Who Uses Weight Loss Vitamins With Phentermine?

General Phentermine Questions?
Check out the ultimate guide to phentermine weight loss pills!

The side effects of phentermine, like lack of sleep and low mood, as well as pushing yourself to exercise, can all take their toll on your body. However, when you’re eating a calorie-controlled diet, despite your best intentions to eat healthily, it can be difficult to ensure you’re getting adequate amounts of essential nutrients to make sure your body is up to the challenge.  Adding weight loss vitamins to your phentermine prescription can give you the boost you need to feel better and overcome some of the side effects of phentermine, as well helping you to achieve better results as you progress along your weight loss journey. But, who can benefit from this winning combination the most? Let’s find out…

1. People who… Have Low Energy

Although phentermine is a stimulant, not everyone experiences the same energy boost, and others may even experience paradoxical reactions, as explained here, where phentermine causes them to feel more tired than usual. Coupled with the potential side effect of insomnia, this can mean seriously low energy levels and difficulty in starting an exercise routine. A calorie-controlled diet lacking in essential vitamins and minerals can add to this issue, so this is where a multivitamin aimed at those losing weight can help to solve these problems. Often prescribed alongside phentermine, the serotonin precursor 5-HTP is an essential ingredient of weight loss vitamins as it helps to regulate sleep cycles and lift mood. Coupled with the energy-boosting properties of vitamin B12 and supported with vitamins A, C and E, plus magnesium to regulate the way the body uses food to fuel the body’s energy supplies, the right weight loss vitamins will get you back to feeling energized and motivated to continue on your weight loss journey.

2. People who… Want to lose weight faster with phentermine

Not only do good weight loss vitamins restore your energy levels and help you to be healthier, they also helps to increase your weight loss potential. Many nutrients are lacking in the typical American diet, and even if you try to introduce more nuts, grains, fruit and vegetables into your diet, it can be difficult to ensure that you tick all the boxes for your recommended daily allowances while also sticking to a calorie limit. However, ironically, lacking in these crucial vitamins can slow your best efforts to lose weight, and can be the reason that many people struggle to lose despite eating healthily and exercising. The right weight loss vitamins provide all the nutrients you need to boost weight loss with phentermine, including B12, which helps to metabolize fat and protein more efficiently, the natural appetite-suppressant 5-HTP, and magnesium, which helps to stop cravings and hunger by regulating glucose and keeping blood sugar levels steady.

3. People who…Want to build lean muscle

Losing weight isn’t just about eating less and burning calories, it’s important to build lean muscle with exercise too as this is the key to maintaining weight loss in the long term. By building lean muscle, you are increasing the fat-burning potential of your body as lean muscle burns calories even when you’re not active, so it means your goals are easier to maintain once you reach them. However, building lean muscle requires more than just weight-bearing exercise; you also need to incorporate more protein in your diet plus the nutrients which help to convert protein into muscle, namely chromium, vitamin B12, and N-Acetyl Cysteine (NAC), which are all essential ingredients in any great multivitamin designed to help you lose weight and keep it off in the long term.


4. People who…Have reached long-term weight loss

Phentermine is only ever prescribed for a limited period of time as it is designed for the short-term management of obesity and can be harmful if taken for too long. So, while phentermine provides an excellent kick-start to your weight loss journey, you need to be sure that you can maintain your new lifestyle and therefore continue to strive towards your goals  or maintain those you have reached, and therefore avoid having to take phentermine for a second time. To ensure that you don’t undo all of your good work once your prescription finishes, taking weight loss vitamins alongside phentermine and then after your prescription will ensure that your body is working efficiently to maintain weight loss. Weight loss vitamins will also help you to avoid withdrawal symptoms like low mood, insomnia and weight gain, with the help of essential nutrients such as fat-busting vitamin C, energy-boosting vitamin B12, and 5-HTP, known to be a natural appetite suppressant, mood booster and sleep regulator. Adding a weight loss supplement after your phentermine prescription finishes is also a great idea as you will benefit from continued appetite suppression and an energy boost, but without the need for a prescription and without any possibility of side effects.

5. People who…Want to feel their HAPPIEST!

A weight loss journey can be a real roller-coaster of emotions; one day you’re motivated and energized, the next day it feels like your goal is a million miles away and you’re ready to give up. Phentermine can add to these mood swings, as reported by many people on our Facebook support group, and coupled with side effects such as insomnia, losing weight with phentermine can leave you feeling less than your best. Exercise is a great mood lifter, plus it increases energy levels and helps you sleep better, but the added boost of weight loss vitamins will give you the help you need to stay on top of your game. Selenium is well known for its mood-boosting properties, and 5-HTP helps to lift your mood and regulate sleep, and are both key ingredients of good weight loss vitamins, leading to fewer cravings and a happier you!

So, do any of these describe YOU? If so, you could benefit from the added health boost of weight loss vitamins designed specifically to help you while you’re losing weight, maintaining your goal weight, or just to help make sure that your body is working at its best and you’re getting all the nutrients you need to lead a healthy lifestyle. Let us know what you think by commenting below.


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31 Responses

  1. I have been taking phentermine . I have lost 50 # and can’t seem to lose anymore. I went off for a couple months still maintaining what I did lose . What I noticed again while being on this I am always cold. My feet and hands are like ice. Is this a side affect ?

    • Hey Mary, thanks for your message! Well done for losing 50lbs, that is a great achievement! And also well done for maintaining – many say that’s the hardest part!

      Phentermine side effects can vary a lot, although we haven’t heard of having cold hands and feet as a side effect – it may be a less common one, or perhaps a sign of something else. It could be worth having a check up with your doctor for blood levels and others things like iron levels, as if these systems aren’t working properly they can slow weight loss.

      Good luck!
      Sally, phentermine.com

  2. Hi I have been on Phentermine since end of March this year and my Phentermine script will finish in December. As of this date, I have lost about 50# Starting weight 230 # current weight 180#. For the past I have notice that I have not want to want Phentermine every morning. There are some days I just don’t take it. Now I only take it during the week not on weekends. Maybe I am wrong, but I think that my body really doesn’t want to take it anymore now that my body is so use it. I take a lot of vitamins since I have been taking Phentermine. I take Calcium, Vitamin D, B12 (5000 mg), Balance energy 100, Super B Complex, multivitamin and collagen. If I had not have been taking these vitamin supplements, I probably would not have been successful. Also, I always exercise almost everyday, 30 minutes on stationary bike and about 20 minutes on my total gym machine.

    • Well done on your weight loss and thanks for your feedback bbwchick! It definitely could be possible that your body has ‘had enough phentermine’, as it’s true that once we start really listening to what our bodies need, we realize that it is often telling us exactly what it needs to be healthy, we just sometimes have trouble understanding it! We also agree that vitamins are essential for successful weight loss, which is why we recommend Phen Vites, the new weight loss multivitamin by phen.com – https://www.phen.com/phenvites?utm_source=phentermine-blog&utm_medium=reply&utm_campaign=phenvites-page

      Have a great day!
      Sally, phentermine.com

      • Hi, Could I take phenvites along with my prescription Phentermine? I may consider ordering Phen Caps at the end of the year once my scrip of Phentermine runs out. Is it safe to take Phen caps and phenvites together as well ? Please advise. Thanks

        • Hi bbwchick! Yes absolutely, Phen Vites and Phen Caps work great individually but even better together – in fact, Phen Vites contain the ingredient L-Tyrosine which improves the effectiveness of appetite-suppressing supplements like Phen Caps. Phen Vites are also perfect alongside phentermine – they were designed especially for those taking phentermine as they reduce side effects, improve mood and boost health while also boosting weight loss potential by replenishing the nutrients that are essential for weight loss and good health.

          Hope that helps! Have a great day,

  3. Is it safe to take Phenvites along with my other vitamin supplements as well? Thanks

    • Hey bbwchick! Yes it’s safe to combine vitamins, although with Phen Vites it’s unlikely that you’d need to take any other vitamin supplements as they contain everything you need to keep you healthy and help you to lose weight.
      Have a great day!
      Sally, phentermine.com

      • HI Sally,
        I just got back from my doctor appointment and I asked him if he could write me a new prescription for Phentermine since I am running low. I told him I now weigh approximately 180-183 lbs. When I started in March 26 2014 I weighed about 230 lbs. Heven says that he will not write me a new prescription because it is not a good idea to be on it a long time. I told him that I had hit a plateau and he said that is not good. I HAVE DOWN EVERYTHING RIGHT and exercised every day and eat right. He says I need to do weight training. I told him I have a bike and a total gym machine. He says I need to change my exercise. He says for me to come back for my physical in march and he will determine if I need to go back on phentermine. Now I feel so frustrated. I wanted to be about 160 lbs. by eND of the year but not going to happen. I have sleep apnea and I am over 40 which can slow my weight less. Is it possible that I can start taking penitentiary and phenomenon caps? I really don’t know what myou doctor is talking about I do a lot of exercising.

        • Hi bbwchick,
          Although your doctor’s advice doesn’t sound very clear, and saying that a plateau isn’t good really is not helpful, switching up your exercise routine to break a plateau is a good idea, and with exercising often people mistakenly think that it’s all about how much, but really quality is more important than quantity. Doing high intensity interval training for as little as 20 minutes a day can be great to shake up your metabolism, and lifting light weights or trying weight-bearing exercises like Pilates or yoga are also great for losing weight around the core and toning up. If you’re not a fan of these new exercises, once you start losing again you can always return to the exercise you enjoy and that you find most convenient as this is what is most important for establishing a healthy exercise routine for the long term. While it is obviously disappointing for you not be able to take phentermine for the next 3-4 months, taking a break from phentermine is crucial, as we explain here: https://www.phentermine.com/blog/need-take-break-phentermine/ and this second article has lots of great advice about how to handle your break – https://www.phentermine.com/blog/handle-break-phentermine/. While your goal of 160 lbs by the end of the year will be more difficult to achieve, this break is an opportunity for you to see what life is like without phentermine, as it is not a medication which can be taken long-term. Also, I think it’s really important that you take a step back and think about how far you’ve come, rather than focusing on what you still have to achieve – you’ve lost 50 lbs since the end of March which is a really great achievement! Lastly, we would recommend that you take Phen Caps during your break, especially as they contain different ingredients to phentermine, so while the phentermine is probably much less effective than at the start, the energy boost and appetite suppression of Phen Caps should get your losses moving again. Good luck!


  4. I have increased my resistance level on my total gym machine. Would this count as a high intensity training. I don’t know if you are family with total gym machine; it is advertised by actor Chuck Norris and model Christie Brinkley. Since I have increased the resistance level higher . I can now feel the resistance when I do most of my exercises. I guess this means it is working and the intensity has gotten higher?

    • Hey bbwchick, I’m not familiar with the machine but it definitely does sound like higher intensity. But, to make it easier for yourself and to benefit more, you should switch between high and low intensity, therefore on the low intensity you’re going faster and using your heart and lungs more, and on the higher intensities you’re using your muscles more. This way you’ll get more benefits and you’ll be able to go for longer. Good luck!

      Sally, phentermine.com

  5. I will be starting phen 37.5 soon but I’m afraid of the reviews I been reading is there anything I can do to prevent the jitters mood swings etc..???? I heard HTP 5 was good but what about a multivitamin??

    • Hi Stephanie,
      We recommend following your doctor’s advice, but often the full 37.5mg dosage can be very strong for patients in the first few days. If you experience the side effects that you’re talking about, such as mood swings, jitters and insomnia to uncomfortable levels then it can be helpful to take half a pill instead of a whole one until your body gets more used to the effects. This should take a few days and then it’s likely that a whole pill will not affect you so strongly. Another way to lessen the side effects of phentermine is to combine phentermine with a multivitamin such as Phen Vites. Phen Vites help to reduce the side effects such as insomnia and mood swings, plus they boost your health and weight loss potential through the vitamins and minerals they contain. 5-HTP is effective at controlling appetite, mood and sleep patterns, which is why it is included in Phen Vites – multivitamins don’t usually contain 5-HTP, and 5-HTP alone is less effective than an all-comprising multivitamin like Phen Vites, so this is why we specifically recommend Phen Vites.
      Hope that helps!
      Sally, phentermine.com

  6. hi, i started taking phentermine 37.5 along with 5 other vitamins prescribed by my dr, im curious to know if i need to if i need to take the other vitamins or if i can just take the phentermine alone & still loose weight, so far i have lost 14lbs in 1 month, please advise thank u

    • Hi Suggah,
      Although phentermine helps you to lose weight, vitamins can certainly help to promote weight loss with phentermine, and will also make your body healthier, meaning it works better and weight loss is more likely. Vitamins can also help to reduce the side effects of phentermine so that you feel better while you’re losing weight. This is why we recommend Phen Vites alongside phentermine as they contain B vitamin complex, 5-HTP, chromium, and magnesium – all of which promote weight loss and a healthier body. You can find out here how Phen Vites help you to lose weight: https://www.phen.com/how-to-lose-weight-phen-blog/how-do-phen-vites-help-me-lose-weight

      Sally, phentermine.com

  7. Can I take phen with my multi-vitamins or should I wait an hour and take them separately?

    • Hi DD,
      Phentermine works best first thing in the morning and generally, so do multivitamins. We would advise you to take phentermine before eating and then the multivitamins with your breakfast.
      Hope that helps!
      Sally, phentermine.com

  8. Hi

    I have been taking Phentermine for a month and a half now my doctor started me at 15 mg. first month. I\’am now on my second month of taking Phentermine and she increased my dosage to 30 mg. I feel it is not working as well as it did first month and I have a history of mild depression. I saw a phsychologist today for the first time in my life he prescribed lexapro to me well like any other drug I did my research and do NOT not want to take this drug there is an overwhelming amount of people that have taken Lexapro that have said it has not helped but has made there depression worse and very hard to ween off of, I have taken 5HTP in the past for depression and actually worked so I have decided to take 5HTP again but wanted to know if I could use phentermine with 5HTP so did my research again, and what do you know these two actually go hand in hand I read that phentermine a second period taking phentermine is not as effective as the first. It is thought that phentermine starts to become less effective as it causes a depletion of neurotransmitters in the brain, as phentermine works by moving neurotransmitters from one place to another, but does nothing to increase the supply of neurotransmitters in the nervous system. Because of this, your brain slows down the production of neurotransmitters

    One such way to overcome this problem is thought to be by using 5-HTP, which, as a naturally-occurring hormone pre-cursor, imitates the body’s own system of regulating appetite, sleep patterns and other important functions, therefore making up for the negative effects phentermine has on the body. Neurotransmitter functioning can also be improved with sufficient levels of amino acids, therefore it has also been proposed that multivitamins which supply sufficient levels of several important B-vitamins can reverse the depletion of neurotransmitters as a result of taking phentermine. This is because B vitamins are co-factors for the production of neurotransmitters from amino acids.

    All of this information I found on your website which has been very eye opening for me and why I have drifted back into mild depression….I want to start taking Phen Vites because it makes sense to take this with Phentermine can I take 5HTP Phentermine and Phen Vites all together what would you recommend? I have lost 20 lbs. so far being on Phentermine but my mood has been very low depressive and as I said I do not want to take Lexapro side effects are severe I have I feel mild depression and 5HTP has worked for me in the past.

    • Hi Olivia,
      We’re glad that you found our articles so helpful! If you intend to take Phen Vites alongside phentermine then a 5-HTP supplement would not be necessary as well since Phen Vites contain 5-HTP. We believe Phen Vites to be a great addition to your phentermine prescription as they provide supplements to directly help with the vitamins and minerals that you can lack when dieting, as well as nutrients that help to reduce the side effects of phentermine, such as B-vitamins and 5-HTP for low mood, biotin, vitamin E and A for hair loss, and 5-HTP to aid sleep as a way to combat insomnia.
      Good luck with your continuing weight loss journey!
      Sally, phentermine.com

  9. Hi
    So I currently am taking phentermine and I’ve been reading all about taking them with vitamins, I’ve been looking for the phen vites but can’t seem to find them anywhere. Are they discontinued? If so what vitamins should I be taking?

    • Hi!
      Yes, unfortunately Phen Vites were discontinued last year. In place of them we would recommend a good multivitamin that has most of the standard vitamins and minerals you would need, and then for extra supplements, many people find 5-HTP to give a boost to phentermine as well as helping with side effects, and you might want to try biotin if hair loss is a worry for you, and maybe iron supplements for energy.
      Sally, phentermine.com

  10. Hi i took phenadrine today for the first time and I don’t feel well. I don’t know if this is just because I mixed it with the vitamins ( A, C and D ) ? I m shaking as hell!

    • Hi Viola!

      Did you mean phentermine? If you are experiencing strong or jittery reactions like that, it’s probably a good idea to visit your doctor. However, having shakiness after your first phentermine pills is not uncommon.



  11. Is it safe to take the Phentermine with an opti women vitamin supplement

    • Hi Rosa! We always recommend consulting with your prescribing doctor and pharmacist before combining phentermine with any additional vitamins or supplements.
      Rachel, phentermine.com

  12. I started on phentermine 37.5 on april18,2018 and as of today have lost 40 lbs. per my doctor on the 18th of this month he will not repressive the phentermine for at least a few months. So I was wondering if I could start taking cellucur super hd now along with the phentermine so that once I am off the phentermine I won’t lose my motivation? What is your recommendation?
    I just can’t ever go back to my other weight and I feel like I really need to lose another 15-20 lbs to make me look my healthiest.

    • Hi Caroline! We’d recommend checking with your doctor and pharmacist about taking a supplement in combination with (or after) phentermine. They will definitely understand your interest in keeping the weight off, and they’re best able to assess what products are advisable for you to combine with your other meds/medical conditions. Best wishes!
      Rachel, phentermine.com

  13. Hi!
    I just started taking phentermine on Wednesday (today will be my fourth day of taking it). I still feel really hungry even though I have been eating a lot of food. I have not been able to meet my daily calorie goal (1,200 -recommended by my doctor-) because of my large appetite. How long does it take phentermine to start working? I am worried that the phentermine will never work. I see my doctor in two weeks, but I am hoping to get some insight before then.

    Thank you!

    • Hi Lina! Phentermine usually works relatively quickly. If you feel like it’s still not controlling your appetite at all, I would suggest giving your doctor a call before the 2 week appointment. He or she may have some suggestions about how to adjust your dose or schedule to help the medication work better. Best of luck!
      Rachel, phentermine.com

  14. Hello,
    I have been on Phentermine for about 6 months and have only lost about 20 lbs. I’m not very hungry so I eat little and so a lot of walking. Is there anything I can do to assist the Phentermine?

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