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Phentermine and Headaches: What Users Say (Page 5)

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

Reviews for Phentermine

Commonly mentioned side effects
  • Lpe...
  • October 29, 2018

For Weight Loss (Obesity/Overweight) "I took this drug once 6 1/2 years ago and lost 20 pounds. I managed to keep it off for about 5 years and then stopped paying attention and gained it back. My doctor has started me back on it again for 30 days. The first time I had lots of side effects like bad headaches and dry mouth. This time I have no side effects, but I now know to drink a crazy amount of water. Both times it took a few days to start working. I still feel hungry at mealtimes, but I can eat a very small amount of food and be full. I eat carbs in very small amounts like 1/4 cup rice or potatoes or 1/2 slice whole grain bread for fiber. I stay under 40 carbs a day. I do not eat pasta or desserts. I do have to cut back on the food but use the drug for support. I never take the drug after 3:00 pm or it will keep me up all night. I try to wait as long as possible in the morning to take it so I get the effect through dinner. I shoot for 10:00 am. It's hard to get enough water when taking this drug, so drink!"

10 / 10
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  • Jil...
  • Taken for 1 to 6 months
  • July 9, 2019

For Weight Loss (Obesity/Overweight) "I was prescribed Phentermine 15 mg capsules. My starting weight was 307 lb and I'm a 5'2", 34-year-old mom of two. The first week of taking Phentermine was rough. I had headaches, dry mouth, and some fast heart rates. It worked so well I had to force myself to eat so I didn't feel sick. Like, I literally ate an average day's worth of food in one entire week. I had a massive panic attack on night 8 and skipped the pill on day 9. Day 10 I started back on it, planned out meals and snacks, ate a little at mealtimes even when I didn't feel hungry but wanted to avoid feeling sick. I was doing great! Three weeks in I had lost 5 lbs. I expected a more significant loss, but 5 was better than nothing! Six weeks in and I have been the same weight since :( Went to the doctor today (week six) and was put on 15 mg of Phentermine two times a day. I start tomorrow and will update in a few weeks :)"

9 / 10
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  • One...
  • Taken for less than 1 month
  • May 5, 2014

For Weight Loss (Obesity/Overweight) "Age: 36, Weight: 230, Height: 5'7'. Mother of 4 kids, I started Phentermine 37.5 mg tabs on 4/17/14. I take half the 37.5 mg tab 1/2 hour before breakfast and the other half 1/2 hour before lunch. By taking them this way, it helps curb my appetite for the whole day. I don't have a scale in my house, so I'm not sure how much weight I lost; I will find out at my follow-up doctor's appointment in 2 weeks. But, I can say that I can tell I lost weight when I look in the mirror and by the way my clothes are fitting more loosely. The only side effects that I have gotten are dry mouth and headache when I don't drink enough water. I seemed to lose the most weight in week 1; I'm sure that was water weight. I'm eating low carb/high protein, but need to exercise more."

7 / 10
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Frequently asked questions

  • Zzk...
  • July 10, 2016

For Weight Loss (Obesity/Overweight) "Female, 40 yrs old, 5'3". I've started phentermine 37.5 mg Friday, July 8, 2016. Starting weight 200.4. Today, July 10, 2016, I am down to 196.4. I've lost 4 pounds. I'm sure it's water weight, as I've increased my water intake by 90%. It suppresses my appetite, but I couldn't sleep the first night. I find I get a headache mid-afternoon, 2-3 pm. I take it at 8:30 am. I take Excedrin, and all is well. I'd like to get to 170 for my first goal, 160 for my second goal, and then finally 150. So far, those are the only side effects I'm experiencing. I'm not counting calories, but I am watching what I eat and drink only water, and exercise for an hour 3 days a week, plus daily housework. I also have a kitten that's very hyper and keeps me active. LOL. Good luck to everyone's weight loss!"

8 / 10
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  • Kay...
  • Taken for 1 to 6 months
  • September 19, 2015

For Weight Loss (Obesity/Overweight) "I started taking phentermine on August 3rd, and I weighed in at 222.8. My last weigh-in on September 14, I was 199.8. That is 22 pounds in less than 2 months. The 1st week, I lost 13.6, 2nd, 1.6, 3rd, 3 pounds, 4th, gained 1.4, 5th, lost 3.8, and the 6th week, lost 2.4. I exercise 4 days a week for an hour, and I eat no more than 1400 calories a day. The first week and a half on the pill, I had no appetite at all, I had to force myself to eat. My appetite slowly came back, but it's not as bad as when I wasn't on the pill. I don't crave sweets nor fast food. I never had an issue sleeping, headaches for maybe 4 days, and I was jittery the first 2 or 3 days. The increase in energy was high the first couple of days, now, it's not as high."

10 / 10
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  • Bro...
  • Taken for less than 1 month
  • April 26, 2018

Phentermine for Weight Loss (Obesity/Overweight) "I took Adipex four years ago, and it was amazing. I lost 50 pounds and felt great! I started it back up this week because I got married and fell off the healthy food wagon. This time around, I've had headaches and a racing heart. I think I'm going to try taking my pill every other day and see if the side effects lighten up any."

7 / 10
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  • Nic...
  • March 21, 2017

For Weight Loss (Obesity/Overweight) "I started the pill on 3/18/2017. SW was 302. I stepped on the scale today, 3/21/2017, and was down 5 pounds, 297. I am 5'9" with curves (built like Serena Williams), so my weight is in all the right places, just want to lose my arm and stomach fat. I also work out 5 times a week and eat pretty healthy. I drink a gallon of water M-F between 8 AM and 5 PM. I tend to pee a lot, I don't feel hungry as I used to be. I sleep pretty well, and I only experienced a headache once so far."

10 / 10
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  • Los...
  • November 5, 2008

For Weight Loss (Obesity/Overweight) "I started this supplement on October 29th. The first few days were a little rough for me. I had bad headaches, dizziness, nausea, and low energy. I worked out some kinks. I have to be sure I don’t take the medicine on an empty stomach. I usually have a protein bar just before it's time to take it or just after. The nausea, headaches, and dizziness have subsided, and my energy is picking up. I have not weighed in yet, but I feel confident that I have lost some weight. This is a good program; I have known several people that have successfully lost weight with it. Just hang in there; the first week may be a little rough, but it will get better. Also, I have not had any trouble sleeping at night, and I feel fabulous in the mornings. I have not overslept since starting the medicine, and that is normally a daily thing for me."

5 / 10
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  • Jac...
  • Taken for less than 1 month
  • April 9, 2015

For Weight Loss (Obesity/Overweight) "I started phentermine (37.5 mg) on March 30th. I started out at 246 lbs. I am now down to 230.4! This pill does work! I have barely exercised, I eat 1 package of oatmeal in the morning, and for lunch and supper, I portion my food to about 1 cup. If I am not hungry for supper or lunch, I eat fruit. Drink lots of water, very dry mouth has gotten worse since the first week. The first day I had so much energy, and it felt wonderful! My side effects, which have been iffy but I've managed, are: dry mouth, occasional headache, trouble falling asleep, anxiety, tightness in chest, panic attack (only 1 day, and it was bad), tingling in arms, constipation (that's why I eat oatmeal every morning), dizziness. But the belly is going down and self-esteem is up!"

9 / 10
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  • Mrs...
  • Taken for 1 to 6 months
  • November 19, 2017

For Weight Loss (Obesity/Overweight) "I started taking phentermine 37.5 mg on October 18, 2017, once a day. I initially weighed in at 211 lb on the date I started taking the medication. As of today, November 18, 2017, I have lost 20 lbs. I am down to 190 lbs!!! I have completely changed my eating habits to no red meats, fried foods, starches, and I try to keep my calorie count right at 1425 per day, which was difficult at first, but now it's much easier. I don't drink soda or coffee anymore, but I'm super thirsty all the time. The first weekend I took the medication, it made me very jittery, and I suffered from insomnia and horrible headaches. After the first four days of being on the medication, my symptoms improved and eventually went away. I would recommend starting this medication on a weekend."

9 / 10
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  • San...
  • Taken for 1 to 6 months
  • November 6, 2015

For Weight Loss (Obesity/Overweight) "I am a 57-year-old woman just going into menopause. I gained about 15 pounds. I could eat all day, and it seemed like I couldn't get full. I would exercise, but I overate my workouts. I would always start a diet on Monday and would stay focused until the weekend came. I was so tired of losing and gaining the same 4 pounds. I went to my doctor for my yearly checkup and explained to him my menopause weight gain. I asked for some diet pills, and he suggested phentermine. Started on October 5 at 186. At my 30-day weigh-in, I am 176. I am on my second round and will be weighing in December. The only side effects were dry mouth, slight headache, constipation, and trouble sleeping. After a week, side effects none. Goal weight 165."

10 / 10
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  • Anonymous
  • April 28, 2010

Phentermine for Weight Loss (Obesity/Overweight) "I witnessed a friend get amazing results from this, so I thought I'd give it a try. I started at 199 lbs, and a month later I am at 181 lbs. So, lost a total of 18 lbs... not too bad. I haven't had any side effects. Maybe a few headaches when I first started taking the pill, but nothing too bad. My appetite has definitely decreased. Normally, I am hungry all the time and never feel satisfied, but now I eat a little bit of my meal and I'm pretty much full. I have also lost cravings for chocolate and sweets, which is nice. I drink more water than I used to because I often get dry mouth. But now, I'm finding it harder to see the numbers drop on the scale. I go to the gym almost every day for about 1 1/2 hours. Hopefully, the numbers will start dropping again!"

7 / 10
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  • Sun...
  • Taken for 1 to 6 months
  • May 2, 2021

Phentermine for Weight Loss (Obesity/Overweight) "I started it in March 2021 and lost 10 pounds. It’s May 1, 2021, but it gave me headaches every day, so I had to stop taking it. It did curb my appetite and gave me lots of energy. Works good, but just not for me."

9 / 10
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  • Jaz...
  • May 3, 2018

For Weight Loss (Obesity/Overweight) "I am 5'4" (female). I got my prescription on 03/26/18 at 259.8 pounds. I started the pill on 03/29/18. My first week, I began taking the pill around 10 a.m. (wrong choice). I had dry mouth, headaches, no appetite at all... Yes, it gave me energy! But taking the pill so late made me stay up all night, almost until 4/4:30. So the next morning, even after I took the pill, I felt like a zombie. My second week, I started to take my pill at 7/7:30. By 8:30/9, I had dry mouth and lots of energy, but by the end of the day, I was able to go to bed on time. I had no appetite, I would eat two bites of my food and feel so stuffed. On 04/25/18, I went for my check-up and got on the scale: 244.2 lb. I lost 15 pounds my first month with no exercises! I’m now on my second month with no side effects. Day number 3 (05/03/18), I started going to the gym on 05/01/18, only doing an hour or two. I noticed that after I worked out, I have a little appetite, but still can only eat such a little. I have not gotten back on the scale yet."

10 / 10
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  • Lov...
  • Taken for less than 1 month
  • March 21, 2015

For Weight Loss (Obesity/Overweight) "Started four days ago. First day felt great! No appetite at all. The thought of food made me feel sick, but I ate anyway so I didn't feel sick. Couldn't sleep at all. Day two was okay. Headache was pretty bad, upset stomach, jittery, slept 3 solid hours, but that's it. Day three, headache, jittery, just felt weird, but ate good and slept great. Day four, headache, extremely tired, sick feeling. I did have big bouts of energy about an hour after taking the pill. That's when I've been exercising. I have exercised all four days. No weight loss yet, and feel like shit. I'm hoping this will all change after a few more days."

5 / 10
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  • Bda...
  • Taken for 1 to 6 months
  • May 15, 2018

For Weight Loss (Obesity/Overweight) "Started taking phentermine 37.5 mg April 10th, 2018. 40 yrs old, 5'4', SW 282 lb, CW 261 lb as of May 14th. I have lost 21 lbs in just over a month. I do walk a lot and have been active. I calorie count, 1200 to 1700 calories a day. I try to do low carb, fruits, and veggies. The pill suppresses my appetite, so I don't crave or want food. My body tells me when I'm actually hungry, so I eat. It does give me dry mouth, so I drink a lot of water. It does make me feel a little spacey the first hour or so. Then I get up and start doing stuff and am fine. It has really helped me with that jumpstart I really need. This second month, I am upping my exercise and diet. I take only half a pill some days or even skip a pill sometimes so I can rely on myself. I do take 10 mg of melatonin at night to sleep. I did take Tylenol due to headaches at first, and I think that had a lot to do with adjusting to eating less and no caffeine. I have no health problems, so this pill does great for me."

10 / 10
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  • Mar...
  • Taken for 1 to 6 months
  • January 26, 2018

For Weight Loss (Obesity/Overweight) "I started on October 1st, 2017. The 1st month, I lost 12 pounds, 2nd month, 10. Today is the last day of the pills. I have lost a total of 33 pounds in 3 months. My weight when I started using it was 349 lb, now it is 316 lb. The 1st week using that medication was horrible. I had headaches, lots of energy, and thirsty, very thirsty, not hungry at all, but thirsty. After the 1st week, I was only thirsty, and the headache was gone. My doctor was checking me every week for high blood pressure, since I was borderline, however, for some reason, high blood pressure was gone. I have a doctor's appointment next week, I will ask him if I can take it again. I want to lose more weight, 1st time ever I was able to lose weight."

10 / 10
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  • Ann...
  • March 7, 2018

For Weight Loss (Obesity/Overweight) "Started phentermine 15 mg two days ago. Which I think is the perfect dose so far. I haven’t craved sugar or anything sweet. I have eaten 700 calories a day, and that’s just fresh fruit, veg, 2 eggs, and 2 bits of bacon. Even that was a struggle to force down my neck. Trying to drink plenty of water/sugar-free juice to flush out my system. I feel good already. I’m so glad I came across this. It’s just what I needed to kickstart a healthy lifestyle. I plan to wean off after one month, as my stomach would have shrunk by then and hope to have lost a stone by then too. No symptoms on the 15 mg as it’s the lowest dose. I’ve been sleeping fine. No headaches, no heart palpitations, just pure satisfaction."

10 / 10
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  • twi...
  • Taken for 1 to 6 months
  • September 27, 2012

For Weight Loss (Obesity/Overweight) "I have been taking this medication for about 6 weeks and have lost 12 pounds, including 5 inches off my hips and 2 inches off my waist. I exercise 5 days a week. It is an intense workout, which includes cardio and weights. I do not feel as hungry all of the time like I did before. I drink a gallon of water a day, if not more. I have experienced a few side effects, like dry mouth, rapid heart rate, some constipation, and headache. I want to continue until I reach my goal and do not want to give up! Seems like in the past I always give up, but not this time. This works really well and I highly recommend this. I have 25-30 pounds more to go!"

9 / 10
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  • bsn...
  • January 27, 2014

For Weight Loss (Obesity/Overweight) "I have lost 38 pounds on this since September 2013. I am on a diabetic diet and a fitness program also. This medication has helped me a lot! Taken the edge off the hunger and helped me get my glucose levels under control. There are some side effects, but many of them went away by week 3. Metal taste in my mouth, headaches, constipation (has not gone away), and dry mouth/bad breath. This is not a miracle pill. You will have to work hard and make good choices. My doctor is helping me learn how to make better choices and make healthy living a part of my life. I plan on being on this medicine ONLY until I can successfully learn how to control my glucose levels and follow a plan consistently."

8 / 10
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  • Mir...
  • Taken for less than 1 month
  • May 21, 2015

For Weight Loss (Obesity/Overweight) "I started phen one week ago, after dieting and exercising for 11 weeks and only losing 10 pounds. I'm on a 37.5 mg dose. I started phen on May 14 at 179 lbs. I'm down 5 pounds! I have exercised twice. I've had 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 / 10
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  • Soc...
  • Taken for less than 1 month
  • June 7, 2015

For Weight Loss (Obesity/Overweight) "Started phentermine 30 today (6/7). I have PCOS and am on BP meds that keep BP in the normal range (122/72). About 1 hour after taking phentermine, BP increased to approx 149/87. At 2 hours, almost back to normal. Slight headache. PCOS makes it difficult to lose weight. Trying this med to see if it will jumpstart loss - having 110 lbs to lose and allow for more mobility to exercise. Will provide updates."

8 / 10
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  • Anonymous
  • Taken for less than 1 month
  • July 30, 2012

For Weight Loss (Obesity/Overweight) "I have been on phentermine for 3 days. I have lost 7 pounds, HIGHLY due to the fact that I haven't eaten much of anything. I have walked every day for 30 min a day. I take the pill when I wake. I have had a headache every day about 3 or 4 pm. I believe it's because I am not taking in enough calories. I am also taking birth control and a women's multivitamin."

9 / 10
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  • Mam...
  • January 24, 2016

For Weight Loss (Obesity/Overweight) "I started taking this back around the last week in December of 2015. It is now January 24, 2016. I have only lost 6 pounds. I am very active, and my diet has improved drastically, so I don't know why it hasn't worked for me. I have been debilitated by the crippling headaches up until 2 weeks ago. They were like the worst headaches of my life on a daily basis for weeks on end. I thought I was going to lose my mind and my job. Yes, I stayed hydrated and ate right, so it wasn't that. I'm disappointed. I'm going to stop taking it now because research says tolerance sets in after a few weeks, and one should discontinue therapy."

3 / 10
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  • LOS...
  • June 8, 2009

For Weight Loss (Obesity/Overweight) "Gained 80 lbs due to a disabling injury and several surgeries and lack of inactivity. Have been on phentermine for 1 week. Had a headache the first two days, no other side effects except only sleep about 4 hours a night but feel rested. Anyway, I've lost 10 lbs so far. You do have to eat because if I don't make myself, I won't. Have energy but not nervous, have high blood pressure (under control with medications for years), no effect on it at all so far but keep it checked daily."

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.