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User Reviews for Phentermine

Also known as: Adipex-P, Lomaira, Atti-Plex P

Condition Avg. Rating Reviews Compare
Obesity   8.7
605 reviews 65 medications
Weight Loss   8.7
2265 reviews 42 medications

Reviews may be moderated or edited before publication to correct grammar and spelling or to remove inappropriate language and content. Reviews that appear to be created by parties with a vested interest in the medication will not be published. As reviews and ratings are subjective and self-reported, this information should not be used as the basis for any statistical analysis or scientific studies.

Reviews for Phentermine

Texasgirl March 1, 2021

Fastin (phentermine) for Weight Loss: “I took half of a pill and the first time, I did experienced my heart racing. It did however curbed my appetite. When I would take half, I noticed the other half was a crumbly pill form. I’m not sure if anyone else has had this happen.”

8 / 10
OnMyJourney March 1, 2021

For Weight Loss: “I started taking Phentermine 10 days ago and I have lost 8lbs. I started at 220 and I’m now at 212!!! I do exercise every other day, but nothing too intense— although I do make it a point to sweat. I have definitely changed my diet and I try to stay under 1,000-1,500 calories. I cut out sugar and reduced my carb intake. I don’t get as hungry as I used to and I have so much energy about after taking it. For me, this pill is just a way to help me ease into better habits. It’s definitely not a magic weight loss medication— you have to put in the work! The first 2 days I had a constant minor headache but it went away soon. I am unbelievably thirsty everyday which is fine because it reminds me to drink lots of water! I can’t wait to update again in a few weeks!”

10 / 10
Anonymous February 23, 2021

Adipex-P (phentermine) for Weight Loss: “Works very good . Very good at not being hungry at all, So hope I can keep it this why love it, no problems at all yet and I've been taking it for 2 weeks .”

10 / 10

Frequently asked questions

Oneiannie February 21, 2021

For Weight Loss: “RNY Gastric regain. I started a medication in 2019 which increased my appetite. From Feb 2019 to Dec 2020 I gained 84lbs. Started Phentermine Jan 2021. On one month I lost 10#s. I was started on 18mg. But after the 1st day I still struggled with the "Haunting hunger". I know I'm not actually needing food but the thought to eat was ALWAYS there. I fought for 2 weeks and lost 3 lbs. Contact my DR. Increased Phen to 37mg and got hunger under more control. I have not had ANY side effects. The very first day I took it I didn't feel hungry at all and had a small increase in energy. After that, no side effects at all. I was really preparing for a racing heart or even more of an increase in energy. I was also hoping it would rid me of any sort of appetite, but it does not. I'm still grateful for this help though. Until I can get back down in weight the DR wants me to stick to 800-1000 calories. Being on this helps me get close. Cheese and nuts are my go too protein.”

7 / 10
Lisha February 17, 2021

For Weight Loss: “I started taking this medication on 1/11/21 weighed in at 246 pounds, on 1/27/2021 I weighed in at 237 pounds. Today 2/17/2021 I’m 224 pounds. I have no appetite and I work out 5 times a week for 1 hour. My goal is 190 pounds. The first few days I felt weird, after that no symptoms. I can barely eat a medium size chicken drumstick. I know I’m averaging less than 1200 calories per day.”

10 / 10
Mimi February 14, 2021

Lomaira (phentermine) for Obesity: “This is my second day taking Lomaira 8 mg and Topiramate 50 mg at night, I don’t feel like the Lomaira help me to get up, either the Topiramate dose is too high or Loraima too low. I need to talk to my doctor.”

9 / 10
Sofia · Taken for less than 1 month February 14, 2021

For Weight Loss: “I don't like this weight loss supplement ? My stomach hurt and give me a terrible gas, very uncomfortable all day? I stopped after a week.”

1 / 10

More FAQ

cwardnm February 3, 2021

For Weight Loss: “I went to a weight loss clinic Jan 4, 2021. Dr put me on old fashioned low fat diet and phentermine. WOW. Went from 218lb on Jan 4 - to 210lb this morning. The dry mouth is lessening. No more jitters or anxiety. I really don't think about food. Dr told me not to spend too much time in the gym, because I am not training for athletics, and most people get into routines they will not sustain. He told me to walk a bit every day. Told me to continue my yoga every day, even if for 15 minutes. TAKE TRAZODONE for sleeplessness. It's not a sleeping pill, but an anti depressant. Doesn't have the harmful side effects of regular sleeping pills. If I combine it with melatonin, it really helps. Also, I don't take Phentermine every day. I think it accumulates in my system and keeps me awake unless I mix it up a bit. I take a half some days, and today I took none. I will sleep better tonight. AND I still get the benefits of a reduced appetite.”

10 / 10
Chas · Taken for less than 1 month February 2, 2021

For Weight Loss: “Hello. I've taken (Phentermine-Adipex) in the past and lost 50 pounds in 3 months. However, I did occasionally experienced side affects such as headaches and mood swings in the evenings. But it does effect people differently. I would definitely recommend others to try it. It’s not a magic pill but incorporated with a healthy diet & exercise it will help get off stubborn pounds quickly. Fast forward: After 7 years of keeping the weight off I gained all the weight back due to depression & just being lazy during Covid. I’m back taking (Phentermine 37mg) I must say my body is not responding to the medication like before. The strength of phentermine now is weaker than it used to be. I will update in 30days.”

8 / 10
TanLove February 1, 2021

For Obesity: “I started taking this phentermine medication in Aug of 2020. I lost 30lbs in 2 months, it was going well. I did suffer from anxiety before I took the pills however it got worse. I did an intense workout and my heart rate did not go down after an hour of resting. I was driving and my heart rate went up to about 140 at resting. I was gasping for air. I rushed my self to the hospital, told the dr what was going on. EKG came back normal however my blood work was not normal my cardiac enzymes came back elevated. So they admitted me. They told me to stop taking the medication. I was scheduled to do an echocardiogram, but it was cancelled it and said I was having a panic attack and because of the intense work out it caused my heart to work more and it released those enzymes. Every since I have been having extremely bad panic attacks at night and I keep thinking that I am going to die. I feel like I am losing my mind. I will say if you are obese please look into bypass surgery.”

1 / 10
Sissy · Taken for less than 1 month January 31, 2021

For Weight Loss: “I started taking 37.5 mg of phentermine - one pill am. Before taking this I had been exercising and eating right but I could not lose a pound. Since starting phentermine a week ago, I am down 5 lbs. I am so excited! I have so much energy and no appetite. I was close to 200. I also have fibromyalgia and it helps with that. I think they actually should prescribe it for fibromyalgia. I took Cymbalta in past for fibromyalgia but phentermine is so much better! I am going to hug my doctor if I reach my goal of 150. Side effects for me is dry mouth but you end up drinking more because of it so it isn’t a bad thing. I honestly feel like this maybe a miracle pill for me!!”

Anon January 29, 2021

For Weight Loss: “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
Turning 50 · Taken for less than 1 month January 26, 2021

Lomaira (phentermine) for Weight Loss: “I started the combination of lomaira and topiramate on January 11 along with walking five miles a day, drinking water, cutting out sodas, drinking two green smoothies a day, cutting out fried foods on the week days. I am down 13 pounds I had one nightmare and do feel more moody than normal but my energy level is through the roof I take a bath every night to wind myself down to go asleep”

10 / 10
G'd up · Taken for 6 months to 1 year January 22, 2021

Adipex-P (phentermine) for Weight Loss: “If taken the right way and not abused, an individual could really get that weight off.”

10 / 10
Anonymous January 8, 2021

For Weight Loss: “I was just like you reading the reviews about this weight loss medicine. Always go with your first mind if your first mind tell you no just go with it. If you are a person who suffers with anxiety or depression in the past this is not for you. I had a baby 2 months ago wanted my baby weight off so bad but this made my anxiety come back. I was only taking this for five days at a dose of 37.5mg whole pill. Also messed with my mental health had insomnia And brought on depression. Stay away - lesson learned for me hope I can recover well so that I can take care of my kids”

1 / 10
Ellie · Taken for 1 to 6 months January 1, 2021

For Weight Loss: “Started Oct 23, 2020, today is Jan 1,2021. Lost 20 lbs. Started at 18.75 mg Phentermine, 2x day. Some days only took one dose, other days skipped both doses. Got rid of my appetite, even on days I skipped completely. Side effects: grim mood, tight jaw, teeth grinding, distracted, bored, have energy but feel inertia. Still hate exercise, can barely tolerate the boredom of it. Tips: First week I ate no carbs, when I eat keto I have quick loss due to water, so not impressed with 10 lb loss first week. Doesn't last. End up averaging 2 lb weekly loss. Cannot cheat. 20 carbs in one day = 4 lb gain and 5 days to get back to ketosis. Not a miracle drug. Makes it a bit easier to walk 3 miles a day and starve. That's what it takes for me to lose 2 lbs a week. Gotta keep my expectations low and realistic. I am 59, 5'5" started at 184, now 164 since December 21. Stalled now for 10 days. I can't eat less; I am barely eating at all, 200-400 calories a day, and I can't exercise more because of chronic pain.”

7 / 10
Bob 872 · Taken for 1 to 6 months December 30, 2020

For Obesity: “I’m 62 and a Veteran. I have always been active. I started slowing down a bit, and gained some weight. I’m Diabetic and have tried to loose weight. I’m 5ft 8 and weighed 240 lbs. I went on a 1200 calorie diet for 3 months and loss 10 lbs. I leveled out. Went to see my PCP for some help. He put me on Phentermine 30mgs per day . Wow , in 2 months I have lost 24 lbs and eat like a bird. I have a salad and I am full for the day. I still walk and stay busy. I am retired because I am disabled. My desire for food is almost zero. I feel much better, my blood sugar is way down. You have to drink lots of water on this medication. Dry mouth is always there. I have to keep going and I plan too. For my Family. God Bless.”

10 / 10
Jan · Taken for 1 to 2 years October 24, 2020

For Obesity: “I have been on 30mg phentermine daily for about 2 years. The weight melted off the first 9 months then slowed for 6 months. The last 6 months I have have gained weight. Will be going off for a few months and then hopefully get out back on. I lost 60lbs in about a year. I love the boost in energy I feel. Does give you extreme dry mouth.”

10 / 10
CC · Taken for less than 1 month October 22, 2020

For Weight Loss: “My dr just started me on phentermine 18.75mg. I told him I don't have an issue with overeating or need appetite control. I take gabapentin for MS which causes an extremely low metabolism & I was gaining 5 lbs a week, just eating healthy. I can't do much since I have MS (exercise). I'm 41 & 5'3". I weighed 123 last week & now I'm up to 138. It's hard on me when I gain weight, everything seems to hurt. I just need a metabolic booster. Makes me jittery. No, I'm not obese but will become if I don't take some kind of action. Exercise alone or diet will not matter. I will still gain weight. Anyone in the same boat?”

3 / 10
Cashcash · Taken for less than 1 month October 4, 2020

For Obesity: “Ok so I used both brand I’m on generic phentermine now when I used the brand I lost 15 pounds in one week, when I used the generic kind my weight loss slowed down. I also noticed when using the brand I had so much energy I mean I was moving around I was not as lazy or tired but generic made my stomach hurt a lot in use the bathroom slower process. I personally prefer the brand I don’t mind paying 60-70 a month”

10 / 10
Jessy September 21, 2020

For Weight Loss: “Started 15mg phentermine in June 30 2020, as of today September 21 I have lost a total of 33 pounds. I am 33, 5’5 starting weight 212. Today I currently weigh 179”

10 / 10
Sherm September 11, 2020

For Weight Loss: “I don't like the way phentermine had me jittery and paranoid”

Ken22000 September 2, 2020

For Weight Loss: “Just started taking half tabs phentermine because one made me too jittery irritable last time”

t · Taken for less than 1 month August 27, 2020

For Weight Loss: “I'm 5'10 and when I started on 8/3/20 I was at 249 pounds and began on 15mg phentermine. Very self conscious and all around uncomfortable going anywhere or even taking pictures with my family. Today 8/26/20 I am at 230. I've lost 19 pounds in 23 days. I eat around 20-25 carbs a day and no more than 1300 calories. I do take it early around 9am, because any later and I have trouble sleeping. Mentally I feel more focused and have more energy. I exercise daily on my eleptical and I also walk a lot at work. I'm very happy with my progress and hope to get to my ideal weight by the end of the year or early next year.”

10 / 10
itsme · Taken for less than 1 month August 20, 2020

Lomaira (phentermine) for Weight Loss: “I started Lomaira (phentermine) on 8/13/20. I'm 5'10 and my weight was at an all-time high of 218 when I started. My dr had me start with a half dose (4mg) and half dose of Topiramate (generic Topamax -12.5mg) for two weeks. Then I will move to a full dose of each for the rest of the Rx. I have been drinking a gallon of water a day, eating a low-calorie diet, and doing light exercise daily. My appetite is controlled, my energy is up, and my system is cleansed. I have lost 10 lbs in one week. I do need to take it earlier in the morning because it's hard to fall asleep. But I'm looking forward to feeling like myself again. Best of luck to all of you!”

10 / 10

This information is NOT intended to endorse any particular medication. While these reviews might be helpful, they are not a substitute for the expertise, knowledge and judgement of healthcare practitioners.