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Adipex-P and Tremors: What Users Say

Tremors: mentioned by 26 users (4.3%)

Based on user experiences from 609 Adipex-P reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

dry mouth 27.3%
headaches 7.7%
insomnia 7.4%
tremors 4.3%
increased heart rate 4.1%
loss of appetite 3.4%
anxiety 3.0%
constipation 2.8%
nausea 2.6%
dizziness 2.5%

Reviews for Adipex-P

Commonly mentioned side effects
  • Mag...
  • April 1, 2009

For Weight Loss (Obesity/Overweight) "I started using phentermine (Adipex-P) in the later part of February 2009. My first weigh-in was 233 pounds. I now weigh 203 pounds. The only side effect I had was a slight case of the jitters that lasted about a week. Other than that, everything has been great. I do exercise a few times a week, most of the time. Nothing crazy, just the treadmill and weights, when I feel like it. I do have high blood pressure, and I take lisinopril 10mg for that. I also keep up with the calories and sodium I take in, and I only drink water. If I need flavor, I buy the pour-in packs (e.g., Crystal Light, or Sam's Choice). Just the fact that I don't drink ANY sodas is a big accomplishment for me because I was a Pepsi-holic."

10 / 10
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137 Report
  • Kai...
  • Taken for 1 to 6 months
  • March 10, 2016

For Weight Loss (Obesity/Overweight) "I'm 5 ft nothing, weighed 155.4 when I started. I tried dieting, exercising, Weight Watchers, and kept gaining weight. I was prescribed Adipex on Nov 18th, 2015, and the pounds started falling off. I took the whole pill and felt anxious and shaky for about 3 hours, and after that, no bad symptoms. I took it for 2 months and lost 26 lbs. I stayed off for a month, and I didn't gain a single pound back. After a month off, I got back on, following instructions from the doctor when I first started, and by the first week, I lost 5 lbs. I have 10 days left, and I am at 118. My goal weight is 115. Adipex changed my life, and losing 30+ lbs in 3 months is amazing. I would recommend it to anyone! Also, it is not expensive at all, with or without insurance."

10 / 10
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64 Report
  • bcl...
  • Taken for less than 1 month
  • March 18, 2013

For Weight Loss (Obesity/Overweight) "I have been taking Adipex for 4 days now. I have lost 13 pounds somehow. I changed my eating to only intake 1000 calories a day. I take half a pill in the morning and half a pill at noon. I have severe dry mouth and drink about 10 bottles of water a day. I am having trouble sleeping for the last 2 days. I get the jitters really bad about 30 mins after I take the pill, it lasts for a few hours. No issues with my heart rate! I am hungry until my stomach hurts. I was an overeater, so it's pretty painful! With all that, this pill is worth it. I am excited about my progress so far and can't wait to see what I can get down to in a few months!"

9 / 10
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78 Report

Frequently asked questions

  • Zor...
  • Taken for less than 1 month
  • September 15, 2021

For Weight Loss (Obesity/Overweight) "I was always wary about weight loss pills due to the jittery effect they give you. I decided to try the Adipex-P, and it was the best decision I had ever made. It gives no anxiety or jitters, on the contrary, I felt relaxed. Not like a drug relaxed, it made me feel as if I had slept so well that I felt perfectly healthy. By the way, it had been many years since I felt that well. It just curbs the appetite, and you start cleaning and getting on with life, as one is supposed to do. I went from a whopping 400lbs to 165lbs in 1 year. I only used it for the first month, after that, my body took off on its own, but it was the perfect start."

10 / 10
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30 Report
  • Sli...
  • Taken for less than 1 month
  • October 26, 2015

For Weight Loss (Obesity/Overweight) "Oct. 16th - 5'8, 256 lbs, Male. Oct. 26th - 240 lbs even. 16 lbs - 10 days. Loss of appetite, which makes it easy to control how, what, and when you eat. Dry mouth only if you don't drink lots of water, which is absolutely necessary to dispose of the fat you're losing. 1/2 pill - modest energy. Whole pill - a bit shaky, but I love shaky. Feels like a miracle is happening. Getting my life back slowly but surely."

9 / 10
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55 Report

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  • Aim...
  • June 5, 2017

For Weight Loss (Obesity/Overweight) "I work at an endocrinology clinic. And there, I have seen crazy stories about Adipex - from 191 lb in 1 year to 30 lb a month. So, I said to myself I'm going for it. In the first 3 days, I am 4 lb down. I have plenty of energy, I do have a dry mouth, and one time after I stood up from the bed I felt dizzy. Now, my post is more for the people who are taking it - please take 1200 cal per day. If you take less, you will have jitters, and you would start doubting the medication. And yes, I push myself to eat because I want to eat, but I eat small portions. From day one, I want to adjust my portions, always small portions. After 1 month after my medication finishes, I will continue small portions and won't exceed 1200 cal. Good luck."

10 / 10
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44 Report
  • Ono...
  • Taken for 1 to 6 months
  • July 23, 2015

For Weight Loss (Obesity/Overweight) "I am now exactly one month in. My start weight was 301, and I am now at 278! Hooray! The only side effects I still have are dry mouth, nasty taste in my mouth, and jitters from time to time. I will update again in one month :)"

10 / 10
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51 Report
  • Nik...
  • Taken for 1 to 6 months
  • March 8, 2017

For Weight Loss (Obesity/Overweight) "On 1/24/2017, I started taking 1 pill of Adipex 37.5 mg once a day. I started at 262 lbs. As of today, 3/8/17, I now weigh 247 lbs. It gives me energy without the jitters. I also suppress my appetite, I force myself to eat 5 small meals a day. I also do at least a 30 min workout 4 times a week. Adipex works! My normal doctor will not prescribe this medication, so I see a weight loss doctor. I pay 100.00 a month for the meds."

10 / 10
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44 Report
  • lib...
  • Taken for less than 1 month
  • March 11, 2016

For Weight Loss (Obesity/Overweight) "I started this medication on 3/4/16. Starting weight was 208. After a week of taking it, I've lost 10 lbs. I weigh now, is 199. This pill works! I've been eating small snacks and working out. So far, the only problems I've experienced are dry mouth, dizziness, restlessness, and slight tremors for the first few days. I'll give an update in about a month."

9 / 10
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47 Report
  • Tra...
  • April 25, 2017

For Weight Loss (Obesity/Overweight) "I've been taking a low dose of Adipex for about 2 weeks now. I am 5'7" and started around 165 lbs. I haven't been taking Adipex regularly, as I am a nurse and work rotating shifts, and it suppresses my appetite so much that when I want to go out for nice meals/enjoy weekends, I also don't take it. I have not experienced any jitters or vision effects, but I am much more focused and have much more sustained energy that I actually save for night shifts. I eat like a toddler, being constantly on the go and rarely have time for the gym. I do, however, spend 36-48 hours on my feet, running around at work. So far, without any effort, I am down 7-8 lbs. I highly recommend this, and I'm sure results would be exaggerated with diet and exercise."

8 / 10
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40 Report
  • des...
  • Taken for less than 1 month
  • October 31, 2015

For Weight Loss (Obesity/Overweight) "I just tried this medicine because I had continuously heard it worked. I will say I felt a lot of energy for the first couple of hours after taking it, and I did lose 5 lbs the first two days, which was GREAT! But... I experienced terrible side effects. Other than the normal dry mouth, some jitters, and restlessness, I experienced severe mood swings, irritability, and I became angry out of nowhere. I know side effects are different for everyone. This was my personal experience. I think the medicine could've really helped me with losing weight, but I'm not willing to have the side effects. Good luck to everyone!!"

3 / 10
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43 Report
  • tni...
  • March 31, 2016

For Weight Loss (Obesity/Overweight) "I started taking Adipex on 11/14-4/15, and without diet and exercise, I instantly lost 25 lbs. I weighed 150 lb (only being 5'2). By the end of the first month, I was down to 126 lb, my goal being 125 lb. I stopped for a while and ended up gaining all but 3 lbs back. Now I am back on it and I'm excited to see where I'll be a month from now. The side effects I have had both times are dry mouth, shakes, and a short temper. I'll report back in about a month, maybe sooner."

10 / 10
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38 Report
  • Kay...
  • Taken for less than 1 month
  • February 17, 2016

For Weight Loss (Obesity/Overweight) "I just started taking Adipex on 2/16/16. I weigh 216. I split my pills in half: half at breakfast and the other half at 2 pm just so I don't get the shakes so much. I am 31, and this is my heaviest point in my life. I want to get down to 145. I eat 6 meals between 7 am and 7 pm, that's killing me, lol. I exercise every day except Sundays. I'll check back in 2 weeks and give updates."

10 / 10
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32 Report
  • Bet...
  • Taken for less than 1 month
  • June 8, 2015

For Weight Loss (Obesity/Overweight) "I started phentermine on 5-26-2015. First day taking it, I got shaky, the chills, and my heart raced, but it will be 2 weeks tomorrow and those symptoms are no longer there. Unfortunately, I don't get much energy as others described, but my appetite has decreased a lot and I get fuller easily. I've lost 15 lbs so far, but I eat about 1300 to 1600 calories a day and walk every day."

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

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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22 Report
  • on...
  • August 30, 2011

For Weight Loss (Obesity/Overweight) "As of today, August 30, 2011, I've been taking Adipex for exactly one week, and I've lost 9 pounds. I think it works wonders aside from the cotton mouth, restlessness, and jitters. It also gives me an extra little push of energy. I love it. I'm eating healthier, drinking plenty of water, and taking the stairs now instead of the elevator. I haven't even done any strenuous exercise. I love, love, LOVE it!"

10 / 10
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26 Report
  • Anonymous
  • January 4, 2012

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."

10 / 10
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25 Report
  • Myn...
  • October 19, 2015

"I am down 13 pounds in 10 days of taking this medication. Haven't eaten much since starting, so I'm pushing the fluids to keep hydrated. No exercise, but I'm a mom of 4, so I'm kept busy running around after kids. Jitters, insomnia, dry mouth, and dizziness are some side effects I've had, but hoping that my body adjusts to the medicine soon."

9 / 10
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18 Report
  • Rea...
  • Taken for less than 1 month
  • June 5, 2015

For Weight Loss (Obesity/Overweight) "I just started Adipex on June 2nd, 2015. I weighed 194 at 5'8. I do have some side effects, I have the shakes, dry mouth, and I'm not hungry at all. I'm not going to weigh myself until I go back to the doctor on July 1st, 2015. I work midnights, so I'm not very active, especially with my profession, but I'm definitely excited to see results and go on to be happy with my life. :) Will post an update in July."

9 / 10
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22 Report
  • Sar...
  • December 29, 2009

For Weight Loss (Obesity/Overweight) "I'm 39 years old, height is 5'4'', and I have been on Adipex for a month now, and this medicine works. Before, I weighed 199 lbs, and now I'm down to 181 lbs. I haven't started going to the gym yet. I just watch what I eat. I take half of the tablet every day around 10:30 a.m. Yes, I experience dry mouth, but that helps in drinking lots of water. I had jitters the first week, and that is gone now. It didn't bother me at all because I have a set goal. I just joined the gym and will be starting next week. I will update you after a week in the gym... Good luck to all."

10 / 10
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21 Report
  • joy...
  • October 6, 2010

"I've been taking Adipex 37.5 mg for 4 weeks and have lost 20 lbs. I take half a pill in the morning, the other half early afternoon. No jitters, shakes, or bad side effects this way. LOVE the results, so happy!"

10 / 10
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17 Report
  • joy...
  • October 6, 2010

"I've been taking Adipex 37.5 mg for 4 weeks and have lost 20 lbs. I take half a pill in the morning, the other half early afternoon. No jitters, shakes, or bad side effects this way. LOVE the results, so happy!"

10 / 10
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17 Report
  • Ama...
  • July 11, 2011

For Weight Loss (Obesity/Overweight) "I have been on Adipex for one week, to lose the last 30 lbs. (I have lost 80 on my own-but plateaued forever!). In the past week, I have lost 10 lbs. I am so excited to be closer to my goal. I never feel my heart racing or shaky, and I am one of the rare people that it helps relax. I have adult ADD. The first few days on the medicine, I took a nap-that never happens."

10 / 10
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17 Report
  • Kac...
  • Taken for less than 1 month
  • January 15, 2022

For Weight Loss (Obesity/Overweight) "I started phentermine (Adipex-P) 37.5 MG tablets on 01-14-2022. My current weight is 235 lbs. It took about 30 to 45 minutes to feel the energy that it gives you, but I didn’t get the jitters or anything. I was on 15 MG capsules, but it didn’t work well for me. I can tell you more after time passes. My goal is to lose 50 lbs (185 lbs). I am on a good diet, a lifestyle change for the better, so this weight will stay off for good!!"

10 / 10
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6 Report
  • Anonymous
  • February 24, 2012

For Weight Loss (Obesity/Overweight) "I have only been on Adipex for a week and a half now, and lost about 4 pounds in the first 3 days, but now I am at a standstill again. I am on a 37.5 dose and have never experienced jitters, extra energy, and worst of all, I am still hungry! I do not eat that much in hopes I will still lose weight. Also, I work out at home for at least an hour, 3-5 times a week, mixing cardio with weights. I only have the prescription for one month, so we will see how the other 2 1/2 weeks go."

5 / 10
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15 Report

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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.