r/Phentermine_

All sudden my heartrate is becoming high and getting some chest tightness/pain , 7 weeks exactly today and it’s been about a week in half since I’ve noticed it. And it’s mainly when I get some anxiety and nervousness. Not really when I workout or anything else. I don’t know if the phentermine is just bringing it out more that now I’m noticing it when I get anxious about things. anyone else experiencing this? It’s truly so random . I didn’t even experience a racing heart at all since starting it until now lol

Hi all my doctor just increased my Phentermine dosage from 15mg to 30mg. The 15mg really didn't do anything for me. Any suggestions or experience with the 30mg? I'm just hoping it helps me more than the last dose.

Hi everyone, we all know that phentermine is making us constipated but as someone who is chronically constipated since a young age despite all the fiber she eats 😂.

I was wondering what you guys are using to help yourself.

I’m curious to hear about other women’s experiences with phentermine and weight loss. My doctor initially started me on 15 mg, and I did have some early success with weight loss and appetite suppression. After I stopped noticing results, my doctor increased my dose to 30 mg.

I’ve noticed a similar pattern with both doses: during the first week after starting or increasing the medication, it seems to work well and my appetite feels much more manageable. After that initial week, however, my hunger gradually comes back—especially during the afternoon and evening. I’m still trying to stay within my calorie goal, prioritize protein, exercise regularly, and make healthier choices, but the returning hunger makes it more difficult.

For anyone who has successfully lost weight while taking phentermine, how long were you on it and how much did you lose? Did your appetite suppression decrease after the first week or two? If so, did it eventually improve, or did you have to adjust your routine with your doctor?

I’d also love to know what made the biggest difference in your progress. Did you follow a particular calorie range, prioritize a certain amount of protein, change when you ate your meals, or follow a specific workout routine? I understand everyone responds differently, but I’m interested in hearing real experiences and any helpful habits that contributed to your success.

Hit 6 weeks as of yesterday, I’m down 14 pounds. Most all my side effects are slowed down or gone entirely. This is such a slow process and to me I haven’t noticed a difference which I know that’s normal , just had a update with my doctor and she’s adding topiramate for me to take in the evenings. She said they work well together to keep losing weight. I am doing 3 months worth of phentermine as of right now, I know a lot of doctors do 3 months on and then a month off and then back on , havent discussed that with her yet but we shall see. I am proud of myself and I’m glad to be losing weight again!

I just started on phentermine today as my insurance won’t cover GLP-1 medication and I wasn’t sure about using one of those anyway. Phentermine was suggested as an alternative and I decided to try it. I have a few health conditions that make exercising hard as I have no energy. My doctor and I agree that losing even just 10-20 pounds will help resolve some of my symptoms and help improve my energy. I already notice a little boost and haven’t felt hungry at all today since taking the first dose this morning. I am still eating small amounts but don’t feel any cravings for sugar or wanting to eat out of boredom.

I am excited and hopeful that this will work, I know it’s not a magic overnight cure, but a tool. I have a dietician too guiding my eating and exercise routines, and I am determined to get healthier. Weight isn’t even my main concern, just feeling healthy and having my energy back will be enough.

I am starting at 221 pounds and am 5’7” with a BMI of 34. My overall goal is 60 pounds to lose in order for my BMI to be in normal range.

Are there any tips or suggestions you found helpful? What has been everyone’s experience?

Hello yall,

I asked my doctor about Phentermine and was prescribed after completing all my labs. Baseline is normal for a 237 pound male. My heaviest was 273 and I dropped 40 pounds without any weight loss pills, just dieting and exercising. I’ve hit a plateau and waned to try a new option. Just wanted to share my start and stat for myself and for whoever is interested.

237 pounds as of this post.

I split 37.5 mg in half and I have been taking it for about a month. I have lost weight but I don’t have any extra energy, in fact I’m tired most of the time. I even take afternoon naps sometimes after taking my pill in the morning.

Does anyone else experience this?

Is anyone doing Standard Keto or any more specific Keto diets like Cyclical Ketogenic Diet (CKD), Targeted Ketogenic Diet (TKD) or other Keto strategies?

How’s it going? Results?

What does your script writing doctor, nutritionist and/or cardiologist think of Keto, and Phent + Keto?

Just started Phentermine today, as I'm allergic to glp-1's. Should I be doing keto also? Or just eating clean? thanks!

Last year back in September I started taking phentermine with a starting weight of 204lbs. By January I was already February I was already down to 140 but my goals is 120lbs. My height is 5’6 and I have been stuck in 146lbs since March and it’s already August! I was thinking retaking phentermine since is not prescribed I just have my way of getting it. So I wanted to see if someone here has experience taking phentermine at a healthy weight and if there has been any complications.

I live in Sarasota Fl, I had a Doctor in Lakeland that prescribed it to me. They are too far. I wish to see a Doctor that prescribes it to the pharmacy and bills insurance for visit. It is too costly for me to pay for it all. Does anyone in this area see a clinic or Dr that will do this? Any negative feedback will be ignored. Thanks in advance.

Today makes day 6 of being on phentermine
37.5 also while taking metformin 500mg , i lost 7lbs since being on (phentermine)

Side for me : mood swings, energetic, slight diarrhea some throwing up as well , insomnia , anxiety, elevate heart rate

Sidenote/ i have been taking metformin for a month now …. i have had some days of me being inconsistent as far as weight i did loose 7 lbs while taking it before i started taking the (phentermine) yes my doctor said its ok take both together with that being said i am at a total of 13lbs lost🥳🥳🥳‼️ ((my doctor asked of me to loose 5 pounds within 4weeks of being on phentermine in order for me to continue it ))

No i dont work out , no i dont go on long walks i do try to get in at least 4000 steps a day! As far as food i have a hard time of finishing my meals

Started Phentermine on June 17 (SW: 178 lbs). Since day one, I’ve been extremely consistent:

Tracking: Logged every single bite and drink.

Diet: Max 1,400 calories/day, 80-100g protein, under 2,000mg sodium. No alcohol, no processed food. Mostly chicken breast, steamed veggies, and protein smoothies. Lots of water.

Activity: Burning ~300 calories/day walking.

I haven't seen the scale move the way it should given the deficit. I’m down to 172 from June 17-August 7 taking it daily. What am I missing here? Is it a tracking error I weigh all my food, water retention, or something else?

Hey there I’m 23 f and 10 months pp and starting at 257lbs. I just started phentermine 15 mg and I’m not really having side effects so far thankfully. I’m wanting advice. I’m not really sure how to eat. I’ve been eating high protein and low fat for a while now since my husband is in the military and keeps fit and we both eat the same things the only difference is I’m a sahm and I normally skip breakfast and lunch. My dr who prescribed me the phentermine basically said eat less and that’s how to lose weight. So with that being said. I have continued to skip breakfast and lunch for the most part with maybe an occasional snack of cheese stick, salad, or protein shake and then I eat a smaller portion of dinner instead of my usual portion. My husband says that I should be eating more. I’m just confused and not sure what to do. Thank you in advance.