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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 201 reviews 54 medications
   
9.2
Weight Loss 1047 reviews 24 medications
   
9.0
Summary of Phentermine reviews 1248 reviews 9.1

Reviews for Phentermine

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For Weight Loss: "This is my second time using phentermine in 2 years. The first time I lost 30 pounds in 5 months, but the side effects were terrible the first time around! I would sweat just sitting down, I was jittery, dizzy, and had headaches. I gained back about 15 pounds since then, and decided I'm going for it again. I was expecting the same symptoms to come back (I have the same dosage as before) but side effects this time!! I got the generic phentermine, and I like it WAY better! All it has done is decrease my appetite, and give me energy. No dizziness, or getting sweaty, or feeling like your on some crazy drug... just appetite control! I started at 254, and four days later I'm at 247!"

   
10

HMD91593 May 23, 2015

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For Weight Loss: "I started taking phentermine 37.5 today. I have read a lot of comments here, but I don't think I have read of anyone else taking topiramine with the phen. This is my first time on either drug and am pretty impressed so far. I have had little to no appetite today and have had to force myself to eat. I am diabetic, so I am no stranger to carrying a bottle of water. Any suggestions to help me get the most out of phen would be greatly appreciated."

   
9.0

AsphaltAngel May 23, 2015

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For Weight Loss: "This is day one on Phetermine I weight 164 and am 5'1" I want to loose about 25-30 lbs. I have heard great things about this medicine. Mine was a bit pricy but I really need to loose this weight. I will keep you guys updated I tend to weigh myself every week. So next weigh in would be 29 May 2015."

Joevanuh (taken for less than 1 month) May 22, 2015

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For Weight Loss: "I started phentermine 5/13/15 ... 37.5mg Starting weight was 167lbs. I had my first baby 8 months ago and gained a whopping 63 pounds! My doctor suggested this pill and so far I love it! I weighed myself today for the first time since I started and I lost 14 lbs in just 8 days!! I am beyond excited and have been able to notice change which gives me some hope to get back to normal! The first day I took it it was a crazy feeling and I didn't think I liked it, I was also up till about 4:30 am that morning. But now a week later the only side effect I have is slight dry mouth and I've had a couple small headaches. I love how it completely takes away my appetite which makes me not crave any junk food and I'm able to eat healthy small portions!!!"

   
10

Anonymous May 21, 2015

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For Weight Loss: "I started 15mg phen today. I have tried it before and lost 25 lbs. I was also jogging almost daily from 4 to 10 miles. I was content to stop taking phen and reaching the rest of the goal on my own. I needed gall bladder surgery (prior to phen) but since my surgery I gained my weight back. I've tried many things to lose and became frustrated once again when nothing seemed to work. I felt so content and happy with my results before. Hoping for the same results. I love the feeling of confidence in myself and want it back. I am 163 and 5'2. Built like a football player - I will keep updated."

   
10

spiderhaven (taken for less than 1 month) May 21, 2015

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For Weight Loss: "I started this pill on 4/13/15. At that time I weighed 168, my height is 5'1". As of 5/21/15 I have lost 11 pounds. This pill definitely helps to curb your appetite and give you an energy boost. I think it's super important to setup good eating habits and a solid exercise routine while you have the extra energy, especially since this isn't a pill you'll be able to take long term. Use it to your advantage!! Good luck all, sounds like everyone is doing really well. Yay us!!!!"

   
9.0

nicnalo May 21, 2015

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For Obesity: "I started phen one week ago, after dieting and exercising for 11 weeks and only losing 10 pounds. I'm on 37.5 mg dose. I started phen on May 14 at 179lbs. I'm down 5 pounds! I have exercised twice. I've have serious dry mouth, headaches for a week, but yesterday, no headache. Twice I've felt mild numbing in my face, and constipation. The following may be too much information - you are warned . I also started my period 4 days ago, experienced HEAVY bleeding, for the first 2 days, like having to change my pad every hour and a half because I bled through to my clothes. I'm not sure if it has anything to do with the medication, but it's not normal for me. But it's not bad enough to make me stop taking it!"

   
8.0

Mirgel (taken for less than 1 month) May 21, 2015

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For Weight Loss: "I once lost 60 pounds in six months on this medicine I was amazed at how well it worked. that was several years ago, I recently, actually just this week started taking it again can't wait to see if it works as well this time"

   
10

KSPD May 21, 2015

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For Weight Loss: "I had results taking phentermine; I immediately had energy and felt like my old self again, as I had been recuperating from a joint replacement and had put on nearly 25 lbs! The weight came off slowly, about 2-3 lbs a week at first. By the 5th-6th week, I noticed I had lost 12 pounds. I'm now into my 8th week and have lost a total of 17 lbs. I really feel phentermine boosted my metabolism, which has always been slow, as well, as I have not been able to do much exercising due to the surgery. Hopefully I can continue taking phentermine so I can reach my goal to lose 30 lbs."

   
8.0

NanW May 21, 2015

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For Obesity: "Medication started May 1st. I take 30mg in the morning around 7:30. First couple nights I couldn't sleep and I had headaches but both subsided. I have changed everything. I'm 5'9" 333lbs to start. Today I weighed in at 317. I decided while taking this to get a grip on snacking and eating etc. I'm eating healthier still the same stuff I would normally eat but now I'm eating 1300 calories a day with the help of my fitness pal. I'm also exercising 30-45 minutes a day. I rotate workouts, I'll do aerobics, use the treadmill, ride a bike, or go swimming. Swimming laps is my favorite because I feel less tired after. But even if I use the treadmill at night 9pm, when I get done I still have so much energy I tend to dance to to continue my cool down"

   
10

ACJ579 May 20, 2015

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Adipex-P (phentermine) for Weight Loss: "Start of 2015 my weight was 262 and I am 5'5, I started going to the gym and eating right and lost only 4 pounds in 3 months. I went to the Doc and he put me on adipex 37.5 first month I lost 21 lbs. I am on week 2 into the 2nd months and down 5 lbs . Dry mouth and headache in the first month but haven't had a problem in the 2nd month."

   
10

kcboo (taken for 1 to 6 months) May 20, 2015

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For Weight Loss: "Started the medicine 5/18/15 at 176 and weighed myself 5/19 and was down to 172.8! Crazy to think that happened in just a day! Can't wait to weigh myself in a week :)"

   
9.0

Jenjen16 May 20, 2015

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For Weight Loss: "I went to a weight loss clinic on 5/15/2015 and received a "super slim shot" and a prescription for 37.5 mg phentermine. I filled the prescription on Saturday and started taking the pill on Sunday, so this is day 3 on the pill. So far I have not been hungry at all, I still force myself to eat a greek yogurt in the morning, and snack on mixed nuts throughout the day, and eat protein for dinner, which I have to force because I am still not hungry by dinner, I may eat a chicken breast. I am 5'3 and my starting weight on Friday was 187, and I weighed myself last night just to see, and I was down to 183.8 so in just a few days I was down 3.2 lbs,, but I know weight will fluctuate so I am giving it time before I really consider anything lost."

   
9.0

Hopingtolose (taken for less than 1 month) May 19, 2015

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For Weight Loss: "I began phentermine on 5-5-15.As of today 5-19-15 I have lost 16 pounds.I take the 37.5mg dosage.The first 2 nights I had insomnia but that was it.I also do have a dry mouth.That just makes me drink more water which is a good thing.I have energy to be more active.I walk 3 miles 5 days a week and also follow a 1200 calorie low carb Paleo eating plan."

   
10

jackie2222 May 19, 2015

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For Weight Loss: "I started taking Phentermine 30mg on 3/18/15.In the first month of using the medication, I dropped 13lbs (229lbs to 216lbs).The initial side effects I experienced included dry mouth, insomnia, and mild headaches. After the first couple of weeks, the only remaining side effect I experienced was dry mouth. This is actually a pretty beneficial side effect as it helps me drink more water. The next month, my doctor bumped me to the 37.5mg medication. During that month, I lost 12 more pounds (216lbs to 204lbs).So overall, I've lost 25lbs in two months. I'm elated! My first goal is to get to ONEderland (i.e.,finally be under 200lbs).It's nice to actually see some progress.I have hypothyroidism, so weight loss has always been difficult. This helps!"

   
10

Aiming for ONEderland (taken for 1 to 6 months) May 18, 2015

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For Weight Loss: "I went to my doctor for Phentermine awhile back and he wouldn't give it to me. He said I could do it on my own and that I didn't have much to lose. WELL fast forward a year and here I am on Phentermine On and Off since March. I definately notice and feel a difference. People have noticed a difference as well. I lost about 15lbs since March. I did stop it for a few weeks and gained some back but now I'm losing again. It Definately helps curb your appetite and I may stay on this pill until I get to my goal weight because I notice I eat more when I am not on it. this is not a quick and easy pill for weight loss. Granted you will lose a lot of weight as it will suppress your appetite but don't think its easy. Good luck to all I recommend it."

   
8.0

Lauren Ryan May 18, 2015

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For Weight Loss: "It's early morning on day 4 of this medication. I've lost 7 pounds and have had no cravings at all! I have eaten 3 small to modest meals a day...after reminding myself...and have not ruminated about food at all. I seem to have more energy too. Not sure if I'm just excited to see such quick results, which is motivating in itself, or if that's a side effect. Will update at end of 1 week. Paid for this out of pocket...only $30 for 1 month...not bad!"

   
10

Anonymous May 18, 2015

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For Weight Loss: "I've been on an off Phen the first time I started using the Pill Oct of 2014 I was 213 and lost 23 pounds in a month an half. I stop the pill mid Nov and re gain 10 pounds. I started to take the pill today 05/16/2015 current weight is 200lbs and hoping I can reach my goal this time and loose 50 pounds.. The pill works amazingly it definitely take your hunger alway and gives you tons of energy! My goal is to loose 50 pounds "

   
10

Hab_30 (taken for less than 1 month) May 17, 2015

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For Obesity: "I started Phentermine 37.5 on 5-8-15 at 228lbs. Weighed in on 5-14-15 at 219 pounds. Thats 9lbs in 1 week. First 3 days I experienced a headache, dry mouth and jitters. After that no side effects. I'm looking to get to 155lbs. It curbs my appetite and allows me time to make choices on what I will eat. I will post more progress in 2 weeks."

Wanda83 (taken for less than 1 month) May 15, 2015

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Fastin (phentermine) for Weight Loss: "I started taking fastin the end of April 2015 it's now May 15th and I have lost 13lbs not doing anything different just taking the pill. I love it!"

   
10

Missy F May 15, 2015

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For Weight Loss: "I weighed 285 when had my first daughter in February of 2013. I lost all my baby weight and got down to 255 but quickly gained most of it back from the breastfeeing (exclusively breastfed for 15 months. I had daughter number two in November 2014 and weighed 278. I quickly lost the baby weight once again and got down to 255 but had even worse cravings this time (breastfed only 4 months). Even after I quit breastfeeding my cravings continued. I felt like I was always hungry, nothing satisfied me and I could never get full. Not to mention my energy level was lower than ever. I joined the ymca but didn't have much luck with that due to my eating habits and lack of energy. I started Adipex yesterday (May 13) and weighed in at 275. WILL CONTINUE"

   
10

Sierra B. May 14, 2015

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Adipex-P (phentermine) for Weight Loss: "I started Adipex 11 days ago and have currently lost 15 lbs. I take 1/2 pill in the morning and the other half at lunch. I drink lots of water and refrain from sweets and fried foods. I exercise once a week. Very impressed!"

   
10

Anonymous May 13, 2015

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For Weight Loss: "So excited, I started phentermine, on 5/12/15, Weighing a whopping 282lbs, The largest I've ever been. So far have had a lot of energy, always thirsty, only for water tho, I've completely cut out sugars, snacks, and fried foods, been riding 1mile on exercise bike per day. I'm praying for good results, my 1st weigh in is scheduled for 6/10/15. This is my first time trying phentermine. I slept really well last-night, And overall I feel great. I'll Keep you guys posted."

LAYDIE TEE May 13, 2015

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Fastin (phentermine) for Weight Loss: "Fastin is an excellent dietary supplement for me. In the morning, right as I wake up, I take the little guy. The pill tastes like what I would imagine what baking soda would, but oh well, I am not sucking on it. It takes about 20-30 to give the first kick. That kick is the rush that says "I need to get moving or I need to get to the gym." The first time I took the pill I did get a little jittery and nauseous but once I started working out and drank water I started to feel fine. About an hour in I hit phase 2. Phase 2 is the spunk and mood booster. I feel awesome and amazing like I know what I am working for. Again, first day I felt a little dizzy and euphoric. Then there is phase 3 the come down. Drink water and eat a solid. I lost 100lbs."

   
8.0

happythighs (taken for 1 to 6 months) May 13, 2015

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For Weight Loss: "Today makes 3 days on Phen.. I started in the afternoon. The first day it worked great.. Day 2... I ate breakfast around 9 ish, an took a 1/2 pill 30 mins later an a 1/2 again around 400 pm.. it worked great.. I was not hungry at all, no headaches which I got my last time on phen.. I did have some dry mouth around 9 or 10pm, but went to bed as usual. Day 3.. back to work took pill around 830 after breakfast, I was kind of hungry around lunch.. which is 1130 so I tried to space the time between pills so I took it around 1pm with a snack.. Today I want to eat more.. so I am going to opt for taking it as I did day 2... I need to incorporate more water, but have lost 2 pounds in 3 days.. I have not worked out, but have walked moderately..."

   
8.0

AimingToBeHealthy!! May 12, 2015

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