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Phentermine and Insomnia: What Users Say (Page 5)

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

Reviews for Phentermine

Commonly mentioned side effects
  • Gia...
  • Taken for 2 to 5 years
  • October 4, 2019

For Weight Loss (Obesity/Overweight) "Phentermine was the only way I was able to lose 75 lbs. The medication completely killed my appetite, allowing me to pick my foods based on nutrition rather than because they 'taste good' or because I'm bored. I experienced the following side effects, but I would rather suffer with these than the inability to lose weight: Headaches (severe sometimes), Dry Mouth, Dehydration (I have to constantly remind myself to drink water all day), Mania (for about an hour after I take the pill), Insomnia (if taken past 3 pm)."

10 / 10
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  • Cmo...
  • Taken for less than 1 month
  • February 24, 2019

For Weight Loss (Obesity/Overweight) "I have only taken this pill for 11 days now, and in 11 days, I am already down 6 lbs. It has greatly reduced my appetite, which I have never had success with in any other weight loss pill. I do have a slight headache, but I am not sure if it’s due to this pill or the other one I am weaning off of. I am experiencing some insomnia, but over the last two nights, it has been better, so I am hopeful that will decrease as time goes on. I have way more energy. No dry mouth. No nausea. Due to being gone 11-12 hours per day for work, I am not working out. I am paying attention to portions, but otherwise, I have not changed my diet much, but I am still seeing results. Very satisfied so far."

9 / 10
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  • Rir...
  • Taken for 1 to 6 months
  • April 30, 2014

For Weight Loss (Obesity/Overweight) "Progress so far: I started phentermine on 1/7/2014 and weighed 185. I took the pills every day for the first week, then gradually decreased the number I took until now I am only taking them as I feel it is necessary. As of 4/29/2014, I weigh 157 lbs. Diet and exercise: I ate about 1,400 calories a day, and on top of a job in retail (I am on my feet all day), I work out for at least an hour, 5-6 days a week. Personal suggestion: Only use phentermine as a tool to help you change your unhealthy lifestyle. It is NOT a miracle weight loss pill, but a useful tool. Side effects: Other than occasional irritation (often if I forgot to eat for a while) and mild insomnia during the first few weeks, I have experienced no negative side effects."

10 / 10
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Frequently asked questions

  • Bri...
  • December 30, 2016

For Weight Loss (Obesity/Overweight) "I started phentermine 37.5 mg on 12/20/16 @ 8 am and just felt lightheaded, insomnia for the first 4 nights, and seemed to forget things during working hours. Now it is 12/29/16, and insomnia has decreased. Cotton mouth since day one and constipation are increasing, though. I haven't been able to exercise yet due to knee pain. But meal portions are very small, and lots of water intake at least 2 liters a day. Initial weight: 193, right now at 186. Will keep you posted."

6 / 10
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  • Aun...
  • Taken for 1 to 6 months
  • October 21, 2017

Phentermine for Weight Loss (Obesity/Overweight) "Well, I have been on Adipex-P since the beginning of August, and I have lost 39 pounds. I have adjusted to the pill and don't have sleepless nights or dry mouth. This pill is amazing for appetite control. I take it early morning and don't get very hungry throughout the day. I keep a healthy snack with me and nibble on that. For dinner, I pretty much eat what I want, but I portion it out to smaller servings. I drink lots of water too. The people I work with are amazed at my results. My doctor even said she hasn't had anyone with results like I have had. If you are looking for a good diet aid, this would be it. I wish I would have found this miracle pill sooner."

9 / 10
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  • The...
  • Taken for 1 to 6 months
  • March 3, 2016

For Weight Loss (Obesity/Overweight) "I started taking Phentermine 37.5 mg Jan. 21. I am a 51 yo female, 5' 3'. On that day, I weighed 193 lbs. Weighed in again today, and I was 177. So far, so good. I am eating between 900 and 1200 calories a day. Very lean and nothing complex: yogurt, salads, chicken, SlimFast meal replacers, steel-cut oats, lots of fruits and veggies. Since Jan. 21, I have only had pasta and rice 4 times. I drink a lot of water! I walk on the treadmill for 30 minutes a couple of times a week. I hate working out in the wintertime. As for side effects: At first, I had a hard time sleeping. My mind would race... felt like I was on speed. Now, it is just always thirsty, and now and again, I clench my jaw way too tight. Very happy with my progress."

8 / 10
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  • Mom...
  • April 18, 2015

For Weight Loss (Obesity/Overweight) "So, I am on day 3. I started my weight at 167 and am 5 ft 5 in. I am down to 165. That's a 2-pound drop in 3 days. I like to add that the majority of the large weight loss at first is not fat... It's water weight. It's usually the first to go on any diet. As for the phentermine, I feel great. No major side effects. I'm not anxious, I'm not moody, and my heart is not racing. I'm on 37.5 mg. I'm also getting the lipoplex shot with B12. I am on a 1300-calorie-a-day diet (no sugars), and am exercising by walking 3 1/2 miles a day. So far, my only complaint is sleep... I doze off, wake up, doze off, etc. Last night, I took melatonin, and it helped a lot! Doc said it was okay to take. Look forward to seeing my results in 30 days."

9 / 10
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  • Amb...
  • Taken for less than 1 month
  • March 2, 2017

Phentermine for Weight Loss (Obesity/Overweight) "I started this pill on 2/24/17. So far, I have lost about a pound a day. I only eat 1,000 calories a day and exercise whenever I get up early enough. I have experienced some terrible side effects, which include dry mouth, insomnia, tingling in my left leg, jitters, and headaches. The side effects are terrible, but I've looked up ways to deal with them: dry mouth, I drink a bunch of water, insomnia, I take ZzzQuil, jitters, drink more water and take deep breaths, headaches, I take pain pills. Does anyone know how long before my body gets used to this medication and the side effects go away?"

8 / 10
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  • Hon...
  • October 5, 2013

For Weight Loss (Obesity/Overweight) "This is so awesome reading everyone's reviews. These are real reviews to me. You read other diet ads, they are not real. I started in late August 2013. I have lost a total of 15 lbs so far! Looking to lose more. I was near the 200 lb mark. It's been like that since I had my last child in 2005. All this time I had been working out, I saw no changes. I needed a change because I have insulin resistance. That is scary to me. Diabetes runs in my family, both parents. I love this pill! It's amazing how much energy I feel. I did feel jittery when taking it at first and not feel hungry, but I ate anyway. I watch what I eat. Insomnia and dry mouth. Drink lots of water. I just want to feel better about myself."

10 / 10
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  • Jha...
  • Taken for less than 1 month
  • March 21, 2018

Phentermine for Weight Loss (Obesity/Overweight) "Today is 3 weeks on Adipex. Symptoms have pretty much subsided, but at first, I was having trouble sleeping. I had a little bit of increased heart rate and random numbness in my arms and hands. I also still feel cold a lot, but nothing unmanageable. My start weight was 182 lb, I'm down to 168 lb. Goal weight is 130 lb. I've cut my calorie intake way down: no breads or sugars, no pop. The medicine does give me a really bad dry mouth, which is good for me because I want nothing but water and lots of it! I do still feel hungry on Adipex, which is good, but it's cut my cravings and my appetite, so I eat small portions of good, healthy meals and healthy snacks in between! I'm excited to see where I am at 8 weeks."

10 / 10
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  • RSS...
  • Taken for less than 1 month
  • February 27, 2017

For Weight Loss (Obesity/Overweight) "Started this medication exactly 1 week ago, and I'm down 7.4 lbs (237.6 down to 230.2). I was given the 37.5 mg pills but have only been taking half. My doc told me to take 1/2 pill as long as I could if it was still working for me. It has 100% curbed my appetite. I literally have no urge to eat, which is so unlike me! And when I do eat, I am full so much sooner. I am drinking a ton of water with it. The first 2 nights, I had a lot of trouble sleeping, but I learned to take my pill before 8 am and I'd be fine. I have had constipation, which still hasn't really resolved, but I'm just going to increase my water and hope that improves. Will keep posting with my weekly progress!"

9 / 10
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  • JTS...
  • July 27, 2017

Phentermine for Weight Loss (Obesity/Overweight) "I'm on day 7 of the medication and down 8 pounds. No desire to snack, and I'm full very quickly. I'm not experiencing increased energy, but I'm sleeping less. I started at 244.4 and I'm down to 236.4... Fingers crossed this weight loss continues!"

10 / 10
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  • all...
  • Taken for less than 1 month
  • June 21, 2014

For Weight Loss (Obesity/Overweight) "Started 6/1/14. Down 18.8 pounds. Highest weight 385 lbs. Because of how big I have gotten and some knee and foot injuries, I've not started exercising yet. I want to lose a little more so I can feel like it. But these pills...the first week I could have moved mountains. I had so much energy and insomnia. But that has subsided. I take 37.5 mg, a half a pill 30 minutes or longer before breakfast. Another half, depending on what time I have gotten up, and another half about an hour before supper. If I don't take that last half pill, I won't make it until bedtime. And right before bed is when I ate the most. No cravings. No sweets or snacks. Only 3 meals a day. I do get hungry. But as long as it's working, a little hunger ain't going to bother me."

10 / 10
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  • Sho...
  • Taken for 1 to 6 months
  • September 25, 2019

For Weight Loss (Obesity/Overweight) "I am a female who is 5'1", 43 years old, and have gone up and down with my weight since I was 14 years old. I’m done with that. Taking Adipex this time and being conscious about what goes inside my mouth, counting calories, doing 16:8 intermittent fasting as well as 48-hour liquid-only fasts once a month, working out 3-4 times a week for 1 hour, and giving myself positive daily reinforcement that I can and will do this once and for all has so far worked. I’ve been on Adipex for 3 months and have so far lost 20 lbs. I have a goal weight in mind, but will see how I feel when I get there. The positives of Adipex far outweigh the negatives, those being dry mouth, insomnia, and some moodiness/irritability. After the 2nd month, I started taking the 37.5 mg pill every other day, and that has proven effective and works just as well."

8 / 10
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  • bri...
  • Taken for less than 1 month
  • September 20, 2015

For Weight Loss (Obesity/Overweight) "I have always been a thicker girl. In high school, I was 5'6" and 150 lbs. I looked great! People called me tiny on occasions. When I turned 20, I was diagnosed with PCOS. I don't get periods but maybe twice a year. This has made me gain weight like crazy-I'm now 25 years old, 5'7"/250 lbs. I did research about 4 months ago on phentermine, as a girlfriend of mine had great success. I figured, why not?! So far, everything is great. I've been on phen for 3 months as of yesterday, weighing at 218! No bad side effects for me. The first week had a little insomnia, but not bad. Dry mouth, but I chew gum all the time, so I don't really notice it."

10 / 10
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  • Swe...
  • Taken for less than 1 month
  • December 16, 2016

For Weight Loss (Obesity/Overweight) "I just started my 37.5 on 12-12-16. Today is Day 4, and I'm down 5 pounds. The first 2 nights I had horrible insomnia, but on Night 3, I slept pretty well, and I'm expecting even better tonight because, for some reason, the effects wore off at like 6 pm today, and I had to resist snacking! This is the 1st day it has worn off early. The only other symptom I've experienced is dry mouth."

7 / 10
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  • har...
  • Taken for 6 months to 1 year
  • July 1, 2017

For Weight Loss (Obesity/Overweight) "In 2012, I was about 225 pounds. I had high blood pressure, but I think that was brought on by RA (since 2007). I finally asked my doctor, the new endocrinologist at the local medical group, who diagnosed my hypothyroidism too, if she could prescribe something to help me. I started on 12/19/2012, and with diet, exercise, and phentermine, I went from 217 to 155 (62 pounds) by 11/30/13. It was work, but phentermine cut my appetite to zero and boosted my energy to 10. I never felt sick, and as long as you don't take it after like noon, you won't have sleep issues."

10 / 10
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  • Goi...
  • August 7, 2015

Phentermine for Weight Loss (Obesity/Overweight) "The doctor prescribed a month ago. Today is my first follow-up, and I lost 14 lbs. Initially, dry mouth, insomnia, and a slight headache plagued me. But after about 5 days, all of that subsided. I only eat chicken, turkey, and white fish, veggies, and fruit while working out for at least an hour, 4 days per week. After a cup of black coffee in the morning, the only other drink all day is water. I hope the progress continues... my goal is to lose 40 lbs and keep it off this time!"

9 / 10
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  • RMP...
  • Taken for less than 1 month
  • October 1, 2016

For Weight Loss (Obesity/Overweight) "UPDATED REVIEW: Okay, so I started Adipex on 9/15/16, I'm 5'5" and at the time weighed 240. 16 days later (10/1/16), I'm down to 228. The side effects have subsided (insomnia, crashing, jitteriness, etc.). I find that I can go the whole day without eating due to lack of appetite, which is not good. I do have to remind myself to eat throughout the day, but that is not a big deal. I would definitely recommend this product/medication to someone who is overweight and finding it hard to lose weight on their own. So far, it seems to be working! Let's see how the next month goes!"

9 / 10
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  • Sha...
  • Taken for less than 1 month
  • October 14, 2015

For Weight Loss (Obesity/Overweight) "So I started the phentermine pill on a Saturday. That was the first thing that hit my mouth that day. I'll be honest, it made me a little dizzy and loopy for the first couple of hours. But then, all of a sudden, I felt this burst of energy, which made me feel great. And I have been every day since then... today is Thursday, and I've also noticed that I'm having trouble sleeping at night. I faithfully passed out around 10 pm every night before I started. And now I can stay up till the next day if I wanted to. It's almost like you have to force yourself to go to sleep. Since this is still my first week, I haven't recorded any weight loss yet. But I thought it would be helpful to mention the deprivation of sleep and the amazing amount of energy you have."

8 / 10
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  • Mrs...
  • July 3, 2015

For Weight Loss (Obesity/Overweight) "Today was the first day of taking the pill. I'm 5'1" - 150 lbs. It gave me a lot of energy to the point of walking and running 3 miles today! Very thirsty, I must have drank 6 bottles of water today with ease. A little insomnia tonight, but I sometimes have insomnia, so it's probably me and not the pill. So far, so good! I hope to check back in two weeks with my update. Working out really hard and eating right is the key! Stay motivated, all!"

5 / 10
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  • Got...
  • Taken for less than 1 month
  • July 1, 2015

For Weight Loss (Obesity/Overweight) "I've only been on phentermine 37.5 since June 23, 2015. My starting weight was 220 at 5'5" and this morning I weighed in at 214.8. I take it every morning as soon as I get up with 1-2 cups of water. It does make me really thirsty (so I have been drinking more water), and the first few days, my sleep was so off and I felt really jittery. I have definitely noticed that I don't eat as much. Even if I try to eat a lot, I feel bad, so I don't try much :) I try to attend boot camp 1-3 times a week. I can't wait to see results within the next week and days to come."

9 / 10
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  • Ams...
  • March 13, 2016

For Weight Loss (Obesity/Overweight) "I have been taking phentermine for only about 4 days now. But I have lost 8 pounds. I am also taking another pill for depression and anxiety for about a month, so I'm not sure if all my side effects are from only phentermine, but I have been having lots. I have been unable to sleep for more than a couple of hours a night, a migraine on day 3 that sent me home and put me in bed all day, little to no appetite, irritability, and diarrhea for a day now. However, I've been reading that these side effects only last for a week in some people, so I'm going to wait and see. The weight loss part is working so far. I've just had to force myself to eat food throughout the day. If this drug works, it will be worth it."

6 / 10
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  • Cen...
  • Taken for 1 to 6 months
  • September 8, 2019

For Weight Loss (Obesity/Overweight) "I started phentermine in Jan 2019 for 3 months, and as of September 7, I'm down 50 lbs. This included doing spin exercise 4 times a week and also drinking a gallon of water a day. The downside is that the insomnia is so bad. I started at 298 lbs. I went to my primary doctor, and he was very detailed with prescribing these pills. I have no health issues, but he sent me to a cardiologist for clearance. I'm 42, and I'm exercising to maintain my weight, and the goal is to lose more."

10 / 10
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  • Cry...
  • Taken for less than 1 month
  • October 26, 2015

For Weight Loss (Obesity/Overweight) "Ok, here goes: Oct 7th, weighed in at 211 lbs, as of Friday, October 23, I weighed in at 192 lbs!! Super excited is truly an understatement! The only side effects that I have noticed are dry mouth and lack of sleep. Other than that-nothing to complain about. I am super excited to track my success, especially since it has always been so hard on me to lose weight! So, I will keep posting about my success with you..."

10 / 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.