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Phentermine and Headaches: What Users Say (Page 2)

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

Reviews for Phentermine

Commonly mentioned side effects
  • the...
  • July 28, 2009

Phentermine for Weight Loss (Obesity/Overweight) "I'm 25 years old and I have had a weight problem my entire life. For the last 8 years, I have lost and gained weight like crazy. My doctor put me on T-Diet 30mg on April 1, 2009, when I hit 292 pounds. I am currently on the 37.5 mg Adipex tablet, and I am down to 244 pounds. I feel phenomenal. After learning I had an underactive thyroid about a year ago, I had really started to feel like crap every day, and the weight just kept packing on. I feel 16 again and more self-confident. The worst of the side effects were the dry mouth (chew sugar-free gum to help), nausea at first (take an antacid), headaches at first, increased anxiety (totally worth it anyway), constipation, and I am easily agitated. Good luck."

10 / 10
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  • woo...
  • August 2, 2009

Phentermine for Weight Loss (Obesity/Overweight) "I started taking Adipex on June 2, 2009. I have lost 28 lbs since then and feel so much better. I still have a long way to go, but I feel motivated to do it. The only side effects I had were headaches and dry mouth. But I drink tons of water to help with the dry mouth, so that isn't such a bad thing. I would recommend this to anyone who needs to lose a significant amount of weight. You must do it right though and be sure to eat. Sometimes I have to force myself to eat."

10 / 10
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  • Zul...
  • Taken for less than 1 month
  • March 7, 2017

Phentermine for Weight Loss (Obesity/Overweight) "I started Adipex last Tuesday, 2/28/17. My starting weight is 208, today, 3/6/17, my weight is 190.3. I'm amazed with this pill. The first day, I felt a very slight headache, I thought it was because I didn't have my regular cup of coffee, so I had one. I experienced slight nausea, but it didn't last long. It's amazing how my appetite has decreased, and I can't eat my meal completely. Until yesterday, I didn't even feel hungry. Today, I felt hungry around 10:30 am and ate just a 1/3 of a protein bar. At 12, I had half of the leftovers from yesterday's dinner because I had no desire to finish. I'm very happy so far. Also, I have no problems sleeping. I take my pill every morning at 7 and eat a protein bar for breakfast an hour later with 16 oz of water. Total: 10 daily."

9 / 10
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Frequently asked questions

  • Cmp...
  • Taken for less than 1 month
  • January 13, 2020

For Weight Loss (Obesity/Overweight) "I took phentermine for a little over a month and lost 8 pounds. I did not have time to go back to the doctor for a refill until recently and am excited to start again. My advice is to split the full dose (37.5) in half for your first week. I tried taking the full dose right at first, and it made my anxiety awful-flushed face, headache, pounding heart, etc. Plus, if you have regular exercise and a good diet, you can make the prescription last longer and get the same results if you took a full dose without diet and exercise!"

9 / 10
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  • La-...
  • Taken for 1 to 6 months
  • December 13, 2015

Phentermine for Weight Loss (Obesity/Overweight) "I was prescribed Fastin for weight loss. The prescription pills worked great, not a single bad side effect. I lost over 50 lbs in about 4 months. It gave me energy to start working out, and WOW did my concentration for work improve. However, the pills were costly and given out in the office only. So every month it was $40 for the doctor visit and weigh-in, and another $40 for 1 month's worth of pills. When I was unable to afford this regimen, I looked for cheaper alternatives. I got some over-the-counter bottle of Fastin, I bought 2 bottles. These are unhealthy, way over-caffeinated crap! I had gotten very ill halfway into taking the first bottle and had to stop because of jitters, headache, paranoia, racing heart!!! My advice, pay for the real stuff."

9 / 10
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  • mel...
  • November 9, 2013

For Weight Loss (Obesity/Overweight) "I was at 185, now 174!! So far, 11 lb down in a little less than two weeks.. super excited! My goal weight is 130-135. 185 is the most I've ever weighed.. I don't think I look it, but the scale doesn't lie! Lol. I've had a few symptoms so far... dry mouth lasts all day whether I chew gum or drink water. Insomnia is horrible, I can have three hours of sleep and be fine all day. I used to get really jittery and want to move around, but so far I haven't been super hyper like I was. Today I felt my hands and feet tingling, not bad though. I have also had a headache the past two days... which it may not even be from this, hopefully, it'll go away. I also would have hot flashes but then get cold. Overall, I'm just excited to see results!!"

9 / 10
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  • Sar...
  • November 16, 2019

For Weight Loss (Obesity/Overweight) "30 y.o., 5’5 weighing in at 197 lbs, but you couldn’t tell looking at me. Work out 3-4 times a week with weight training, but I didn’t like that I wasn’t shedding weight. You can definitely tell my arms were toning, though. Been on 15 mg phentermine for three days, and as of this morning, I am 192.2. Dull headache in the morning is the only side effect I have! I’m so excited for this journey."

10 / 10
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  • Ski...
  • November 15, 2016

Phentermine for Weight Loss (Obesity/Overweight) "The first week, I had to force myself to eat. I didn't have a taste for anything, but once I took my first bite, I ate it all. Two meals a day: big breakfast before the pill. The second week, it was self-control, slight headaches from missing meals, so don't skip meals. I drank tea so I could use the bathroom. Ate high fiber foods and high protein foods. No sugar, no drugs, no alcohol, no caffeine, don't drink alcohol with this medicine. Alcohol is a depressant, and APEX gives you energy. You are going to feel so weird, plus, alcohol is sugar, it's empty calories. I lost a total of ten pounds in two weeks. I'm going on my third week. Stay at 2000-2500 calories per day. Drink water, no snacking, eat salad if you get the urge. I'm a medical student, hope this helps."

10 / 10
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  • Ash...
  • February 28, 2017

Phentermine for Weight Loss (Obesity/Overweight) "I have been taking these pills on and off since last year. When I am strict with my diet, I see amazing results. My body has adapted to them, so that is my only downfall. They are not as effective as when I first started them. To anyone having side effects, I was having terrible headaches and dry mouth. My doctor offers name brand and generic pills. The generic pills give me massive side effects, I can only take name brand. If you are having side effects, take 1/2 pill in the AM and the other 1/2 pill late morning. That way, you can split the dose, it will stay in your system longer and may help with evening crashes."

9 / 10
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  • Jam...
  • Taken for 1 to 6 months
  • November 6, 2019

For Weight Loss (Obesity/Overweight) "Started taking this medication on October 4, 2019. At my one-month mark, I’ve officially lost 9 pounds. Started at 174 and now at 165. It’s a little bit slower than average, but I’ll take it! I’m a full-time nursing student with 4 kids, so exercise isn’t always easy to obtain. First week, I had some headaches, could feel the medication kicking in, dry mouth, but everything has subsided now. I was given 37.5 mg a day, but can still only tolerate taking half a pill. Taking the whole thing makes me too speedy. Will check in next month for the next round of results."

8 / 10
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  • Nie...
  • Taken for 1 to 6 months
  • July 4, 2019

For Weight Loss (Obesity/Overweight) "Phentermine has given me the life-changing boost that I've needed. I won't lie, when you first start taking it, it almost makes you want to stop because it makes you feel like you can't concentrate or sleep. You have to help your body adjust to it. I started off with half a pill each morning and 1 bottle of water, then I would eat breakfast about an hour after. This gave my body nourishment so that I would not feel nauseous throughout the day, and I wasn't hungry after that. Depending on your line of work, you may even 'forget' to eat, but DRINK WATER THROUGHOUT THE DAY. When someone complains of fatigue or headaches, this is why! You MUST stay hydrated or you'll have severe cottonmouth too. After about 2 weeks, I was able to take a whole pill. I also changed to clean eating as well as working out. So far, I'm almost down 15 lbs from 211 lbs in just 1 1/2 months, which is a big deal for me. It's definitely worth it, but you have to be committed to the change!"

9 / 10
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  • phe...
  • Taken for 1 to 6 months
  • December 6, 2012

For Weight Loss (Obesity/Overweight) "I was almost overweight, and it was time for me to lose weight. I tried going to the gym, but I could never keep up with it. I tried dieting, but I would starve to death and end up miserable. Then I decided to try this pill. The first two days, I had a little headache, but it was all good from there. I used it for 1 month and lost about 22 lbs. I continued to lose weight even after stopping. It has been 4 months since I stopped taking it, and I have not gained back the weight. I definitely recommend this pill to anyone who is tired of not getting results. I have lost a total of 30 lbs. This definitely changed my eating habits. I eat way healthier now, and I feel great! Good luck to all of you!"

10 / 10
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  • kcb...
  • Taken for 1 to 6 months
  • May 20, 2015

Phentermine for Weight Loss (Obesity/Overweight) "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 month and down 5 lbs. Dry mouth and headache in the first month, but haven't had a problem in the 2nd month."

10 / 10
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  • Ali...
  • Taken for less than 1 month
  • June 14, 2013

Phentermine for Weight Loss (Obesity/Overweight) "Week 1: Pros lost 10 pounds, eat less. Cons: had headache for 6 days, pills wear out by afternoon, 5-6 pm. Analysis: user must put effort into portion control or weight will come back after finishing with medication. Will follow up in another week. Meal plan: 1500 per day. Exercise 5 days a week cardio, and strength."

8 / 10
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  • Anonymous
  • Taken for 1 to 6 months
  • March 18, 2015

Phentermine for Weight Loss (Obesity/Overweight) "I was personally not on this pill, but my mom was and currently still is. Though she has lost about 20 lbs in the last month or so, she has been experiencing side effects. First off, she's had severe headaches since starting the medicine. She's had extreme mood swings and is very nauseous and dizzy at times."

1 / 10
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  • mor...
  • August 29, 2010

Phentermine for Weight Loss (Obesity/Overweight) "I started this medication August 27th, 2010... a few days ago. I normally wouldn't tell anyone what I weigh, but I'll tell you all, 263 pounds. I'm 21, I have high cholesterol. I just decided one day that I had enough. So, I made the appointment at my local bariatric clinic. She gave me a combination of Phentermine and Phendimet, as well as a thyroid pill. The first day taking the medication was weird. Cold sweats, nervous, but I did day two, and I felt just fine. A little headache, I'm not sure if it was the medication that did it or my lack of caffeine. I stopped drinking Dr. Pepper. I haven't taken it that long, only three days. But I feel good and I am already eating better. I know when I am full. I hope this was helpful to someone."

8 / 10
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  • Laz...
  • September 28, 2019

Phentermine for Weight Loss (Obesity/Overweight) "I'm 21 years old, starting weight was 169 lbs, and I'm 5 ft 7 in. My doc gave me this to lose 40 lbs in 3-4 months to get down to 125-130 lbs. I had to research everything on my own. The first day I took 37.5 after dinner at 6. The next hour I was doing HIIT workouts from an energy burst. First week I had headaches, excessive sweating, dry mouth, and a bad taste in my mouth/lips no matter how often I brushed my teeth. Headaches probably from dehydration/not eating. I had NO appetite. I lost 8 lbs the first week. Second week, headaches calmed down, but I was getting used to the meds, so I split them. 1/2 around 8-9 a.m. and the next 1/2 around 3-5 p.m. It's my third week, and I've hit a stopping point with losing weight. I don't workout or meal prep, but I need to. Meds shrink your tummy, not your skin. DO NOT drink/smoke cigarettes. Mixing an upper/downer/nicotine causes bad side effects. Don't think of these as a 'Miracle Pill'. The long-term effects can be really harmful or addicting."

6 / 10
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  • Tha...
  • Taken for less than 1 month
  • August 27, 2018

Phentermine for Weight Loss (Obesity/Overweight) "I am a 48-year-old female who has been battling weight issues for over 10 years. I stopped smoking cigarettes on 3/3/13, and my weight took a jump up for the worst. I lost my willpower after gaining so much weight. I began to stay in the house and withdraw from social events because of being ashamed. I began taking Adipex on 8/15/18, weighing 234 lbs. As of 8/22/18, I weigh 227 lbs. THAT'S 7 LBS IN 7 DAYS! Today, 8/26/18, I haven't weighed myself, but I'm sure I've lost more. I have no appetite or cravings. Now that I see results, there is no turning back. Just wait until I exercise, oh boy! Side effects are slight headaches, jitteriness, sweating, and loose stools. The jitteriness gives me energy, so I don't mind."

10 / 10
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  • Mim...
  • Taken for 1 to 6 months
  • January 3, 2020

For Weight Loss (Obesity/Overweight) "I’ve been on phentermine for a month. I’ve lost 8 lbs. I can’t wait to lose more. My first two weeks, I was on a dose of 15 mg, then was changed to 30 mg. My side effects are a dry mouth, which I don’t mind because I drink a lot of water, and some headaches. But I love the energy it gives me. I’m such a happier person now, before, I would just sleep. I was always tired. So wish me luck on the next two months. I was at 190, I am at 182 now. I’m only 5 ft, so I really need this weight to go down."

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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  • Tha...
  • Taken for less than 1 month
  • June 13, 2014

For Weight Loss (Obesity/Overweight) "I started taking the meds almost 2 weeks ago. Lost 3 pounds on the scale, but my clothes are loose, and that's what matters to me. Most people focus on that 'magic' number, but everyone needs to keep in mind that muscle weighs more than fat; therefore, if you're also working out, you're building/toning muscle. I'm 5'5" @ 153, which had my doctor questioning why I was in her office. The first 2 days, I had terrible headaches, but I believe they were withdrawals from completely cutting out caffeine and sugar both at the same time (wouldn't recommend). My appetite has been little to nothing, so I have to force myself to eat. I'm continuously drinking water because of dry mouth, but that's a good thing. Good luck, and don't focus on the scale so much!"

9 / 10
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  • Hop...
  • June 30, 2010

Phentermine for Weight Loss (Obesity/Overweight) "Update from 06/24/10 post! I have been on Adipex 37.5 for 2 weeks and 3 days now. I have lost a total of 13 pounds in this amount of time. The only problem I have been having is headaches, so I am taking myself off this medicine for about 3 days. I'm still walking every day, doing light weights, Zumba once a week, and not taking the medicine on weekends. I do notice that I am a little hungrier when off the medicine, but I just find something to keep my mind off food. Like I'll get up and take a walk outside or go chat with a co-worker. I keep Graham crackers, fruits, and water for snacks when I get the hunger feelings. Starting weight was 251 lbs, current is 238 lbs. I will keep updating!"

9 / 10
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  • A...
  • Taken for 1 to 6 months
  • May 12, 2014

For Weight Loss (Obesity/Overweight) "My experience was this. I was practically dying. My body was giving up. My blood pressure was 205. Pre-diabetic. LDL off the charts. I had joint pain, could not concentrate, acid reflux, headaches constantly to migraines, could not sleep, in the dead of winter I was always too hot, would walk outside at 2 a.m. in shorts just to cool down, snoring, could not get any complete rest, and many more. I found this YouTube site from Dr. William Davies, Wheat Belly. I instantly decided to quit eating all wheat and grains. You will be happy you did. Then I went on Phentermine 37.5 mg. I was 315. Since 1/15 to 5/12, I have lost 60 pounds. I'm still losing. You will find out that you need to drink lots of water because it will be difficult to urinate."

10 / 10
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  • Cat...
  • October 16, 2019

For Weight Loss (Obesity/Overweight) "I am 43 years old. 5'6" and started a week ago (weekend off the pill) taking half a pill at around 10:30 a.m. I started at 180 lbs. This morning I was 174 lb! Lots of energy. Very thirsty all the time. A low headache in the mornings. I am not hungry at all. Eating very little. Yesterday, for example, I had a cheese stick, 4 crackers, 1/4 avocado. All day. I had to force myself to eat. I do not drink soda or juice. I do not add sugar to anything. I do not exercise at all. I hope it works for you."

8 / 10
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  • Aim...
  • Taken for 1 to 6 months
  • May 18, 2015

For Weight Loss (Obesity/Overweight) "I started taking phentermine 30 mg on 3/18/15. In the first month of using the medication, I dropped 13 lbs (229 lbs to 216 lbs). 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 37.5 mg medication. During that month, I lost 12 more pounds (216 lbs to 204 lbs). So overall, I've lost 25 lbs in two months. I'm elated! My first goal is to get to ONEderland (i.e., finally be under 200 lbs). It's nice to actually see some progress. I have hypothyroidism, so weight loss has always been difficult. This helps!"

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.