Phentermine and Nausea: What Users Say (Page 2)

• Cry...
• June 22, 2019

Phentermine for Weight Loss (Obesity/Overweight) "Got these pills and took a pill after breakfast, and my heart felt like it was going to pop out of my chest. Increased heart rate, blood pressure. Also gave me a terrible headache and nausea. Felt like I was going to die. Had to go to the hospital, and the doctor told me I was getting an anxiety attack as well. Would not recommend it. Terrible experience."

• lil...
• Taken for less than 1 month
• January 26, 2022

For Weight Loss (Obesity/Overweight) "Not worth it! I was literally one pound overweight and wanted to lose 10 lbs. For two to three weeks, I was a little energized and had a hard time falling asleep but really had no scary side effects at all. Then, at about three and a half weeks after beginning phentermine, I was awakened in the middle of the night sweating and with my heart racing out of control. My heart was beating so fast I couldn't get a number. It ended up being 204 bpm, which is crazy dangerous. I had to be given a heart medication to slow it down, and even then, it stayed at about 110 for three or four more hours. I was released to go home, and I felt just tired and drained the following day. I went to bed early and got up feeling normal. I obviously stopped using the phentermine, and my heart is at its normal 60-65 bpm. Doctors said I was lucky I didn't have a more dangerous arrhythmia or just collapse. Beware of this medication!"

• Ash...
• Taken for less than 1 month
• October 5, 2016

Phentermine for Weight Loss (Obesity/Overweight) "I took 37.5 at 7:00 am. The first five minutes, I felt a warm sensation all over; about 20 minutes later, I felt as if my body was drunk and heavy. Then a burst of energy came; I could not stop moving for the next 4 hours. I detailed, cleaned my whole house. I could not eat (eat before the pill); food was a turnoff for me. I felt full and satisfied with 2 crackers. I only gave it a 7 because I was very nauseous. I vomited without warning on my floor. Stayed pretty sick to my stomach all day. I lost 2 lbs the first day."

• Bla...
• Taken for less than 1 month
• August 16, 2013

For Weight Loss (Obesity/Overweight) "I've been on this medication for a little over a week, and it is working. I began at 295 lbs and am currently weighing 280.6 lbs. Now, although it is working, I feel a bit of nausea most of the day. I also have briefly felt a bit of discomfort in my left arm. However, that occurs rarely. I just don't care for the persistent fuzziness and the nausea. But I love the weight loss."

• Bea...
• Taken for 1 to 6 months
• July 9, 2014

For Weight Loss (Obesity/Overweight) "My experience was successful! I started the pill on 03-26-14, at which time I was 287 lbs. By 04-30-14, I dropped down to 276 lbs. I must say it really suppresses the appetite, and I recommend that you eat at least breakfast daily to avoid getting headaches and feeling nausea. Although I did have those side effects, I do recommend eating something again as stated, preferably breakfast. The last time I weighed myself, I was 266, however, because I am no longer eating healthy and taking the pill when I remember to take one, I notice I have gained some of the weight back as my PCP indicated I would. All in all, phentermine is great if you are going to adjust to permanent lifestyle changes/eating behaviors."

• Khr...
• Taken for less than 1 month
• May 29, 2013

For Weight Loss (Obesity/Overweight) "I'm 5'5" and I started taking this pill on 05/24, weighing 189 lbs. Today is 05/29, and I weigh 182 lbs. My goal was to lose 5 pounds a week, but I feel like I may lose more. I get jittery in the mornings after I take it and a little nauseous, but it goes away. I don't exercise. I eat once in the morning and then I have no appetite throughout the day. It does keep me up at night if I don't take it earlier than 10 a.m. And I definitely get dry mouth, which makes me crave water. I haven't started exercising yet, hopefully, I lose more then."

• LAC...
• April 13, 2015

For Weight Loss (Obesity/Overweight) "I started taking this medicine a little less than a month ago, and it is amazing. I have lost 13 pounds so far! I personally do NOT exercise while taking this pill, and I still have seen amazing results. I eat every 2 hours, whether it be an apple, trail mix, Smart Pop popcorn, etc. I drink water throughout the day, but I occasionally will drink a diet soda. The only negative side effects that I have experienced would be nausea, taste buds change, and dizziness at times. Weigh every WEEK so you don't get discouraged, and keep in mind that results differ. Good luck!"

• 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."

• Tee...
• July 29, 2019

For Weight Loss (Obesity/Overweight) "So I started taking phentermine about 2 weeks ago. It made me feel really wired, had me vomiting and nauseous all the time. I stopped taking them, and now I am about to try to take half the pill so my body gets used to it."

• Anonymous
• January 4, 2012

Phentermine for Weight Loss (Obesity/Overweight) "Started at 205, 5'4", age 30 female. Experienced the traditional side effects of initial dry mouth, jitters, and sweating, but also lost the interest in eating. All thoughts of eating (especially when bored) went away, found that most often when others were eating or even the smell of food no longer turned my hunger on and in some cases made me queasy. Next, my mental focus and energy skyrocketed, and I was able to complete projects with more quality and determination than ever before. The pounds melted away with virtually little exercise. Lost 25 lbs in the first three months, cannot wait to lose the next 25 and am now including a workout regimen I'm doing at home with the Wii."

• Bus...
• Taken for less than 1 month
• February 26, 2014

Phentermine for Weight Loss (Obesity/Overweight) "Update after 7 days: Starting weight: 161.4 lbs Current weight: 158.4 lbs I started off taking a 1/2 tablet in the morning, 30 mins before breakfast. The first few days were okay, took the edge off hunger for sure, but I felt unfocused. On day 5, I traveled out of town and started feeling a little nauseous, so I held this medicine on days 6 and 7. I slept so much these two days and was very hungry. I was just so relieved to not be nauseated that I allowed myself to eat some not-so-healthy foods on these two days. This is partly why I do not think I lost much weight this first week. I started back on my 1/2 tablet regimen this morning and feel quite good. I think the nausea may have been related to a certain food I had eaten."

• Bos...
• April 24, 2017

For Weight Loss (Obesity/Overweight) "I began taking phentermine on April 10th. I started with 1/2 dose and then went up to a full dose. The first week was fine, it wiped out my appetite, but by the second week, I began experiencing severe nausea, vomiting, and deep depression. I could not stop crying, and it was over absolutely nothing. I discontinued this after 2 weeks. I lost 11 pounds, but this depression is not worth it. Apparently, this side effect is not very common. I wouldn't wish this feeling on anyone. I wish I could have stayed on it because it definitely works, and I have no doubt I would have reached my goals of losing 30 pounds."

• Red...
• Taken for less than 1 month
• February 3, 2017

Phentermine for Weight Loss (Obesity/Overweight) "I started Adipex-P 1-25-17. The first day, within 30 mins of taking it, I was nauseated and started choking down water, trying not to vomit. Sadly, I did anyway. Afterwards, I continued the water, the nausea settled, and I decided to try it the next day. So far, it's been 10 days on a 1300 calorie diet & workout 3-5 times a week and drinking mostly water, only juice once a week, and I'm down 9 lbs. I'm 35 and very overweight, with a goal from the doctor of 31 lbs lol and that is me being reasonable. Anyway, weight loss is a struggle, and I wish everyone success with their goals, but I think it's worth trying!"

• 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."

• Dan...
• March 21, 2021

Phentermine for Weight Loss (Obesity/Overweight) "It works well at giving you energy, but it gives the jitters sometimes. It definitely curbs the appetite, but can also make you a little queasy. I lost weight with it, but stopped taking it after about 6 months."

• Sal...
• March 17, 2016

For Weight Loss (Obesity/Overweight) "I started taking this medication on 3/15. I am a 36-year-old female who weighed 202 lbs. I have been working out for months in a boot camp setting, and instead of losing weight, I was gaining due to not keeping a proper diet. When I went to the doctor, my doctor stated that I should try this as my weight was higher than she would have liked. I spoke to a friend who had taken it and then decided to give it a try. In the two days that I have taken it, I have suffered from extreme thirst, dizziness, nausea (if I don't have my mini meals like I am supposed to), and insomnia. I weighed myself today and went down 4 lbs, and that's in two days. I read in the previous reviews that the side effects subside after the first week, and that's what keeps me going."

• 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."

• Par...
• July 30, 2015

For Weight Loss (Obesity/Overweight) "I started phentermine on 7/24/15 at 379.5 lbs. Today I weighed in at 363 for a total loss of 16.5 lbs in 7 days. The first day I was extremely nauseous, highly energetic, cranky, and had dry mouth. The dry mouth and crankiness went away after the first day. I generally eat 200-300 calories and a 300-calorie protein shake with 52 g of protein. I supplement with various vitamins and work out. I am hoping to lose another 10 in the next month. Overall, I am not even slightly hungry, although my disgust for food is starting to wane. Example of meal: half a piece of cheese, one turkey slice, half a cracker; then I am done. Hoping I can tolerate 2 protein shakes by next week. Working great so far."

• Cri...
• Taken for less than 1 month
• August 7, 2019

For Weight Loss (Obesity/Overweight) "Today is the first day, and I do not like it. It did suppress my hunger, and I have yet to feel hungry since breakfast 8 hours ago, but I still ate a lite lunch. There are side effects for day 1. I did get a taste in my mouth, but it wasn't an unpleasant taste. Two hours after taking the pill, I felt a Nyquil kind of high. More like the next day hangover kind of feel. I did experience dizziness and was slightly jittery, but not much. Around midday, about two hours after the first rush, I felt another high rush hit, following dizziness and slight nausea... very slightly. I took the pill at 8 am, and it is now 4:53 pm, and I still feel the high/dizzy Nyquil hungover effect. After the second rush faded, it left me feeling drowsy."

• Jes...
• Taken for 1 to 6 months
• October 9, 2017

For Weight Loss (Obesity/Overweight) "STATUS UPDATE I stopped taking Phentermine on 5/3/2017 and was never able to get a prescription from my doctor until 10/6/2017. My starting weight this year was 243 lb, I started Phentermine 37.5 on 3/8/2017 with a weight of 237 lb and a height of 5'7''. On 5/3/2017, I weighed 219 lb and could not refill my prescription. On 10/6/2017, I went to my doctor to get the prescription filled, I weighed in at 210.2 lb. Up until the appointment, I was able to maintain and lower my weight with the help of diet and exercise mainly. Today is my first day back taking Phentermine 37.5, and I feel horrible. My side effects include feeling lightheaded, dizziness, a little nausea, and overall lethargic. I don't have an appetite but will force myself to eat soon."

• Val...
• Taken for less than 1 month
• October 15, 2017

For Weight Loss (Obesity/Overweight) "I started taking phentermine on 10/2, took 1/2 pill for three days and have since been taking a full tablet. I have a history of high BP, but have not noticed much change in that. Had an initial body fat level of 33. So far, I have lost 3-4 lbs. Side effects are dry mouth, a little nausea, but most irritating and concerning to me is the extreme sweating. I easily get drenched with sweat with the slightest amount of exertion. Tomorrow, I'm going back to 1/2 tablet and see if that helps. Is anyone else having this side effect, and how do you handle it? Thanks in advance."

• Anonymous
• July 12, 2016

Phentermine for Weight Loss (Obesity/Overweight) "Made me super sick. This was my first time trying it, I took the prescribed dose, and I've been trembling out of my skin for the last hour. My blood pressure is through the roof, and my heart rate is 141 bpm right now. I'm also nauseous and would be at the emergency room right now if not so terrified I'd crash my car if I tried to drive."

• KB0...
• August 14, 2017

For Weight Loss (Obesity/Overweight) "I started this on 8/11 at 274.4 lbs (female 5'6") and today I am down 4 pounds to 270.4 lbs. The first day I felt like a tweaker and had nausea in the morning, but I realized it was another medicine I take also making me sick, so today I felt fine. I got a normal lunch portion, and 1/4 of the way through I was done. I haven't thought about food at all. I've made a conscious effort to lower my carb intake to try to get the best results. I had already changed my lifestyle before starting this medicine, which I feel will continue to give me better results. It will make you very thirsty, so plan on spending a lot of time in the bathroom and refilling your water. I will check back in at the end of the month! Super excited for this little boost!"

• bri...
• April 25, 2011

Phentermine for Weight Loss (Obesity/Overweight) "I am a 27-year-old 5'2" woman. My weight started at 242 lbs on March 1st. I lost 8 lbs in a month, teaching myself how to eat right. I just went to the doctor on April 21st, and he gave me Adipex for 30 days. I started taking it on the 22nd, and today is the 25th, and I have lost 7 lbs in 4 days. I do have dry mouth, nausea, and a headache at night, and I have trouble sleeping. I don't have that burst of energy I hear so many talk about. I have not started working out yet, but tonight I will start that. I, too, do not crave sweets, and I also am a huge Coke drinker, and I haven't wanted one since I started. All I want is water, and that's a good thing. This is my first time taking Adipex, and so far I am very happy with it."

• Men...
• February 23, 2017

For Weight Loss (Obesity/Overweight) "I took phen 37.5 early 2016 and lost almost 35-40 pounds. Felt really great, but then my doc asked me to stop taking it. Now, in the last six months, I've gained everything back! Starting my phen from today again! But feeling too dizzy and nauseous. Hope this won't last for long... Good luck, everyone!"