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Phentermine Brands: All You Need To Know About Adipex

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Check out the ultimate guide to phentermine weight loss pills!

When it comes to phentermine brands, Adipex  is probably the most commonly known. But what exactly is Adipex and how is it different to phentermine as a generic weight loss medication, and to other phentermine brands such as Suprenza  and Duromine? Here we explain all you need to know about Adipex so that you are informed and up to date about this medication, its effects, and the results you can expect from your Adipex prescription.

What Is Adipex?

Adipex, officially known as Adipex-P, is a brand of the generic weight loss medication phentermine. Adipex is made by GATE Pharmaceuticals – now part of Teva Pharmaceuticals, the world leader in generic drugs – who have been marketing the diet pill since 1990. Like generic phentermine and other phentermine brands and combinations, Adipex is an effective weight loss medication which works by suppressing appetite and boosting energy levels, increasing the likeliness of weight loss by encouraging you to eat a healthier diet, and to incorporate more activity  into your daily routine.

How Is Adipex Prescribed?

Before prescribing Adipex, your doctor will perform a full health check and discuss any precautions with you to make sure that Adipex is suitable in your individual case. As with all brands of phentermine, Adipex is prescribed for the short-term treatment of obesity, and is usually prescribed for a period of 12 weeks, after which time it is recommended that you take a break in order to avoid potential Adipex addiction and the subsequent withdrawal symptoms that follow. You may be prescribed Adipex for a further 12 weeks, but this depends on your individual case and the recommendation of your doctor.

Adipex is available as both tablets and capsules; you can see images of Adipex tablets and capsules here. Adipex tablets come in the form of white tablets with blue speckles, and it is thought that manufacturers such as Actavis Pharmaceuticals and Qualitest Pharmaceuticals copied this widely recognized design for their phentermine tablets to maximize their selling potential, as people often incorrectly believe that the blue speckles are the active phentermine ingredient. Like all phentermine tablets, Adipex tablets are only available as a dosage  of 37.5 mg but some doctors will prescribe half an Adipex tablet per day if they feel that a dosage of 18.75 mg is more appropriate for the patient.

Adipex capsules are half blue and half white with black stripes, and unlike other phentermine capsules are only available as a dosage of 37.5 mg. These cannot be split in two so these are only suitable for patients who require the maximum dosage of 37.5 mg. Your dosage will be prescribed by your doctor according to your specific needs and requirements, therefore it should not be taken in larger or smaller amounts, or for longer than recommended as this could cause harmful and potentially dangerous side effects.

What Results Can I Expect From Adipex?

As with other weight loss medications and brands of phentermine, your Adipex results and how much weight you lose will depend on how you approach your weight loss journey; Adipex is not a miracle pill, but rather a kick start to help you begin your healthy-eating and exercise routine. Before starting your weight loss journey with Adipex you should set goals to challenge yourself and to keep yourself motivated as you pass through the Adipex weight loss stages. It is important to eat healthier and to find an exercise that you love in order to boost Adipex and its effectiveness, and to ensure long-term weight loss success with Adipex. In addition, this weight loss schedule includes some great ideas on how to ensure that your metabolism  is running smoothly throughout the day. Support from friends and family is extremely important to your Adipex results, and for additional support, we recommend that you join our Facebook support group to share your experiences and ask questions, and where you will also find a specific section dedicated to Adipex results. As with phentermine, it is not uncommon for those taking Adipex to require additional prescriptions to reach their goal weight, but this advice on how to approach your weight loss journey with Adipex if it’s your second, third, or fourth time around, will help you to make sure you get the Adipex results you want to achieve.




What Are The Side Effects of Adipex?

Adipex side effects, like phentermine side effects, will vary depending on the individual but may include the physical symptoms of nausea, headaches, dizziness, constipation and dry mouth. Dry mouth is the most commonly experienced side effect, as reported by over 73% of our users in a recent poll and can be very uncomfortable and painful. As a solution to this symptom, we recommend that you try the saliva-boosting Phen Drink, specially designed for those taking phentermine and Adipex to stop the dry mouth side effect while also boosting metabolism and suppressing appetite. The amphetamine-like structure of phentermine as the active ingredient of Adipex can also cause a range of emotional and psychological side effects, including anxiety, mood swings and depression, causing many people to feel worse despite trying to lead a better, healthier lifestyle.  To boost your health and well being while taking Adipex, we recommend that you add the multivitamins Phen Vites to your daily routine for all the nutrients you need to keep your body working at its optimum level. These weight-loss-boosting multivitamins contain vitamins A, C and E, folate and B12, which are all crucial nutrients for weight loss to ensure you get the best Adipex results, as well as the serotonin booster 5-HTP, which regulates sleeping patterns and mood, and also helps to suppress appetite, to give your Adipex prescription a boost.

What Is The Difference Between Adipex And Phentermine?

Most of the information you will find online about Adipex will refer to phentermine and Adipex interchangeably, which is because Adipex and phentermine are essentially the same product. Adipex is one of many brands of phentermine, but unlike other phentermine brands, Adipex does not differ from generic phentermine in terms of ingredients or the form in which it is prescribed. For example, Duromine, which is a phentermine brand prescribed in Australia, New Zealand and South Africa, includes a time-release resin and is available in doses of up to 40 mg, and Suprenza, another phentermine brand, comes in the form of an orally disintegrating tablet. By comparison, Adipex and generic phentermine both contain phentermine as the active ingredient and other inactive ingredients such as corn starch and colorant to produce a pill that can be easily taken and ingested by a person and are both available in pill and capsule form up to a maximum dosage of 37.5 mg.

The key difference between generic phentermine and Adipex is the name; as a brand, Adipex has the advantage of being protected from being misused by producers of imitation phentermine, so many people feel that they can trust Adipex. However, with both phentermine and Adipex, it is not possible to buy either online as they are both prescription-only medications. If you do not have a prescription for either then we recommend the phentermine alternative Phen Caps, which do not contain phentermine, but which work to help you lose weight by suppressing appetite and boosting energy levels with their combination of active ingredients. Another difference between phentermine and Adipex is that Adipex is produced by just one manufacturer, therefore those taking Adipex may feel that they can expect more consistent results; since phentermine is made by different manufacturers, many of our support group members have discussed how they are doubtful about the changing quality of their phentermine prescription, and many support group members have posted comparing the effectiveness of different phentermine manufacturers. However, it is important to note that Adipex is often more expensive than generic phentermine. There are also many conversations in our support group which include discussions about the effectiveness of phentermine compared to Adipex. However, many people react differently to different medications, therefore Adipex and phentermine results can be based on individual differences between people just as much as it can be because of the differences between manufacturers and brands. What is undoubtedly true, however, is that Adipex is the phentermine brand that everyone is talking about.


So, have you tried Adipex? What do you think of this phentermine brand and what results did you see?  Let us know all about your experiences with Adipex by commenting below!

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16 Responses

  1. I\’ve used phentermine off & on for many years. Always had good results with weight loss but this time I have a bad itchy burning rash on my arms. Not using or taking anything different than years before, no different soaps or lotions. Just wondered if a different brand might be causing my rash? It\’s really miserable with no relief. Benadryl doesn\’t work, calamine or caladryl, hydrocortisone, Benadryl creams, nothing is working. Now I\’m itching all over but only have rash on my arms. Worse than poison ivy. Never had any side affects until now. Going to stop for few days & see if it gets better then will know for sure if its the pills. Sucks if it is, always worked well for me but can\’t stand the itching!

    • Hey Boogie, a rash is one of the less common side effects of phentermine, as listed here: It is quite likely that it’s the brand or manufacturer that’s affecting you this way, although sensitivities, allergies and reactions can come and go over the years as our body changes so it might just be as a result of these natural changes. Either way, we would recommend that you consult your doctor who will probably advise you to stop taking phentermine for the time being and may give you a different brand to see if this works better for you.

    • What color was your capsule? Does it gave a name and/or number imprinted on it?

  2. I am currently on phentermine and its not working. I told my doctor and he cant give a direct answer. I was wondering what product that I may take to help the effects of phetermine 37.5

    • Hi Crystal,
      The supplement 5-HTP has been found to boost the effects of phentermine: In addition, some doctors prescribe supplements such as chromium and B12 to boost the effects of phentermine. All of these ingredients – 5-HTP, B12, and chromium are found in the weight loss multivitamin Phen Vites, which you can find out more about here: Taking a break from phentermine can help to boost the effects, as can trying different brands (e.g. Adipex) or formats of phentermine (i.e. capsules as opposed to pills or vice versa) to see which ones work best for you. Lastly, we recommend the supplement Phen Caps, which can be taken alongside phentermine to help boost the effects of appetite suppression and energy –
      Hope that helps!

  3. My doctor has been prescribing me Phentermine for 13+ years straight with never a break unless I couldn’t afford them one month. He said is was for maintenance. I had know idea how very few WEEKS this should be taken, let alone YEARS with no more than 90 lbs weight loss total over all them years. Why would he do this to me!? I recently (last month) quit them and will never ever take again! I wonder the harm this could have on me now long term? Is this even legal?

    • Hi TaRyn,
      I’m glad to hear that you’ve stopped taking them, and I hope you haven’t experienced any side effects or withdrawal symptoms from stopping them. While it’s surprising that your doctor would prescribe them to you for so long, you’re not the first person to tell us that your doctor has done this. So, it probably isn’t illegal, although different states do have different laws so some doctors are more restricted about prescribing it than others. To put your mind at rest, the main reason that phentermine is recommended for short periods of time is that it was only ever tested in lab trials for 12 weeks. If the tests had been done for longer then we might know that taking phentermine long term isn’t dangerous for the majority of people. But, the fact that we don’t know due to the lack of testing means that doctors should always err on the side of caution and prescribe phentermine for short periods only.

  4. I am experiencing HORRENDOUS side effects!! The extremely high levels of anxiety and fear are out of this world bad, chest pains hurt badly, the brain zaps are killer, but mostly the mood swings are I cant even begin to explain…. lets just say it’s a good thing I have such a patient and understanding family. I get so mean sometimes, which is completely not my style! I get severe panic attacks several times a day lately. I have never experienced such horrible and strong side effects from a med in my entire life! I wish this wasn’t happening to me. I wish there was more studies done so I could know what to expect. I wish my doctor would pay for my suffering the last few months too.

  5. I didn’t figure I’d get a response back 🙁

    • I think u are having horrible side effects because u just stop taking them abruptly you have to wean yourself off them. My doctor told me how to do this by cutting the pills in smaller portion and talking it in small pieces everday for a week or more. He called it the withdrawal symptom

  6. Has anyone had issues with the pill not working.
    The doctor told me to shop the pharmacies and find out who has the most successful manufacture of this medication and have my prescription filled there I had my prescription initially filled at Publix pharmacy which is a grocery store wondering if anybody has had luck with another retailer or a manufacture I should be looking for thank you so much for your help I really appreciate you taking the time to help me

    • Hello Stephanie. Thank you for reaching out.

      Phentermine is known to be an extremely effective weight loss medication. However, for those taking phentermine, the effects and results can vary throughout their prescription, and many of our support group members report that they feel their phentermine has stopped working, sometimes just a week or two after first starting to take it. Here we examine how phentermine works, what can cause a reduction in its effects, and how to overcome these issues in order to achieve great phentermine results:

      We also recommend adding the weight loss supplement Phen Caps to boost the effectiveness of your phentermine prescription by offering additional appetite suppression and an extra energy boost. This leading phentermine alternative uses a combination of different active ingredients to provide your body with a different source for these effects when your body becomes accustomed to phentermine. It is important to always follow the instructions of your doctor, so if you find that your phentermine prescription does not produce the same effects, you should not increase your dosage in an attempt to manage your increase in tolerance. Doing this will only lead to a greater dependency and therefore a greater chance of withdrawal symptoms, including weight gain, once your prescription ends.

      You can find out more about Phen Caps right here:

      Hope that helps! Also, you are welcome to join our brand new support group so you can connect with other phentermine users, share your experience and get some valuable advice.


  7. Hello I being taking phentermine for 2 months and I had great results lost 37lbs, I stop taking them because I was having a rapid heartbeat, my doctor prescribe me one more month, is it normal to have a rapid heartbeat, and dizziness? I bean reading a lot about this medication but some people say its not dangerous to have a rapid heartbeat and some say is bad.

    • Hi Pink. Yes – rapid heart rate and dizziness are common side effects of phentermine, but they can still be dangerous. If these reactions are still bothering you, getting worse, or interfering with your daily activities then you should speak with your doctor ASAP. It’s especially important that you consult with a medical professional given that you’ve already been taken off the medication once for rapid heartbeat. Best wishes!

  8. I have taken Adipex for many years. It works very well for me. However, recently there has been a shortage of the name brand Adipex. They keep saying it is on back order. Can you tell me what is causing this? Are they going to stop making Adipex and force patients into generic? I have tried the generic and it did not work for me. Every article on generic says they must have the same active ingredient. It does not say that they must have the same strength or amount of active ingredient. If I use the Adipex generic, will it be exactly the same strength as the name brand?

    • Hi Lynn 🙂 Yes, given that both pills are the same dose, generic preparations of phentermine have the same amount of active ingredient as brand name preparations, meaning they should also be the same strength. For example, Adipex contains 37.5mg of phentermine HCL, so a generic pill that also contains 37.5 phentermine HCL (the same dose) should function similarly. You can read more about Adipex vs. generic phentermine 37.5 here:

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