The majority of the diet pills and weight loss aids that we review on Diet Pills Watchdog are supplements that are available without prescriptions, which fall outside the jurisdiction of the FDA. This is because the entire market is unregulated, making it an ideal place for scammers to thrive; we aim to expose these scam artists, along with unsafe products, and help you to make informed decisions about the best supplements for you. Prescription medications can only be prescribed by your doctor, but it is still important to be aware of the pros and cons of any weight-loss aid and make sure the product is the right one for you.

Below, we take an in-depth look at Duromine – a prescription-only branded weight-loss medication – to see how safe and effective it is.

Duromine Pros

  • Effective to reduce appetite
  • Available under prescription

Duromine Cons

  • Many rip-off websites leading to other products
  • Many potential side effects
  • Lose its effectiveness with time
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What You Need To Know About Duromine

Duromine is a branded form of phentermine, a prescription-only appetite suppressant similar to amphetamines. It can only be obtained through your doctor, and is only available to those who are obese and meet the necessary health requirements. Because it is closely related to amphetamines, there is a risk of addiction and the list of potential side effects is lengthy. It is only suitable for short-term use as its effectiveness declines over time.

What Are The Side Effects Of Duromine?

Common side effects of Duromine include dry mouth, insomnia, headaches, stomach upset, dizziness, increased energy, restlessness, hyperactivity, diarrhoea and constipation.

How Much Does Duromine Cost?

Because Duromine is a prescription medication, it is incredibly difficult to get an accurate quote for the monthly cost. The price will vary depending upon whether or not the customer has health insurance – some will cover a large percentage of the cost whilst other companies and policies may not cover the cost at all. In Australia, the typical price seems to average at $100 for a month’s supply. In other countries, the price could vary dramatically.

Our Verdict On Duromine

We are not that keen on phentermine at all, regardless of the brand name used. It is closely related to amphetamines and can be addictive; we found a review by a woman who was addicted to another brand of phentermine and turned to speed once she was no longer being prescribed phentermine. The appetite-suppressing effects also begin to wear off after several months of use as the body starts to build up a tolerance to the drug. Even if a break of several months is taken between courses, the appetite suppression is never as strong as the first few weeks of use. This is not a long-term solution to weight loss and it is not a healthy option either. The product works to suppress appetite but if the user does not make any dietary changes, they will not lose much weight? If the consumer resumes their poor eating practices after they have stopped taking the pill, they will often regain some or even all of the weight they had lost.

There is no money-back guarantee covering Duromine, and it is unlikely that consumers will be able to get any refund at all, even on unused and sealed products. The price may vary as well; this appears to be because health insurance providers all have different policies when it comes to weight-loss medications. Make sure to check the terms and conditions of your health insurance to see whether you are covered or not.

If you feel that Phentermine is the right product for you and you have received a prescription from your doctor, always ensure that you use the prescription to obtain the product legally from a pharmacy rather than trying to find it cheaper online. We have found reports of people trying to purchase phentermine online from China and Mexico as they were unable to get a prescription and being ripped off or scammed, with people receiving ineffective – likely fake – products or people receiving nothing at all despite paying significant amounts of money.

Overall, we do not recommend Duromine to our readers!

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Duromine Review

Duromine is a prescription weight-loss aid that acts as a chemical appetite suppressant. It is a brand name for the drug phentermine, which has a similar chemical structure to amphetamines. As it is a stimulant, it also boosts energy levels significantly.

Duromine is manufactured by iNova Pharmaceuticals who are a part of the Valeant Pharmaceuticals International group of companies. Duromine is available in Australia and numerous other countries. The official iNova website states that “iNova has a broad range of prescription medicines in several therapy areas including pain management, weight management, allergy, dermatology, cardiology and respiratory health”. Contact information for the manufacturers and information about the product can be found on their official website.

Duromine Facts

  • Manufactured by iNova Pharma
  • Only available under prescription
  • Contains an appetite suppressant closely related to amphetamines.

The Mayo Clinic describes phentermine and whom it is intended for as follows:

Like other prescription weight-loss drugs, phentermine is intended to be used as part of an overall weight-loss plan. It is indicated for people who are obese, and who have failed to lose enough weight with diet and exercise alone – not for people who want to lose just a few pounds.

How to Take Duromine

The official Duromine product information leaflet states:

In adults and children over 12 years, the usual dose of Duromine is one capsule every day. However, your doctor will prescribe the right dose for you. Increasing the dose may not necessarily make you lose more weight or make you lose weight faster. However you will most likely experience more side effects. Your doctor will tell you how long you are to take Duromine for.
Take Duromine first thing in the morning, at breakfast time so that it does not keep you awake at night. Taking it at the same time each day will have the best effect. It will also help you remember when to take it. It does not matter if you take this medicine before or after food. Duromine is not recommended for elderly patients or for children younger than twelve years.

We have read many reviews of the product where consumers have regained the weight they lost within the few months after they stopped taking the product. Whilst the product does appear to be very effective when initially taken, it is far from a permanent weight loss solution. We believe that many consumers over-rely upon the product, without changing their own attitude to food in the long-term. Duromine needs to be used in combination with actual lifestyle changes for it to be most effective and for the consumer to keep the weight off once they are no longer taking the product.

Duromine Concerns:

  • Addictive and related to amphetamines.
  • Scam websites claim to sell the product.
  • Long list of potential side effects.

We feel that it is important to stress that Duromine cannot be purchased online! When googling Duromine, there are many websites that are near the top of the search results that appear at first glance to sell Duromine online. However, when looking at the websites closer, it is clear that these are websites that sell other products such as a diet pill called Phen 375, which does not contain phentermine. We have previously reviewed Phen 375 here. For example, one website – – is actually not Australian but Chinese, and is written in second-language English. They claim that “you are able to get competent advice of a pharmacist free of charge”, when ordering from their website. Like many other misleading Duromine-themed websites, when you click the buy now button (having been told repeatedly that you can order Duromine from this website), you are taken to a sale page for Phen 375. Because of the product name, it is easy to believe that Phen 375 is just another phentermine brand but this is just purposefully misleading marketing! Customers who order from websites such as are always going to be disappointed, especially once the product arrives and the label reveals that it shares no common ingredients with Duromine.

Duromine should only ever be obtained with a prescription from your doctor; trying to buy it online can lead to be ripped off by scam websites, being sent fake products (that could contain anything at all, and could even be more dangerous than Duromine), or could lead to customs confiscating your order.

What Does Duromine Claim To Do?

The manufacturer’s official website makes the following statements about Duromine and how it works to aid weight loss:

Duromine is a short-term adjunct for managing weight loss in a medically monitored regimen that includes, for example, diet, exercise and behaviour modification in obese patients with a body mass index (BMI) ? 30 kg/m2 and in overweight patients with a BMI 25–29.9 kg/m2, which increases the risk of co-morbid conditions. Duromine works by directly affecting the area of the brain that controls your appetite making you feel less hungry.

Does Duromine Work?

Duromine definitely does work as an appetite suppressant and if users reduce their food intake to match their new lowered appetite, then they should lose weight. We found reviews where consumers lost huge amounts of weight very quickly. However, there are some limitations to this. The product becomes less effective over time as the body begins to build up a tolerance to phentermine. Customers who have used the supplement numerous times have reported declining effects each time they use the supplement, even if they have a break of months or even years between each course of the medication.

The side effects that can be caused by Duromine are extensive, and there are some side effects, such as dry mouth, that the majority of users appear to experience.

Duromine acts as a highly effective appetite suppressant and stimulant but only over short-term use, and with significant health risks and high chances of experiencing side effects.

What Are The Ingredients of Duromine?

There is only one active ingredient in Duromine, which is phentermine.

Does Duromine Have Any Side Effects?

There are many side effects that can occur whilst taking Duromine and other Phentermine-containing products. Some are common, and vary in severity from mildly annoying or inconvenient, up to dangerous to your long-term health. This makes it vitally important to go over your full medical history with your doctor;

Common side effects of phentermine may include:

  • Restlessness
  • Hyperactivity
  • Headaches
  • Dizziness
  • Tremors
  • Insomnia
  • Dry mouth
  • Diarrhoea
  • Constipation
  • Stomach upset
  • Impotence

To prevent sleep problems, take this medication early in the day no later than 6:00 pm. Talk with your doctor if you have increased hunger or if you otherwise think the medication is not working properly. Taking more of this medication will not make it more effective and can cause serious, life-threatening side effects. Phentermine should be taken only for a short time, such as a few weeks. Do not stop using phentermine suddenly or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

Phentermine may be habit-forming.
Do not consume alcohol whilst taking any phentermine product.
Not suitable for anyone under the age of 18. Not suitable for pregnant or breastfeeding women.
Not suitable for anyone who is taking MAO inhibitors (or has done in the previous 14-day period); MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline and tranylcypromine.
Not suitable for anyone who is taking other diet pills, taking any anti-anxiety or antidepressant medications, consuming other stimulants or who is being treated for ADHD with prescription medications.
Not suitable if you have: a history of heart disease, a history of pulmonary hypertension, severe or uncontrolled high blood pressure, an overactive thyroid, glaucoma or a history of drug or alcohol abuse

Are There Any Customer Reviews For Duromine?

There are lots of customer reviews and comments about Duromine online, on numerous forums and discussion boards. Here are a few examples:

OK, I have taken Duromine 30 mg and 40 mg a few times over about twenty years. First off: it will help you lose weight. There is nothing like it for appetite suppression. BUT: depending on the strength you are prescribed the side effects can be rough. The first time I was prescribed the strongest ones (40 mg) I was about 75 kg (165 cm tall). I didn’t sleep for about a week, had heart palpitations and jitters for days, and ate almost nothing. Not surprising I lost about 5 kgs in the first two weeks! The thing with Duromine though is that your body starts getting used to it and it starts to lose its effectiveness. I was prescribed the 40 mg again last year (at only 66 kg) and it knocked off 6 kg in about a month, but, of course, once you stop taking it your appetite returns, it’s just not realistic the way it just makes you want to eat nothing at all. I went back up to about 67 kg soon after and was given another prescription (I was surprised I even got one to be honest) but it did nothing except give me added energy and keep me awake.

I do love Duromine when it works but for me the side effects just aren’t worth it. Constipation, really bad moods, sleeplessness, dry mouth, racing heart. Plus the fact that most good GPs won’t prescribe it unless you are truly and dangerously obese tells you something about what they think of it. My old GP told me over ten years ago that he refused to prescribe it at all and was expecting it to be completely banned at some stage due to the long-term damage it can do to the heart and kidneys. There’s no magic bullet unfortunately, but just hard work and sensible choices multiplied by every single day.

I was prescribed the 30 mg Duromine pill, a month’s supply for $100 (ouch!), but it was definitely worth the money. I have just finished two weeks worth, and I’ve lost 4 kgs (8.8 lbs). I have tried to stick to a healthier diet. However I am still not very active. I have gone from 64 kgs, to 60 kgs (I’m only 151 cm tall). These drugs make me feel like I’m on speed! It gives me so much energy and motivation! I found it did decrease my appetite, but I still ate three meals a day to nourish my body. I haven’t noticed much of a different in my sleeping patterns. However, this medication has given me slight constipation and a very dry mouth. I take the 30 mg tablets as soon as I wake up around 5 am-7 am, and then from around 9.30-3pm I am full of energy and am really happy and cheery, but then I find that toward the end of the day around 4 pm-8 pm, I start feeling a bit sad, withdrawn and tired (probably from the drug wearing off). But I just remind myself that it’s just from the medication and everything is fine.

Pros: Quick acting, lots of energy, reduces appetite, helps you lose weight quickly, encourages me to drink more water because of my dry mouth

Cons: Effects my mood, constipation, heart beats faster than usual, DRY MOUTH!

Other than my mood, cotton mouth and constipation, I haven’t had any other symptoms.

Note: one day I took the 30 mg tablets at 8 am, then had 3 coffees at around 9–10 am. DON’T do that, you will have so much energy, and you will get so unwell in the stomach and won’t be able to eat or move all day without throwing up!

I have started taking the 40 mg and for the first 2 days I felt jittery and had trouble sleeping, but now I feel fine although I am barely eating it’s been 5 days now and I’m drinking 2L of water a day, no junk food or alcohol and I haven’t lost any weight! I have cut my portion sizes down in half and still nothing… I am exercising but can’t lose the weight.

I am on day 5 and have lost around 4 kg when I weighed myself last night. I have PCOS and have tried everything. Nothing worked until I started taking Duromine. My side effects have been pretty bad I have very bad dizzy spells every day since day one and no energy I couldn’t even drive one night I felt like I was blacking out or had vertigo. I get around 3–4 hours sleep max. Dry mouth and tummy pains. I have been eating small meals through out the day. I will be getting back into cycling this week so I can get the full benefit of the drug. I am at work feeling faint and tired and sick but I think it’s just how I react to it.

Does Duromine Offer a Money-Back Guarantee?

Duromine is not covered by a money-back guarantee. It is unlikely that Duromine can be returned at all after purchase; returns policies may vary hugely, and are up to your local pharmacist who fills your prescription.

Where Can I Buy Duromine?

It is difficult to find an actual price for Duromine, as it is a prescription medication, and is therefore not easy to obtain. We have found reviewers who mention paying around $100 for a month’s supply of the drug.

One woman stated: “My Duromine cost $106.70. I do have a healthcare card but the chemist said it’s not covered but I can take my receipt to Medicare and get some money back.”.

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Disclaimer: Our reviews and investigations are based on extensive research from the information publicly available to us and consumers at the time of first publishing the post. Information is based on our personal opinion and whilst we endeavour to ensure information is up-to-date, manufacturers do from time to time change their products and future research may disagree with our findings. If you feel any of the information is inaccurate, please contact us and we will review the information provided.

Have Your Say

1 comment on 'Duromine'

  1. My doctor prescribed me 15mg of Duromine here in NZ. It cost me $90+ dollars which I started to pay off with the chemist. It was not suppressing my appetite so I called my doctor and he prescribed me the 30mg Duromine. Another $90 in the same month which I didn’t pay yet.

    Luckily here in New Zealand, we have the Consumer Guarantees Act. I want a refund for an overpriced product that didn’t do what it claimed it could do. I am not paying for the second box. I am about to call Bausch and Lomb to demand a refund.

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