hair loss on phentermine

Hair Loss On Phentermine

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Although hair loss isn’t listed as one of the phentermine side effects, it is something that is reported by many phentermine users in the phentermine support group on Facebook. However, while it may not be as a direct result of phentermine, hair loss is linked to vitamin deficiencies, weight loss and underlying medical issues, all of which can affect those taking phentermine. So, here we explain why you might experience hair loss on phentermine and what steps to take to minimize hair loss while losing weight.

Hair Loss On Phentermine

As hair loss isn’t known to be a side effect of taking phentermine, it’s not listed among the many other common and uncommon side effects here. But with many women making the link between taking phentermine and noticing that their hair is falling out in clumps or getting thinner, there is evidence that would suggest that the way in which phentermine can lead to hormonal changes and rapid weight loss could be to blame.

The type of hair loss, or alopecia, reported on phentermine typically starts to occur around three months into the treatment and can continue for as long as you are losing weight. The hair loss experienced by many phentermine users is most often caused by changes in diet, such as restricting calories or eliminating foods, and the hormonal changes which can occur when losing weight with phentermine. This hair loss does not tend to be noticeable straight away because the hair follicles lie dormant on your head for several months after the initial damage is done. By the time that you start to notice the hair loss, your body is already starting to correct the problem; within weeks of noticing this initial hair loss, you should then start to feel little hairs coming out of your scalp, indicating hair regrowth.

The type of hair loss you may experience on phentermine should be with the hair coming out at the root, which is normal hair loss that you would experience when washing or brushing your hair, albeit at a faster rate. However, if your hair is becoming dry and brittle and breaking off away from the root then this could be a sign of an underlying medical condition, such as hypothyroidism. But, whether you believe your hair loss to be phentermine-related or the sign of an undiagnosed issue, it is advisable to report it to your phentermine doctor for help and advice.

How To Minimize The Causes Of Hair Loss On Phentermine

There are many causes of hair loss, most of which can be treated by ensuring that you eat a balanced diet supplemented with a good multivitamin to add the nutrients you might be missing out on. Here we run through some of the reasons you might be experiencing hair loss on phentermine and how to help minimize the problem.

Lack Of Protein

Hair is mainly made from protein so if you’re not getting enough protein in your diet then your body may react by slowing down hair growth. A lack of protein plus the added hormonal changes and dramatic weight loss could all result in hair loss on phentermine. To minimize this effect, be sure to eat your recommended daily intake of protein – 46 grams of protein per day for women and 56 grams of protein for men. Click here for the top ten sources of protein with the fewest calories, and check out this list of protein-packed snacks to find out how to boost your protein intake between meals.


Close to 10% of women aged between 20 and 49 suffer from anemia due to an iron deficiency (the most common type of anemia), which can result in hair loss among other symptoms, such as fatigue, dizziness, and an ashen complexion. If you think you may have an iron deficiency then a blood test by your doctor will confirm this, and then the problem is easily fixed with a simple iron supplement.  A diet low in iron can also restrict your ability to lose weight so even if you’re not anemic, eating healthy foods rich in iron such as leafy greens, lean red meat and pumpkin seeds can help to boost fat burn and weight loss with phentermine.

hair loss on phentermine

Vitamin B Deficiency

Low levels of vitamin B are an easily correctable cause of hair loss. Many people taking phentermine are advised to get vitamin B12 injections to boost energy, but it would be more beneficial to take a multivitamin such as Phen Vites which includes all of the vitamin B complex. This is because other B vitamins, such as folate, are also lacking in the modern American diet, as reported in a recent analysis of the 2001-2008 National Health and Nutrition Examination Survey (NHANES). Additionally, B vitamins help to minimize phentermine side effects such as dry mouth, depression, and anxiety, and all B vitamins play a part in the way in which the body converts food into energy. And, in the case of hair loss, the B vitamin Biotin (B7) has been directly related to the prevention of thinning hair, so this is a vitamin that you shouldn’t be missing out on if you’re worried about potential hair loss on phentermine.


It’s advisable for anyone with weight problems to get their thyroid checked as it’s an increasingly common for women to be diagnosed with hypothyroidism, the term for an under-active thyroid. As well as weight issues, hypothyroidism can cause hair loss, but this problem can be rectified with the help of synthetic thyroid medication which will restore the normal functioning of your thyroid, helping to resolve thyroid-related problems, such as weight gain and hair loss.


Like hypothyroidism, Polycystic Ovary Syndrome (PCOS) can be an underlying cause of weight gain, and is also linked to hair loss due to hormonal imbalances in the body. Many women with PCOS find phentermine to be a great way to help them to establish a healthy lifestyle of diet and exercise, making weight loss easier which in turn helps to ease the symptoms of PCOS and restore their hormonal balance to minimize symptoms such as infertility and hair loss.

Dramatic Weight Loss

The crucial but indirect link between phentermine and hair loss is dramatic weight loss; phentermine can lead to dramatic weight loss and this in turn can cause hair loss. Sudden weight loss is a type of physical trauma which can result in hair loss, even if the weight loss is ultimately good for you, as is usually the case when a patient is prescribed phentermine due to obesity. The best way to avoid hair loss as a result of dramatic weight loss is to ensure that you’re eating a healthy and balanced diet containing enough calories to sustain your activity levels and keep your metabolism functioning properly. This will ensure that you lose weight at a healthy rate of around 2lbs per week and not losing precious muscle due to extreme dieting or excluding essential food groups.

The Nutrients You Need To Minimize Hair Loss

To improve the health of your hair while losing weight, be sure to eat a diet including these nutrients:

Omega 3 Fatty Acids

Eat sources of omega 3 such as oily fish, avocado and olive oil throughout the week to keep your hair healthy while also helping to burn fat and boost your metabolism.

Iron & Zinc

Iron and zinc work together to improve the health of your hair, and are both essential for a healthy body too, meaning more weight loss. Experts recommend eating lean red meat twice per week as it is rich in both nutrients. Non-meat sources of both zinc and iron include pumpkin seeds, sesame seeds, lentils, cashews and quinoa.

Vitamin C

Vitamin C helps the absorption of iron, so you should be sure to eat plenty of foods rich in vitamin C too. More than half of adults were found to lack this essential vitamin in a recent study of the modern American diet, despite it being found in abundance in a variety of fruits and vegetables, including kiwis, red peppers, citrus fruits, broccoli, Brussels sprouts and cantaloupe. But, if you’re not always able to get a range of fruit and veg, the weight loss multivitamins Phen Vites provide your recommended daily dosage of vitamin C.


Eat plenty of protein to minimize the possibility of hair loss on phentermine; these top ten sources of protein are a great place to start, and if you’re a vegetarian or vegan then check out these veggies with the most protein.


Eggs are a great source of biotin, and they also contain vitamin D – another important nutrient for healthy hair. If you’re not a fan of eggs then vitamin D can also be absorbed by spending around ten minutes per day in the sun and your daily recommended amount of biotin can be found in Phen Vites, the only multivitamin specifically designed to help those losing weight with phentermine to get all the nutrients they need for good health and weight loss.

Vitamin E

Vitamin E contributes to healthy skin, hair and nails, so it’s important to meet your daily requirements if you’re worried about hair loss on phentermine. However, up to 98% of Americans don’t get enough of this crucial vitamin, often because it’s found in ‘fatty’ foods such as nuts, seeds and oils, even though these fats are the good fats which you should be eating to help boost metabolism and boost weight loss. If you think you might be lacking in vitamin E, then taking Phen Vites each day will give you your recommended daily limit to help improve the health of your hair.


Have you experienced hair loss on phentermine? Let us know by commenting below.

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49 Responses

  1. I wish I knew about the hair loss. I had thin hair on top as it was. Now it\’s more than thin. I actually have bald spots. I\’m stopping this drug now, getting all the vitamins and pray my hair comes back

    • I only took it for two weeks….. and I have bald spots it still hasn\’t stopped falling out it\’s been almost a week Sense I noticed the patches missing and stopped taking it.I was in a constant state of anxiety. I broke down every day crying for no reason other then I was utterly depressed. My skin produced boiled on my arms ,back and face . I\’m 23 and wanted to feel pretty. I lost 10 pounds in two weeks I was told I should lose 2 pounds a week and it started falling off rapidly and I was sick 90% of the time…. the first day was great and it went down hill from there . I\’d take it back it I could . I loved my hair . It was the one thing i did love about myself and it\’s so dry and falling out in clumps.

  2. I took Phentermine 7 years ago. Lost 80 lbs in 8 months. Started losing my hair around 7 months of taking it. Hair loss continues 7 years later. Never again!!

  3. Devils advocate! It sounds like the perfect solution for everyone that wants to lose weight. Whether they have been overweight for years, struggling with food addiction, post pregnancy bounce back, eating disorders that paralyzed metabolisms, young or old 15lbs or 100lbs. It’s not worth it! I know being uncomfortable in tight clothes or feeling self conscious about everything is torture. The trade off is that once you get on this medication the extra boost of energy and seeing that stubborn weight finally drop after so many other diet/exercise attempts makes you feel good for a very short time. It’s awesome to be able to throw anything on and feel/look super comfortable and sassy – finally, the peace of mind in your weight struggle is gone. You feel this way the first time taking this medication and for the first 2-3 months. After 3 and definitely after 6 you start really fighting the heavy/ugly side effects. If you haven’t noticed your skin go from normal to inflammed. You will. From your face having every pore clogged and experiencing the awkward combo of sensitive/raw/thin/wrinkly skin with what seems to be “acne” but it’s more like ezxema, hives, blisters, boils, ringworm all mixed together and went to town all over your body. Your face, your scalp (hairloss like you’ve never experienced), chest, arms, back. It starts off with the oily clogged pores on your face and scalp that sucks but manageable because you’re so hyped to be “skinny” to 6 months later having to cover yourself because from your torso up you look like a monster. Your face is so raw that makeup stings, your scalp is so raw and blistered that brushing your brittle hair hurts, your arms and chest have the same “blister acne rash” that the uncomfortable feeling isn’t as worse as people looking at you and assuming you’re on drugs. Remember, you lost weight SUPER fast. You lost the weight but also lost a lot of hair, stopped eating, and devopled this systemic skin issue all at the same time. It’s like we went from a stable civilized member of society to portraying every single symptom of a ”insert street drug” serious addict. The side effects are not only all the physical symptoms above but emotionally you’re a complete mess. Chronic insomnia, nutritional deficiency from under eating or eating crap while metabolizing this battery acid pill. Panic attacks , vertigo, constant nausea become part of your daily routine. The last thing you care to think or accept is that this magic pill was the logical cause for all these things. There’s no way. Until you run out of the pills, decide to come to terms with the possibility and stop taking them. The insane fatigue and hunger that takes over the first month or two. You may binge or you may just tip toe back into eating minimally since your nausea is still lingering. You’ll sleep for hours and hours and still be tired. You start to see weight gain and not have energy for basic stuff. This is gonna suck. Until after 4-6 wks pass by and your entire skin clears up. Not leaving a single footprint of a scar to remind you of that nightmare. Your hair stops falling AND growing back. Your panic attacks end and your vision isn’t spining anymore. Your new side effects: Weight gain, fatigue, and depression from possibly being drained in dopamine/serotonin after going through the Phen rollarcoaster. If you can manage your weight from the first day you stop the pills and stay super aware/focused on eating healthy and catching up on rest. You will have zero issues coming off this. The daily crashes and withdrawal moodiness only happen while you’re on them. There are no “insane” side effects once you quit. Weight gain and some blah depression/fatigue is the worst part. All I know is the “feel good” stable/confidence mood is only when you experience those first lbs come off those 1-2 months. You can lose an extra 10-200lbs after your desired goal and the last thing you’ll be feeling is happy or confident because the physical and emotional side effects are TRULY that bad and toxic. I’ve never been so skinny yet so miserable in my life. So please-avoid this nightmare or make the positive choice to get off and learn to manage the hunger/fatigue episodes to regain your sanity and life back

    • Melissa did your hair ever grow back?

  4. I lost hair by the handfuls for months. My hair is very thin and I haven’t taken phentrimine for 6 months. No regrowth no sign of hair coming back in, it seems Inmay never get my full hair back. So sad. From one insecurity to the next. You can lose weight in different ways but you can’t make your hair regrow. So very sad about it. About to try rogain. Has anyone tried that?

  5. I\’ve been on during for 4 months and Just noticed a big bald patch it\’s stressing me out ,I don\’t want to do cortisone injections in my head ,it\’s so depressing I even noticed I\’ve lost my hair on my arms ?

  6. I noticed my hair coming out so much more than usual and mentioned it to my husband. He aske me if it could be a side effect of phentermine and I said it\’s not listed. So I continued to take it. When my hair came out in clumps, I decided to ask the Internet which I generally don\’t like doing. And i found all of your horror stories! I\’m so scared. I love my hair. My husband didn\’t mind me fat, but I\’m going to hate myself if I\’m bald. Can we sue?

  7. Has anyone\’s hair grown back after taking adipex/phentermine? I took it from March to June and stopped when I realized that my hair had fallen out terribly. It\’s now December and I haven\’t seen or noticed any regrowth as of yet. I\’m hoping that after a year it will get better. I had really thick long coarse natural hair. Now it\’s so thin and limp it\’s depressing. I\’m hoping it grows back. If it doesn\’t I hope we can sue the company for not listing it as a side effect.

    • Yes . Vitamin D3 IU, probiotics, Silica and VitaminB along with greens, berries, pumpkin seeds blended or eaten raw. Also coconut oil, rosemary oil and castor oil( not all at once). I had bald spots and severe hairloss after phet. Now its growing back after 6 months of all these.

  8. Ive only took about three or two weeks..and i noticed right away my hair falling out..i knew right away it was the phen and stopped!!✋ 3 months later you can see im thin on top.. Thank God i stopped after 2 weeks..but still after stopping hair kept falling..ibthink finally now its slowed down alot from falling but still falls a bit…I got a multivitamin from gnc we will see..?✨Jesus name we get our hair back..Im going to pray for us all tonight ?thats the best thing i can do ..amen.. Im 33yrs old btw..God bless u all?

    • God bless you Ericaa did your hair grow back?

  9. I also took phetermine for 6 months and lost a lot of weight. Then noticed a bald spot. Then 3. I went to doctors and ran blood tests. No auto immune desease or anything else. Then I looked up phertermine and hairloss. What I saw scared me. I stopped right away and did research. I started taking D3 5000 IU, probiotic, silica and Vitamin B. Along with it I bought a blender ( vitamix) which was crazy expensive but there is no other way I would get all the nutrients without eating. I blended all kinda of berries, pumpkin seeds, flax seeds etc. with greens. I started seeing my bald spots re growing fast. I also used coconut oil, castor oil, rosemary oil once a week. My hair is finally growing back and looks healtheir in 6 months of this routine. Will continue to do so . Hope this infomation helps!!

    • Thanks for sharing Sonali!! These are some great tips 🙂

  10. I took phentermine for 2.5 months and lost 20 some pounds but after two months started noticing hair fall crazy i used be thick hair guy and within few months i got hair thinning problem and started noticing my receding hair line.
    Taking 5000mg biotin everyday for 10 days and cocunut oil now but haven’t seen any big difference.
    Did anyone able grow back they hair again??
    Any suggestions?

  11. It started with my visit to the weight loss clinic. My appetite was completely gone and o lost 13 lbs in less then two weeks. First my scalp started to feel crackled, next the front of head my hairs felt hollow and started to break off at the tips. Oil did not penetrate my scalp and the texture of my hair was something I couldn’t explain. My hairline has continued to resceed, I have stopped taking the Phentrimamine. Now I’m on my hair journey.

  12. I am almost bald from taking this drug! Never again! My hair started falling out in large clumps after three months of taking it! Been off of the drug for six months & still losing my hair. I am convinced I will be bald.

  13. Does anyone have a comment about their hair coming back? Did anyone\’s hair ever return?

  14. I Started Duromine (Phentermine) back in Late October 2014 and stopped around January 2015. I lost 30KG in the first 30 days of use, it was great but I started to rapidly lose hair, and Because my hair is naturally thin, It was pretty obvious to the naked eye. Fast forward 3 years later, Unfortunately My hair still hasn\’t fully recovered from the side effects of this drug. I still have patches of hair missing from my scalp and it is very frustrating. What bothers me is that hair loss is not even listed as potential side effect when these pharmaceutical companies know that it infact is a major side effect, along with potential Heart Problems, Kidney Problems etc etc.

    These companies should take responsibility on what they put out and how it effects their customers.

    If you are reading this, I hope you will realise that in life there is no such thing as a Miracle pill, and there is certainly no short cuts when it comes to weight loss.
    Truth is, \”You are what you eat\”. Obesity doesn\’t happen over night, it\’s from a combination of bad lifestyle choices and a unhealthy relationship with food.

    The amount of time u used to lose the weight, is the same amount of time u can potentially gain it back. I personally went from 158KGs to 121KGS in a span of 3 months, but gained it back near instantly after going off this drug. On a side note, u may think that this drug might make u shed weight over a short period of time, however when it comes to the bigger picture, U can\’t rely on this drug forever, and soon after your body is use to the drug and it isn\’t as effective as before u only really have two options: 1. EIther u up the dosage and harm your body even more. or 2. Get off and gain the weight back.

    After falling into a year of depression and gaining all the weight back and more, I decided to pick my self back up again, joining a Gym, Hiring a trainer, and choosing better and healthier food options. My life and my Weight has improved so much and I\’m a much more active person today. I went from 162KG to 140Kg in two months of consistent effort. We should learn to be more pro-active and take control of our own lives and not to just rely on some pill that will leave you with life threatening side effects. (You\’d be surprised to find that some countries have banned this drug simply because of how dangerous it is.) The side effects are just not worth it.

    I\’m not here to fat shame, nor say I\’m better than anyone, but what I want to say is, There are alot of options out there in regards to weight loss and it doesn\’t have to be through a drug, nor does your body deserve to go through this kind of treatment just to better your lives. Please re-consider before buying this pill and ask yourself: Are the side effects really worth it?

    Good luck!

  15. Wow! I’ve been experiencing a lot of hair loss this month, I’m in my 3rd month on phentermine. I’ve taken it before and not noticed it as much as this time around. I’m a hairdresser and immediately started myself on biotin and upping my B Complex vitamins. I’ve had to resort to topical hair treatments as well. Has anyone tried Nioxin products as I know for a fact that it’s helped my clients with dormant folicals and regenerating hair growth. From a professional side I’d recommend this to anyone experiencing hair loss. Let me know if it works for you. ?

  16. don\’t bother with all the Biotin and vitamins I\’ve tried it all and nothing works. I\’ve taken this drug for 1 and a half yrs and just realized it was this that was making me bald. I thought it was bad genes, thyroid. high blood pressure. I have a glucose test Friday but just now it comes to me after reading all of this. I hope it comes back I will be so pissed.

  17. I am 21 years old and started Phentermine in August. I was 210 pounds. My hair slowly began falling out from the root (not thinning). At first, it wasn\’t a lot so I was not concerned; however, it eventually began falling out A LOT. It became noticeable to others that my hair looked different this October but I continued taking the phentermine.

    By November (last month), I realized that I would eventually go bald if I continued taking the phentermine. I asked my weight loss doctor for a different medication. He prescribed me diethylpropion. I have been off the phentermine for over a month but my hair is STILL falling out. My hair line has receded a bit and if I pull my hair up (in a pony tail, for example), there are noticeable bald spots. I am truly in distress over it so I am considering buying a wig (not over exaggerating).

    I have tried everything to stop the hair loss- I take a biotin supplement, a hair/nails/skin supplement, and a multivitamin. I also use a biotin/hair loss shampoo and conditioner. I have also tried using castor oil a few times. None of this was successful in stopping the hair loss.

    I just started receiving a \”beauty blend\” injection which contains Glutathione & Vitamin C. My doctor said that this mixture helps to strengthen hair. I have only had one injection so far (the treatment is a series of six injections). I am praying that it helps to lessen the hair loss even by a bit.

    On the bright side, I weigh 183 pounds now.

    Conclusion- these medications will help you lose weight but may also cause other side effects, such as hair loss, for some people. This hair loss may not happen to everyone but if you love your hair, I would not risk it.

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