Phentermine and Constipation: What Users Say (Page 3)

• MJS...
• September 9, 2015

For Weight Loss (Obesity/Overweight) "I have been using phentermine since the end of May, and I have lost 48 pounds. The noticeable side effects I am experiencing are dry mouth and constipation. This drug has decreased my appetite significantly. My exercise regimen is walking for one hour a day. I try to eat healthy, reduced my sugar and salt intake. I am worried about keeping the weight off after I stop taking this because this drug really has curbed my appetite."

• Shr...
• Taken for less than 1 month
• August 21, 2015

For Weight Loss (Obesity/Overweight) "I started on 8/8/15 at 257 lbs. Tomorrow will be 2 weeks I have been on it, and I'm down to 240 lbs, that's down 17 lbs! I work out 4 to 5 times a week, walking 3 miles or the elliptical for 45 mins. I have cut out all sweets, as I noticed foods with a lot of sugar make me shake while on the pills. I have like no appetite, but make myself eat at least 3 times a day. I mostly eat fruits and veggies when I do eat. I drink about 8 bottles of water a day due to dry mouth and excessive sweating when working out. I have only found 2 side effects: dry mouth and constipation, which I take a stool softener every morning to help with."

• 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."

• for...
• October 19, 2007

For Weight Loss (Obesity/Overweight) "I have been using phentermine for approximately 6 weeks and have lost 15 pounds. Although the product is working great, I have experienced severe constipation with phentermine, even with drinking a lot of water and a high fiber diet. My doctor has had to prescribe a laxative for me. I guess you have to take the bad with the good. Or, like me, I gave up phentermine and have been working on losing weight without diet medication."

• Anonymous
• Taken for less than 1 month
• February 19, 2016

For Weight Loss (Obesity/Overweight) "I'm 50 yrs. old and just started phentermine 37.5 mg on 2-16-16. It's just been 4 days, and I've already lost 14 lbs. I'm 5'8" and started at 320 lbs. I want to get down to 145, so I have a long way to go, but so far, wow! The only side effects so far are dizziness, jitters, constipation, and slight headaches. All of that I can deal with because this pill is working so far. Will update in a month or so."

• 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!"

• coc...
• Taken for 1 to 6 months
• March 21, 2014

For Weight Loss (Obesity/Overweight) "I started phentermine two months ago (mid-Jan 2014), and I have lost 25 pounds (almost 26) so far. Working out is a challenge with my kids, so I just try to walk whenever I can. I mostly monitor my caloric intake to make sure I eat enough to avoid my body's starvation defense mode, because that would defeat the purpose. I usually do the protein meal bars for lunch or breakfast shakes and then a sensible dinner. Only discomfort is the occasional constipation when I don't drink enough water. But usually, the dry mouth is enough incentive to drink as much water as possible. Also, I completely eliminated soda and other caffeine sources, which I believe helps avoid the risk of heart palpitations."

• Mia...
• December 23, 2018

For Weight Loss (Obesity/Overweight) "Started phentermine 37.5 mg in September 2018. I'm 22, 5'7", starting weight 239 lb and current weight 205 lb. I've been on phentermine for approximately 3 and a half months and lost 34 lbs! I count my calories, start eating a lot better, and work out when I can (I know I should do it more). I'm happy about my weight loss but determined to lose at least 60 more. The only side effect I've suffered from is dry mouth, but I learned to control that with a lot of water, of course, and gum. I've also suffered from constipation but occasionally use Ex-Lax, which helped a lot (tried a natural alternative but just made me extremely bloated and more constipated: Wal-Mucil, generic Metamucil). Great medication so far as I learn to work out the kinks. It's great for those of you who have found it impossible to lose weight. My insurance doesn't cover it, so its retail price is $39, but I had a coupon so I only pay $21. Must be serious about weight loss, it's not a magic pill."

• Gra...
• Taken for less than 1 month
• July 3, 2015

For Weight Loss (Obesity/Overweight) "I started phentermine on 6/17/15, weighing in at 200 lbs, and I'm 5 ft 9 inches. After 2 weeks, I have lost 10 lbs! I started having constipation and headaches, but it's manageable. I am getting married in October. Ready to shed the weight!"

• Aqu...
• Taken for less than 1 month
• August 5, 2015

For Weight Loss (Obesity/Overweight) "I'm back again. I just finished my 1st week on Phen 37.5, and I have lost a total of 12.8 pounds. I did not skip any meals, although I wasn't always hungry. I made sure to eat something. I was already a big water drinker before starting, it just made me drink more because my throat was always dry. 270.1 to 257.3 from July 28th to Aug. 5th. I did experience severe constipation, though, but a little magnesium citrate fixed that up. Female, 22."

• Kae...
• Taken for 1 to 6 months
• August 8, 2019

For Weight Loss (Obesity/Overweight) "I’m on my third month of phentermine. I started at 193 lbs and now down to 172 lbs! I still made myself eat some protein and veggies throughout the day so I don’t get shaky, so I haven’t had any problems with that! However, I’ve been experiencing bad lower abdominal cramping and diarrhea or constipation, it switches. Wondering if anyone else has had this problem? I drink plenty of water and green/black tea. My doctor said it could be lack of electrolytes, so I have to give that a try. But the cramping has been happening for about a month and a half, and I haven’t had my period (I’m on birth control and had my last period before I started the medicine), no, I’m not pregnant, lol. I read that side effects from this medicine can be nausea, abdominal cramping, diarrhea, constipation. Just curious if anyone else has had or is having this problem. Thanks."

• DOC...
• Taken for 1 to 6 months
• September 3, 2017

For Weight Loss (Obesity/Overweight) "I started on this medication back in February of 2017. I weighed in at 219 +/-. I had a few side effects [slight constipation] took some over-the-counter medicine and all is good. I didn't see anything at first, it took about 1 1/2 months. But to date, I have lost 31 lbs. I don't really notice it looking at myself [I rarely do, as I have been disgusted with my weight issues and how I just really let myself go], but different co-workers noticed that my face was thinner. Then I noticed that my tops were looking like I was drowning. All in all, this has been positive, and I would recommend it. Thank you~"

• Jak...
• Taken for 1 to 6 months
• October 30, 2018

For Weight Loss (Obesity/Overweight) "I've been taking phentermine (generic of Adipex) for 6 weeks now, and it's worked very well for me. The first 2 days, it gave me super energy, and my mind was in overdrive, but in the days since, it's been just enough to give me that extra boost to walk/exercise regularly and do things I've been putting off. I have had no change in mood or increased anxiety, and in my opinion, going without food is likely what causes some to experience irritability. My metabolism is high because it keeps my heart rate up (pulse monitored on Fitbit). I was 246 lbs and now down to 218 lb. This medicine is very effective at curbing appetite. The only negative side effect I've had is mild constipation, but it's probably due to my diet, not the medication. Originally, my doctor was only going to allow me to take it for 2 months, but due to my results and the fact that the medicine hasn't lost potency on me as of now, he extended my rx 2 more months. I'm very satisfied with how this medicine has worked."

• All...
• December 28, 2018

For Weight Loss (Obesity/Overweight) "I was prescribed this medicine for being overweight. I’m 18, 5'5" and my starting weight was 180/185, depending on how much I ate that day. I had previously taken antidepressants, which increased my appetite and made me gain over 40 pounds, so my doctor thought I could try this medicine. Just in the first few months, I was shedding weight like crazy. I was also drinking water only, no carbs, and going to the gym at least 3 times a week and doing cardio. My weight got all the way down to 136 lb. I am now at 142, and it fluctuates depending on my food intake and bowel movements. I did have some side effects with this medicine. Sometimes I would have heart palpitations, but it was only a few times. I also experienced dry mouth and insomnia. But the worst side effect I had was constipation. I wouldn’t have a bowel movement for 2 whole weeks."

• hol...
• March 30, 2012

Phentermine for Weight Loss (Obesity/Overweight) "I started taking Adipex on March 15, 2012. My starting weight was 232. My first week weighing in, I lost 7 lbs, weighing 225 lbs. I don't have too many complications, only dry mouth. I used to drink a lot of sodas, maybe 8-9 sodas a day. While taking Adipex, I only drink water. As a result of the non-sleep, my doctor also prescribed me trazodone, this is to put you to sleep. I now go to the gym and walk. I know after I stop taking the Adipex, my eating and drinking habits will change. I love this pill, the only thing is a little constipated, and that comes from not eating. My first week, I just took some stool softeners. Other than the dry mouth, constipation, and a little stomach cramps, I am good."

• Anonymous
• March 18, 2017

For Weight Loss (Obesity/Overweight) "During my appointment with my doctor on February 11, 2017, for a refill of my chronic pain meds and to seek a better solution for my sleeping pills, I weighed in at 296. I asked my doctor if she would give me something that would help curb the appetite. I started phentermine the next day. It is now March 18, 2017, I now weigh 271. It works, but you need to drink water and lots of it. I am now experiencing severe constipation. The medical guidelines say for short-term use, and I see why. If I were able to work out, I'm sure I would be losing more weight."

• Che...
• Taken for less than 1 month
• February 25, 2017

For Weight Loss (Obesity/Overweight) "After a bad breakup and a hard time at work, put on 40 pounds over 7 months, but then I went from 314 pounds to 219 pounds over 2 years. Then things got crazy again, and I went from 219 to 259 on 2/17/17 when I got weighed at the doctor's office. He knew how hard I worked to drop those original 96 pounds and wanted to get me back on track. Started Phentermine 37.5 on 2/20, it has been 5 days, and I'm down 8.6 pounds. Suppresses my appetite, don't want to snack or crave junk food. I have to literally make myself eat -- unfamiliar territory after my gluttony these last 7 months! Drinking 128 oz of water a day. Meals are lean and around 800 calories. Side effects: insomnia and mild constipation. Hoping it continues this way -- would love to drop 30 pounds at my 1-month mark!"

• Div...
• Taken for 1 to 6 months
• October 27, 2015

For Weight Loss (Obesity/Overweight) "I started taking Phentermine 37.5 mg in July 2015. My weight loss was very slow in the first month, only about 5 lbs or so, despite a daily workout routine. After about six weeks, the weight just started falling off. I am in my third month and have gone from starting at 247 lbs to 220 lbs, a total of 27 pounds... I have not exercised the past month due to back problems, yet I still have no appetite... Side effects are dry mouth, constipation, and an unpleasant taste in my mouth. Insomnia is bad, however, even though I don't get much sleep, I am never tired either. I say the benefits outweigh the side effects! My mood is much improved, and I have no taste for drinking alcohol or smoking! It's definitely worth a try."

• Dae...
• Taken for less than 1 month
• August 23, 2017

For Weight Loss (Obesity/Overweight) "I started my journey on August 10th. It has been almost two weeks since being prescribed this medication, and I have nothing but great things to say about it! I have lost an additional 4 lbs since my first weigh-in at 208 on August 9th. Even the few side effects that I have are totally worth it. I almost immediately get dry mouth not long after taking the pill, but I am consuming at least 64 oz of water daily, that is good! Previously, I would choose other things not so great for me. Slight constipation, although it could be my vitamin, I can deal with that. I am extremely energized. I am eating way less but do try to stay conscious of making sure to nibble throughout the day. My diet is normal, I eat what I want but stay under 1800 calories."

• JRa...
• Taken for less than 1 month
• April 2, 2018

Phentermine for Weight Loss (Obesity/Overweight) "I'm a 6'2", 47-year-old overweight female. Like everyone else that is overweight, I have tried everything on the market! I started using Lomaira 2 weeks ago after my doctor recommended it to me. Previously on Phentermine 37.5 mg tablet, she thought maybe it would help to curb my appetite since I take these 3 times a day. Problem #1: it made me super constipated! I ended up in the hospital last week with severe stomach pain. My X-ray showed my colon was packed full. Problem #2: It kept me wide awake at night!! I would try to go to bed around 8-9 pm and would be back out of bed by 10 and wide awake until 4 am... complete insomnia! Problem #3: it never curbed my appetite, in fact, I ate worse taking Lomaira than with the Phentermine. Weight loss pills aren't for me, I guess! Good luck to everyone that is having success with this drug! I envy you!"

• Sar...
• Taken for 1 to 6 months
• August 2, 2018

For Weight Loss (Obesity/Overweight) "I was prescribed phentermine for a total of six months, which I know is longer than many recommend, but my doctor approved it, and I trust him and have not seen any poor health side effects. Regardless, I have lost almost 90 lbs in those six months (from 294 lbs to 205 lbs) with a large change in diet and exercise, but mainly diet. I have noticed the pills doing less for me and am in the process of getting off of them, but over those months, the only effects I had were minor lightheadedness and constipation. I’m confident that even when I’m completely off the pill, I have been able to develop the habits to keep the weight off and continue losing weight. Without phentermine, I don’t think I would’ve had the kickstart I needed in the beginning to be where I am now."

• TOR...
• Taken for 1 to 6 months
• July 6, 2018

For Weight Loss (Obesity/Overweight) "I have been taking phentermine 37.5 mg since March 18, 2018. As of today, July 6, 2018, total weight loss is 53 lbs. My starting weight was 250, today, 197. I have severe arthritis in my hips, knees, and ankles, so I can't do any workout programs. I have added in a strict 1200 calorie, high fiber, low fat, low carb, and low sodium diet. The only downside I am experiencing is severe constipation. I have to take at least 1 women's laxative a week. Other than that, I am pleased with my results!"

• Mis...
• Taken for less than 1 month
• December 17, 2015

For Weight Loss (Obesity/Overweight) "I posted around day 5 of taking.... it is down below (which gives you my background with PCOS & my journey). I started phentermine 37.5 at 197 lbs on Dec. 3rd. I did weigh myself on day 12, and I was down to 189 lbs. I think that pretty much says it all. I am not really experiencing the main side effects (dry mouth, jitters, insomnia). I can drink coffee, and I do my best to keep to 1,200 calories a day. I do not exercise. I sit at a desk all day, then nanny for 4 hours in the afternoon. The only side effect that is a little annoying is constipation. This is troublesome because I normally have stomach trouble. I am trying prune juice as of today."

• Wea...
• October 10, 2016

For Weight Loss (Obesity/Overweight) "Had my first follow-up today, been on phentermine for 25 days and I'm down 19 lbs. A few side effects... cotton mouth, anxiety occasionally, like twice a day for a brief period, and constipation, which has led to hemorrhoids. But, given the success of 19 pounds in 25 days, the side effects are definitely not severe enough to stop. I thought about stopping if the weight wasn't coming off, but it definitely is. I encourage you to use MyFitnessPal and track what you eat as well. I'm a 6'4" male that started at 322 pounds. All I eat is between 1,200-1,500 calories per day and feel great!"

• Anonymous
• December 20, 2010

Phentermine for Weight Loss (Obesity/Overweight) "I started taking the generic version 6 months ago. I had to go to my doctor every two weeks for a weigh-in and to 'earn' another prescription (had to show some weight loss). The first two days were the hardest, with nausea. I felt tired but had insomnia. I did lose 9 lbs the first 2 weeks, but after that, I have only lost about 1-1.5 lbs/week. I began working out 3-4 times a week for 30 minutes to improve muscle tone and cardio fitness. The dry mouth and constipation were bad, so I began taking the pill every other day, which really helped. I did not notice any increase in appetite. So far, I have lost 40 lbs. My doctor is thrilled and said I can continue with skipping 2-3 days. I plan on stopping when I hit 50 lb loss. I want to lose 100 lbs total."