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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 2,951 reviews on Drugs.com. 84% of reviewers reported a positive experience, while 5% reported a negative experience.

Reviews for Phentermine

  • 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 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 and energy booster. I definitely would recommend this. But please take only one pilll a day instead of two and split it in half."

8 / 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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67 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 awhile and have whatever I want, but I make sure to get right back on track the next day. Pentermine is not a miracle pill, you still have to work at changing your lifestyle."

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Frequently asked questions

  • 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 its 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, breath don't over think, be happy. This is coming from me!It helped along with small positive changes. Peace!!"

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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Are you taking this medicine?

  • 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 170lb. Good luck everyone!!!"

10 / 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 im 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 im pleased with my weight loss and will continue using fastin ."

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 335lbs and now 320lbs. I 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 do 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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  • jenna
  • May 20, 2014

For Weight Loss (Obesity/Overweight) "I started taking 37.5 mg Phentermine 3/2014 and it is now 5/2014. In the past two months I have lost almost 40lbs!. my starting weight was 185 and I am now at 148. I went from a size 14 to an almost 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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  • Dee
  • Taken for 1 to 2 years
  • June 29, 2019

For Weight Loss (Obesity/Overweight) "From 180lbs to 135lbs. 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, drink a bottle of water & kept sipping water. You know what? FINALLY ENERGY! I cleaned my house, yard, car. It worked! Now the weight should comes 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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  • 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 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."

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 over whelmed 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 188, today I'm 162. That's a lost of 26 pounds in 5 weeks. Next week I will start exercising."

10 / 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 caffiene 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. Lost a couple of lbs 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 mos 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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  • 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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  • 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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  • JoJo
  • Taken for less than 1 month
  • October 10, 2019

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "I took this pill in 2016 and had good results with it. But I was also a little younger and didn't weigh as much. Now i am 51 years old and disabled, which makes it hard to exercise. So I've gained a lot of weight in the last year. So I'm fixing to try this again. I'm 5'9" and my weigh in today was 217lbs. I will start taking tomorrow morning. My goal is to get to 170lbs by New Year. Wish me luck."

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

For Weight Loss (Obesity/Overweight) "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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  • Anon
  • January 29, 2021

For Weight Loss (Obesity/Overweight) "5'2", Female, 28. Sedentary (desk job, gyms closed). Pre-existing PTSD, depression and ulcerative colitis. 37.5mg phentermine for 3 months. Doc did not stack it with fluoxetine or topamax as I'm already on 450mg of Wellbutrin. After gaining 15lbs in the first few months of COVID isolation, I decided to take this. Yes, I got the jitters for the first few days. Yes, it made me anxious for the first few days. Yes, my breathing pace and heart rate were up for the first few days. It went away. I didn't experience constipation per se, but I ate so little that bowel movements were few and far between. I took it between 6:30am and 8:00am every morning, otherwise I didn't get enough sleep. August 2020: 136lbs, size 28/7 jeans, m/l shirts, 34B bra. November 2020: 112lbs, size 23/3 jeans, xs/s shirts, 32C bra. This was combined with an Atkins variety keto diet, with 2 shakes and 1 big meal/day on most days. I kept my carbs under 20/day and struggled to eat 1200 calories."

10 / 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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  • JJMS
  • October 14, 2014

Fastin (phentermine) for Weight Loss (Obesity/Overweight) "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."

8 / 10
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  • Losin...
  • Taken for less than 1 month
  • November 8, 2014

For Weight Loss (Obesity/Overweight) "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."

10 / 10
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  • Anonymous
  • April 3, 2009

Adipex-P (phentermine) for Weight Loss (Obesity/Overweight) "I started taking Adipex early February 2009 weighing in at 288lbs, exactly one month later weighed in at 268lbs. Now April 3 I am weighing in at 255lbs, only taking half a pill every other day, sometimes I go a few days without taking it. Started out with 30 day supply, 2 months later still have 7 pills remaining, so it really doesn't take much. I love it, it gave me a boost of energy so with exercise and a healthy diet I have lost 33lbs in 2 months! NO SODAS AT ALL. I do not deprive myself of sweets, if I crave chocolate, I may eat 1 or 2 cookies. It has changed my life completely."

10 / 10
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146 Report

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.