Everyone wants to know what I am doing. I recommend this to everyone that needs a boost to drop the pounds. I started at 188, today I'm 162. That's a loss of 26 pounds in 5 weeks. Next week I will start exercising."

10 / 10
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103 Report
  • Tried...
  • Taken for 1 to 6 months
  • May 23, 2018

Lomaira (phentermine) for Weight Loss (Obesity/Overweight) "I've tried almost every diet, weight loss pill, and home remedy on the market. Nothing has really worked since I've turned 40. After my physical, the doctor started me on Lomaira, and I lost 10 pounds the first month without even exercising! Now I'm in month 2, exercising 4 times a week, and I feel better than I have in a long time. I've lost another 6 pounds in 8 weeks for a total of 16. It's really been my saving grace for eating less junk food & making good choices, especially at night! I'm determined to be Fabulous and Fit at 40, and I think I've finally found something to help me get there. :)"

10 / 10
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  • Dee
  • Taken for 1 to 2 years
  • June 29, 2019

For Weight Loss (Obesity/Overweight) "From 180 lbs to 135 lbs. I came off the pills for 8 months. Gained a lot back. Went to doc recently & got more. I usually take 1/2 pill but doc gave me capsules. When I started taking them, I felt awful. My heart was racing & I got very sleepy, which happens when your heart is overworking. It was giving me the opposite effect. I couldn’t sleep well. Since you cannot cut these in 1/2, I went back to doc for tablets. Took my 1/2 tablet & in only a few hours… I was again tired & had to lay down & take a nap. I had no idea what was going on so I hopped on Google. SOLUTION: I was NOT drinking enough water. Yesterday was my 1st actual day using Phentermine properly. I woke up, took 1/2 my pill, drank a bottle of water & kept sipping water. You know what? FINALLY ENERGY! I cleaned my house, yard, car. It worked! Now the weight should come off. Folks, learn from me. You must drink more water (or other no-calorie drink) for these pills to act as they should. Good Luck"

8 / 10
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  • Bano
  • May 25, 2020

Lomaira (phentermine) for Weight Loss (Obesity/Overweight) "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 / 10
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  • Lomaira...
  • Taken for less than 1 month
  • September 29, 2023

Lomaira (phentermine) for Weight Loss (Obesity/Overweight) "I tried Adipex in years past (pre-menopause) and always lost 30 pounds in 12 weeks. Sleep was always disrupted with the extended-release 37.5mg. Menopause came at 53 yo along with excess weight gain. I didn't want to take the Wegovey - not enough info on long-term side effects. I saw Lomaira 8mg online and discussed it with my doctor. I had been doing Intermittent Fasting for the last 5 years (16:8) (noon-8 pm eating window) but maintained weight with no loss. I chose to go on Lomaira as a way to curb my appetite to extend my fast to One Meal A Day (OMAD). Monday through Friday, I skip lunch (easier to do when partner is at work) and just have an appetizer, dinner, and sometimes dessert from 6 pm to 8 pm. So, I fast for 22 hours and then eat within a 2-hour window. On Saturdays and Sundays, I go back to my 16:8 regime of fasting, eating lunch and dinner. I'm only 2 weeks into this program - have no side effects, no hunger - and feel lighter with more energy. This is my strategy for me. Take care!"

9 / 10
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  • shelby
  • August 30, 2013

Fastin (phentermine) for Weight Loss (Obesity/Overweight) "I started taking Fastin a few days ago after I read so many good reviews. I must say that I did take the advice of so many others and started with half of the pill. It seemed to put me in the best mood and my energy level went through the roof. Not to mention, I wasn't hungry at all. Yes, it did make me feel a bit jittery so I drank a lot of water and had to pee quite often. Don't drink anything with caffeine in it while taking this because it makes you even more jittery. Plus, if you work in the heat, be careful because I felt like I was having hot flashes, but wow, it is definitely worth it. I lost a couple of pounds already. Well worth it for me."

10 / 10
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  • Vogue
  • Taken for 6 months to 1 year
  • March 24, 2017

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "Lost 45 lbs on this medicine and couldn't be happier. This pill works. I have kept the weight off for 6 months now and desire to lose another 15 - 20 lbs, so I'm going back on it. My belly has shrunk! 5 ft 2 started at 212 lbs, now 167 lbs. Some people that haven't seen me in a while do a double take. Counting my calories, exercising 5 days a week, keeping a food diary, and drinking lots of H2O helps too. Good luck all!"

10 / 10
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87 Report
  • Teetee...
  • December 5, 2014

For Weight Loss (Obesity/Overweight) "I started phentermine 15mg on 9/28/14. I was at 252 lbs, 5'9 ft. After my weigh-in on 11/16, I was at 222 lbs, 30 lbs 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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  • Kap
  • Taken for less than 1 month
  • September 2, 2018

Lomaira (phentermine) for Weight Loss (Obesity/Overweight) "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 / 10
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  • 49ers...
  • Taken for less than 1 month
  • February 9, 2020

For Weight Loss (Obesity/Overweight) "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 / 10
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  • SMCmo...
  • Taken for 1 to 6 months
  • August 4, 2019

For Weight Loss (Obesity/Overweight) "I began taking phentermine June 18th 2019 with a starting weight of 295lbs at 5’3”. During the first few days I was very jittery and had trouble sleeping, however after a week I was able to adjust and now the only side affect is dry mouth/thirst. I drink about 100oz or a more a day in water. I cut out all liquids holding calories and cut back on processed food while introducing more whole grains and fresh fruits and veggies. I have PCOS so losing weight can be very difficult. I also started YAZ to help level my hormones while losing the weight. I began increasing my activity levels slowly with avoiding the elevator at work and utilizing the 5 flights of stairs several times a day (took 4 weeks to work up to this) and now I began using my tree climber at home in addition. It’s been 6 weeks and I am down to 266 for a total 29lbs loss. Each week I increase my activity and lesson my processed food. My goal is 150lbs."

9 / 10
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Reviews may be edited to correct grammar/spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest are not published. This information is not intended to endorse any particular medication. While these reviews may be helpful, they are not a substitute for the expertise, knowledge, and judgement of healthcare professionals.