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Phentermine and Anxiety: What Users Say (Page 3)

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

Reviews for Phentermine

Commonly mentioned side effects
  • Ell...
  • Taken for 1 to 6 months
  • January 25, 2020

For Weight Loss (Obesity/Overweight) "Last year I took phentermine for 5 months. I lost 30 lbs in the first 2 months. In total, I lost 50 lbs. Beginning weight of 210, obese BMI. Side effects I experienced-when I first began, I took a half dose of 30 mg for a week because jumping right into a full capsule was too much, because it made my heart race and made me feel jittery. Throughout the whole time I took it, my mouth was ALWAYS dry, so I drank lots of water or chewed gum, mainly because dry mouth can speed up tooth decay. My jaw would feel like it had TMJ even if I hadn’t chewed for some hours. I would wake up with sore teeth as though I was grinding my teeth. I was constipated more than usual. I took the pill in the morning so I could sleep at night, it will keep you awake if you take it too far into the day. The side effects were annoying, but the weight loss was great. This medication made it so I never really felt hungry, and if I did, it would hurt my stomach to eat more than a fistful of food."

8 / 10
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  • Zig...
  • Taken for 1 to 6 months
  • November 26, 2021

For Weight Loss (Obesity/Overweight) "I first used phentermine in the 90s. Along with diet and daily walking, I lost weight. It did give me dry mouth and jitteriness and talking nonstop. Years later, I tried taking this medicine again, but it caused severe headaches after a few days. I am 60 F. Desperate to lose the weight, as I had two knee surgeries and a knee replacement over three years ago, I packed on 50 lbs. Up until then, I kept the weight off by walking up to three miles a day. My doctor prescribed 37.5, I started by taking half a pill for 30 days, and it wasn't until I started the full pill that I dropped 20 lbs in 35 days. I do believe the formula of this medicine has been changed, as I don't have the dry mouth or the day-long jitters as before. I have drastically changed my diet, eating low fat, low calories, high protein, and fewer carbs. I am only able to walk short distances due to my knee. Now my weight loss has slowed back down. I plan on continuing the phentermine for the next few months as long as I drop pounds. No, it is not a magic pill, just a jump start."

8 / 10
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  • Sar...
  • April 19, 2017

For Weight Loss (Obesity/Overweight) "I took Phentermine in November and December of 2013 and January of 2014. I went from 178 pounds to 137. 137 is my target weight and ideal weight. I kept the weight off until this past spring/summer (2016). And then went back to my old habits and managed to gain enough weight to put me at 176.2 as of this morning at the doctor. So, I'm 50 years old, 5'6" and weigh 176.2. I started the Phentermine right after the doctor's appointment. I'm a little bit jittery today, loss of appetite is already taking effect, as has dry mouth. I go back to the doctor in 30 days, but I will weigh myself on Wednesdays."

10 / 10
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Frequently asked questions

  • Ano...
  • Taken for 1 to 6 months
  • November 15, 2021

For Weight Loss (Obesity/Overweight) "This drug was horrible. It did help me lose weight, but I only lost 8 pounds in 3 months. I lost more weight other ways. The side effects are horrible, it made me think horrible thoughts such as suicide. I would not recommend this to anyone. The cons outweigh the pros. It makes you feel like you have an irregular heartbeat as well. Very jittery. Angry and not worth it."

1 / 10
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  • Anonymous
  • Taken for 1 to 6 months
  • February 21, 2022

For Weight Loss (Obesity/Overweight) "This medication really helps finish my appetite. With calorie reduction and a daily gym routine, I have been losing about 7 lbs per month on average. I do get a little jittery at times and have dry mouth as symptoms, otherwise, I highly recommend it."

10 / 10
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  • Jes...
  • Taken for less than 1 month
  • July 11, 2017

For Weight Loss (Obesity/Overweight) "Before this medication, my entire life was food and alcohol. My heaviest weight got up to 225 pounds at 5'6" and 21 years old. I was always thinking about the next meal, and it seemed like I was never satisfied unless I had 3 servings. This medication stopped all of that right in its tracks, including my alcoholism. I've been on this medication for 1 month and have lost 13 pounds. Good side effects: happiness, energy, focusing on life instead of food/alcohol. Inspired and motivated. On the latter: just like with strong coffee-if you take it without eating enough, you will feel jittery, light-headed, short of breath, anxious. But bear with it, drink plenty of water, and enjoy being slim!"

10 / 10
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  • Jes...
  • Taken for less than 1 month
  • July 11, 2017

For Weight Loss (Obesity/Overweight) "Before this medication, my entire life was food and alcohol. My heaviest weight got up to 225 pounds at 5'6" and 21 years old. I was always thinking about the next meal, and it seemed like I was never satisfied unless I had 3 servings. This medication stopped all of that right in its tracks, including my alcoholism. I've been on this medication for 1 month and have lost 13 pounds. Good side effects: happiness, energy, focusing on life instead of food/alcohol. Inspired and motivated. On the latter: just like with strong coffee-if you take it without eating enough, you will feel jittery, light-headed, short of breath, anxious. But bear with it, drink plenty of water, and enjoy being slim!"

10 / 10
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  • Nik...
  • January 13, 2020

For Weight Loss (Obesity/Overweight) "I’ve taken Phentermine in the past and lost 30 pounds with no side effects. This time around, it landed me in the hospital. I started taking it on 1/5/2020 and felt fine that day and every day until 1/9/2020. That morning, I started to feel anxious. My mouth was also dry and felt like my throat was constricting. My pulse was elevated, and I was experiencing palpitations. I went to the hospital and was told to stop the medication and let it clear from my system. The following day (1/10/2020), I still had an elevated heart rate and episodes of anxiety. It didn’t feel like my throat was constricted anymore. Later on that night, I developed a crazy migraine that went away after a couple of hours. When I woke up on 1/11/2020, I had another migraine accompanied by a tingling sensation on my face. I felt like that the entire day. It was the worst feeling ever. I then started to feel tingling in my arms and legs. On 1/12/2020, I no longer felt any symptoms. My head just felt sore."

1 / 10
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  • Lan...
  • January 10, 2020

For Weight Loss (Obesity/Overweight) "Phentermine does work. I lost 25 lbs in 5 months. I gained 5 back. (You will gain all of it back if you do not change your diet and exercise routine.) Side effects: mood swings and high blood pressure. After I stopped taking it, (I do not advise you stop cold turkey) the withdrawals were immense. I got cold sweats, anxiety, and heart palpitations. My abdomen, ribs, and lungs 'hurt.' It also felt like my ribs were breaking and my lungs had 'holes' in them. I've been off phentermine for two months, and I'm still having minor issues with my nervous system and hormones. I recommend Benadryl if you're having any of the same issues. I know it sounds far-fetched, but every time I've taken Benadryl, the 'withdrawals,' or whatever they are, have completely stopped, and each time they come back, they are less intense than before. I would only recommend this pill to get a jump on your weight loss plan, not a stand-alone means to lose weight."

8 / 10
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  • RMP...
  • September 16, 2016

Phentermine for Weight Loss (Obesity/Overweight) "I'm 5'5", 240 lbs. After years of exercise and dieting, I just could not seem to lose more than a few pounds. My doctor and I decided I should try Adipex. I just started taking it yesterday (9/15/16). I've noticed a few side effects even just with the first dose. I have a bit of a dry mouth, and it has caused insomnia and a bit of jitteriness too. Granted, it was my first pill, so I'm hoping these will subside after a few days. It has curbed my appetite, and I've noticed an increase in energy. Now I'm not sure if it was due to the medication, but by 5/6:00, I started to feel like I was crashing a little bit. I don't want to give this a rating yet, being as I just started, so I will update at a later time."

8 / 10
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  • Jac...
  • March 21, 2017

For Weight Loss (Obesity/Overweight) "Spent the last year eating very healthy and exercising with very little weight loss results. I got desperate last week and went to a weight loss clinic and got on phentermine and B12 injections. Weighed in last Tuesday at 169.7 lbs and went in for my one-week check-up and weighed 165.3 with jeans on, and last time I was wearing shorts, so I've lost about 4.5 pounds in one week. You have to push through the first three days of jitteriness and insomnia, and then it levels out and you feel normal. I have experienced some pretty gnarly dry mouth despite how much water I drink, but it's worth it if these results keep up. I'll update again in a couple of weeks!"

10 / 10
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  • Get...
  • Taken for less than 1 month
  • January 15, 2017

For Weight Loss (Obesity/Overweight) "I started taking phentermine 3 days ago, and I am already down 5 pounds following the 1,200-calorie diet that was given to me. I am 5'9", started at 217 lbs, now 212. Also, I am 30 years old. I was thin most of my life until I lost all control of my eating while pregnant. I also have a history of depression and anxiety, and I actually feel better on phentermine. No anxiety attacks and feeling very happy. It seems to be working well. The prescribing doctor did tell me that it is very important to keep up on the water, no less than 8 bottles a day. Maybe those having trouble losing will find this helps them. Good luck to all!"

10 / 10
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  • Sne...
  • March 15, 2016

For Weight Loss (Obesity/Overweight) "I've been on phentermine 37.5 mg once daily for 9 weeks. The first week was rough: lots of headaches, irritability, with an easily evoked 'fight or flight' response. Although I will say that when I was feeling irritable and unreasonably mad, I was well aware of my behavior and knew it was a side effect of the med. I also have underlying mild anxiety/depression, which has gotten considerably more challenging on this med. I do take Zoloft 100 mg daily. All in all, between the weight loss and endorphins from exercising (30 min daily), it made it a lot easier to handle. For all of my time on this med, sleeping has been challenging. I have to wait a good 17-18 hours after taking the med before I can sleep. I tried taking half a pill, and it was totally ineffective. I have always been prone to dizzy spells when standing up quickly or squatting and standing: this med intensified that effect big time. But after 4-5 weeks, that side effect was much less. Dry mouth is also still very common. I don't mind as it encourages me to drink more water! All said and done, it's been 9 weeks, and I've gone down 37 lbs with little effort, and I still have zero appetite. I eat because I am supposed to, not because I am hungry. The effectiveness has only decreased around 15-16 hours after taking the pill. I am 31, starting weight 252. I am a huge fan of this med. The side effects are manageable and well worth the 37 lbs loss. Diet-wise, I'm doing low carb/low fat/low calorie. I go out to dinner 1-3 times a week and drink minimal to no alcohol. I did not have any spikes in blood pressure either. The initial stimulant effect went away quickly, I just feel like my normal self when I take it. The most important part of this med to me is that it takes away ALL my cravings. Yes, it destroys my appetite, but being hungry was never the reason I overindulged in the past. This med makes food indifferent, so I use it as I should: as fuel, not for pleasure. Also, you will get a prescription for 3 months as it is intended to be a short-term medication due to the side effects on your heart (read packet insert for details). If you have high blood pressure, you cannot take this. Feel free to ask any questions! I am in no way affiliated or endorsed by this med and have posted this review of my own accord."

10 / 10
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  • TT7...
  • Taken for 1 to 6 months
  • November 26, 2016

For Weight Loss (Obesity/Overweight) "I started taking phentermine just a little over a month ago, weighing in at 307. My doctor started me out with half a 37.5 mg pill 2x a day. I immediately felt the medicine start working, the jittery, jumping-out-of-your-skin feeling, and I had a lot of energy the first few days. I sweated profusely and had to have water by my side at all times. I felt the meds even out, and by the 5th day, I was asking my doctor to let me take a whole pill once a day. I make sure I take my dose early when I first wake up. So, in about 5 weeks, I have dropped down to 293. This drug is life-changing for me. I should be on disability, and I'm in chronic pain, but this medicine has seemed to help me beyond the appetite suppressant. I'm a 40-year-old female with hope!"

10 / 10
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  • Mam...
  • August 9, 2019

For Weight Loss (Obesity/Overweight) "This is my 2nd time taking this pill. The first time I took it every day for 3 months. I lost 32 lbs, was full of energy, and could not sleep. It was great for me, as I have kids who are always on the go. I took melatonin to go to bed, or I would just stay up all night. This time around, I started taking these for about 4 days. About the 3rd day, I was feeling super down and depressed, had a dry mouth, and my anxiety was through the roof. I couldn’t sit still and was always biting the inside of my bottom lip. I have stopped taking this pill and will be going to the doctor for something different. WARNING: If you already have anxiety, this pill makes it worse!!!!"

8 / 10
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  • MF ...
  • July 6, 2016

For Weight Loss (Obesity/Overweight) "Female, 37 yrs, starting wt 263/ending wt 230. Was on phentermine 37.5 for 3 months. Lost 15 lbs first month, 10 second, and 8 the last month. Only dealt with jitteriness, insomnia, dry mouth for the first 2 weeks. I made sure to take the pill early and would take a half pill periodically if side effects were bothersome. By the end of the first month, side effects were gone except for constipation, and I was able to maintain 1400-1600 calorie per day goal. Around week 7 or 8, I noted that my appetite was not very suppressed, so I would eat breakfast and take the pill 30 minutes before lunch. This seemed to boost the appetite suppression for me. I walked 4-5 miles about twice a week. Hoping to continue diet and weight loss after stopping phentermine."

8 / 10
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  • RJa...
  • Taken for less than 1 month
  • October 27, 2019

For Weight Loss (Obesity/Overweight) "41 yrs old, 5'11" and 268 lbs. I have a history of BED (binge eating) and struggled with bulimia from ages 18-30. I still, once a year or so, will binge and purge when under high stress. I started phentermine a week ago, and my results are positive. There is a decrease in appetite, I have no desire to binge eat, I drink a lot more water, I am drawn to smaller and healthier portions, and I find I have more energy. I'd rather go for a walk or organize my closet rather than sit on the couch. My sleep has not been affected, I'm not constipated, and I don't feel the nervousness or increased heart rate others experience. I'm excited to go back to my Dr. after a month and see the results from the scale."

9 / 10
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  • C_B...
  • Taken for 1 to 6 months
  • September 10, 2017

For Weight Loss (Obesity/Overweight) "SW: 260, CW: 205, GW: 160. My doctor prescribed phentermine on May 15, 2017. I have been taking half of a 37.5 mg pill in the morning and half in the afternoon. That, coupled with daily exercise and a 1,400 calorie diet, has resulted in a 55 lb weight loss in 4-ish months! There are side effects: nervousness, elevated heart rate, dry mouth, and constipation. However, these can be handled via your healthy lifestyle! Drinking about 4 liters of water a day solves the dry mouth and some of the nervousness (just always carry a water bottle with you). For the constipation, I just take fiber gummies twice a day, and it does the trick! This has been an amazing health journey! If I can do it, you can too! Keep working hard!"

10 / 10
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  • Ann...
  • Taken for 1 to 6 months
  • February 4, 2014

For Weight Loss (Obesity/Overweight) "I have used them since October. I couldn't lose weight, needed a bit of help with the passing of my mom. I am a stress foodie. I went to the doctor and told him I needed help. How about the lap band? He took my vitals, my weight, BMI, pretty much a physical, and told me my BMI had to be 40 in order to get the lap band, mine was 32, so he prescribed me phentermine. I have anxiety, so I take 1/2 a day. It makes you choose better food. You eat healthy. I sleep better now than ever. Lost 40 so far."

10 / 10
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  • Plu...
  • Taken for less than 1 month
  • May 23, 2014

For Weight Loss (Obesity/Overweight) "Have been on it two weeks today. Starting weight 211 (I am 5'1" tall). I'm down nine pounds. Lost six of those the first week and three the second. Doing it in combination with a low-carb diet. Haven't exercised yet, but I'm thinking I better start. Side effects: dry mouth. At the start, I felt a little jittery and very talkative, but those side effects have subsided. No insomnia or racing heart. It has helped tremendously with my snacks and cravings. I am a nervous chewer and would snack all day long at work on sugary stuff and often wash it down with a soft drink. Now, I drink water at work and have one snack (usually an Atkins bar or other low sugar product), and I get through just fine. No gnawing hunger pangs."

10 / 10
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  • Anonymous
  • August 21, 2009

Phentermine for Weight Loss (Obesity/Overweight) "This drug works well while you take it, but if you are looking for lasting results in weight loss, this is not the fix. There are side effects such as feeling uneasy, hyper, and an inability to sleep. Also, the longer you take this medication, the less it works. This may be a good way to start your weight loss, but you must be prepared to make lasting changes for the results to last."

7 / 10
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  • Ali...
  • Taken for 1 to 2 years
  • September 17, 2019

For Weight Loss (Obesity/Overweight) "I have been taking phentermine on and off since May of 2018. I started off at 246.9 lb and now weigh 189.00 lb. It has worked wonders for me, but the only downside I can say is... I feel like if I don’t take my phentermine every single day and stop taking it, I get severely depressed and in my head. I can also say that ever since I started taking it, I feel that my anxiety has been happening more often than it used to. I also want to include in here for general purposes... I have been through a lot the last year and some change. A baby, one miscarriage, and a blighted ovum (miscarriage) and a separation. These could also be a reason why. Just curious if anyone else has had the same issue as far as feeling depressed and anxiety?"

8 / 10
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  • Anonymous
  • September 7, 2012

Phentermine for Weight Loss (Obesity/Overweight) "After suffering from bulimia for many years and not being able to control my binge eating, I started taking Fastin. I only take 1 1/2 pills a day (I'm only 115 lbs and not looking for significant weight loss), and that is enough to help me fight my urge to stress eat. In fact, when I was taking 2 pills a day, I found myself forgetting to eat. I still feel a little jittery after taking them."

10 / 10
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  • Apr...
  • Taken for less than 1 month
  • July 31, 2019

For Weight Loss (Obesity/Overweight) "Been on this drug just about a week or so and have already lost 6 lbs, which is amazing! The con is that I am an anxious mess. My head hurts, and my mood has shifted. Wondering if this will go away or not. I'm not sure I can take feeling like this long term."

5 / 10
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  • kit...
  • August 2, 2015

For Weight Loss (Obesity/Overweight) "I started taking phentermine on 07/21/15 at a starting weight of 136. I am very petite at 4'9" and wanted to go back to my usual weight of 115. Today is 08/02/15, and I am down to 127. I have been somewhat dieting and exercising once every few days. Only downside to the medication is the extreme dry mouth and it makes me very jittery the whole day. I take 1 pill every morning."

9 / 10
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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.