Duromine pills

Duromine: Essentials About Popular Weight Loss Pills

, reviewed by
 – Updated April 11, 2023
, reviewed by
 – Updated April 11, 2023
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Table of Contents


Brand name: Duromine [djˈʊ͡əɹəmˌa͡ɪn]
Generic version: Metermine

Active ingredient: Phentermine [
Schedule: S4

Manufacturer: iNova Pharmaceuticals


This Consumer Medicine Information (CMI) is intended for persons living in Australia and New Zealand.

Consumer Medicine Information (CMI) summary

The whole CMI is shown on the next page. Always check with your doctor or pharmacist if you have questions or concerns about any drug.

Medicine information leaflet for the general public.

Please read this information leaflet carefully before starting treatment with Duromine.

Why am I using Duromine? What is it used for?

For those who are overweight, the anorectic medication Duromine may be helpful as a short-term supplement to behavioural modification, physical activity, and calorie restriction. A Body Mass Index (BMI) of 30 or over is widely recognized as an indication of obesity. People with a body mass index (BMI) of 25 to 29.9 who are overweight and at an increased risk of morbidity may also begin taking Duromine. A doctor should rule out any underlying organic secondary causes of obesity before giving the medicine.
Body Mass Index Calculator

BMI Calculator

BMI is calculated by dividing your weight in kilograms by your height in metres squared.

Enter your measurements and click ‘calculate' for your body mass index.

If your BMI is above or below the normal range but you consider yourself to be of normal and healthy weight for your height, chat with your doctor about any potential health concerns.

This calculator has been reviewed by NeverGiveUpTeam experts and is based on reputable sources of medical research. It is not a diagnostic tool and should not be relied on as a substitute for professional medical or other professional health advice.

What should I know before I take Duromine?

Precautions before taking Duromine

  • Are you allergic to any phentermine-containing medications or other weight-loss medications?
  • Are you a child under the age of 12 years? 
  • Do you have very high blood pressure or pulmonary hypertension?
  • Do you have problems with the valves in your heart?
  • Do you have an illness that affects the blood vessels in your brain?
  • Do you have severe heart disease, including changes in the rhythm or rate of the heartbeat?
  • Do you have blood vessel constriction caused by thickening or hardness of the blood vessel wall?
  • Do you have an overactive thyroid gland? 
  • Do you suffer from mental health issues like depression or anorexia nervosa (eating disorder)?
  • Do you have glaucoma (high pressure in the eye)?

Do not delay informing your doctor if you have replied “yes” to any of these questions. Some medical conditions prohibit or need careful use of Duromine.


Do not use Duromine if:

  • you are taking or have taken MAOI antidepressants during the last 2 weeks;
  • you have past drug or alcohol abuse.

Do not use this medicine if the packaging has been tampered with or shows signs of damage. Bring back any spoiled or old drugs to the pharmacy.

Consult your doctor if you take other drugs or have:

  • angina (chest pain);
  • hypertension;
  • diabetes;
  • epilepsy.

Pregnancy and breastfeeding

Visit the doctor if you are pregnant or thinking about becoming pregnant. Set up an appointment with your primary care physician if you are contemplating or actively engaged in breastfeeding.

What if I am taking other medicines?

Don’t forget to mention all of your drugs, including vitamins and supplements, to your doctor or pharmacist. Some medications may alter Duromine’s effectiveness.

We talk about:

  • other weight-loss medications;
  • drugs against depression, OCD, and other mental disorders;
  • migraine ergot-like drugs;
  • cough and cold medications;
  • thyroid hormones;
  • blood pressure meds.

How do I take Duromine?

How much to take

When to take Duromine

If you forget to use Duromine

If you use too much Duromine

You may need urgent medical attention if you think you have taken too much Duromine.

You should immediately:
phone the Poisons Information Centre 
(by calling 13 11 26 in Australia or 0800 764 766 [0800 POISON] in New Zealand), or

contact your doctor, or
go to the Emergency Department at your nearest hospital.

You should do this even if there are no signs of discomfort or poisoning.

What should I know while taking Duromine?

Things you should do

Call your doctor straight away if you:

  • got pregnant while taking Duromine;
  • suffer rapid weight loss, difficulty breathing, chest discomfort, fainting, and lower limb swelling;
  • cannot exercise as much as you usually can.

Things you should not do

Driving or using machines

Drinking alcohol

Looking after your medicine

Getting rid of any unwanted medicine

Are there any side effects?

Every medication has side effects. Minor adverse effects are typically temporary, although some do need medical attention. Contact your doctor or pharmacist if you have any concerns about side effects.

Less serious side effects

Less serious side effects

What to do

  • feeling more awake than usual and trouble sleeping;
  • your heart seems to beat faster and harder;
  • your blood pressure may be raised slightly;
  • irregular heartbeats;
  • feeling restless;
  • feelings of extreme happiness followed by depression and tiredness;
  • nervousness;
  • tremor (shaking);
  • headache;
  • dizziness;
  • fainting;
  • nausea;
  • vomiting;
  • diarrhoea or constipation;
  • stomach cramps;
  • dry mouth or an unpleasant taste in your mouth;
  • you cannot exercise as much as you usually can;
  • difficulty passing urine;
  • skin rashes;
  • impotence;
  • changes in sexual drive;
  • swelling of the lower limbs;
  • swelling of the face;
  • sudden or rapid weight loss.
Speak to your doctor if you have any of these less serious side effects and they worry you.

Serious side effects

Serious side effects

What to do

  • heart attack
  • stroke;
  • chest pain;
  • myocardial infarction;
  • difficulty breathing.
Call your doctor immediately, or go to the Emergency Department at your nearest hospital if you notice any of these serious adverse effects.

Reporting side effects

After seeking medical advice, you may report adverse effects to the Therapeutic Goods Administration  in Australia or Medsafe in New Zealand. You can help determine the medicine’s safety by reporting adverse effects. Please check with your doctor or pharmacist before discontinuing any drugs.

What Duromine contains

Active ingredient (main ingredient)Phentermine
Other ingredients (inactive ingredients)
  • lactose monohydrate;
  • liquid paraffin;
  • magnesium stearate;
  • gelatin capsules hard PI (1947);
  • titanium dioxide;
  • iron oxide black (CI 77499);
  • sodium polystyrene sulfonate.
Duromine 15 mg also contains:
  • brilliant blue FCF (CI 42090);
  • iron oxide yellow (CI 77492).
Duromine 30 mg also contains:
  • iron oxide red (CI 77491).
Duromine 40 mg also contains:
  • erythrosine (CI 45430);
  • sunset yellow FCF (CI 5985.
Potential allergens
  •  sugars as lactose monohydrate.

What Duromine looks like

Duromine capsules are available in three strengths in packs of 30 capsules and two strengths in packs of 7 capsules.

15 mg - AUST R 10941

Grey and green and marked DUROMINE 15

duromine 15mg weight loss
30 mg - AUST R 76680

Grey and reddish brown and marked DUROMINE 30

40 mg - AUST R 10942

Grey and orange and marked DUROMINE 40

Who distributes Duromine



New Zealand


iNova Pharmaceuticals (Australia) Pty Limited

iNova Pharmaceuticals (New Zealand) Pty Limited 


Level 10, 12 Help Street

Chatswood NSW 2067

74 Westney Road, Airport Oaks, Auckland


Tel: 1800 630 056

Tel: 0508 375 394


  1. Australian Medicines Handbook. Phentermine. [Monograph online] AMH Pty Ltd 2007. [Cited December 1, 2007]. Available from: [URL Link]
  2. Duromine. MIMS Online. [Monograph online] MIMS Australia Pty Ltd 2007. [Cited December 1, 2007]. Available from: [URL Link]
  3. Lazo, J, Gilman A, Brunton L, Parker K. Goodman & Gilman’s The Pharmacological Basis of Therapeutics. 11th ed. New York: McGraw-Hill; 2005.
  4. New Zealand Medicines Formulary. Phentermine. Available from: [URL Link]
  5. Health Navigator, New Zealand. “What is Duromine?”, May 2022. Available from: [URL Link]
  6. News Medical Life Sciences. Duromine. Available from: [URL Link]
  7. NPS Medicinewise. Duromine. Phentermine, April 2021. Available from: [URL Link]
  8. Health Direct. Duromine, Australia. Available from: [URL Link]
  9. Health Direct. Australian Health Thesaurus, Australia. July 1, 2022 [URL Link]
  10. Australian Government. Department of Health and Aged Care. Australian Register of Therapeutic Goods (ARTG). June 29, 2022. Available from: [URL Link]
  11. GuildLink. Powering the better use of medicines. June 30, 2022. Available from: [URL Link]

Healthdirect is not for emergency usage. Call triple zero (000) if you have an acute sickness, overdose, or emergency.

When created, correct information was provided. This material shouldn’t be used to replace medical advice, diagnosis, or treatment. Please see our T&Cs.

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1 year ago
Rate the medicine taking :

So dry mouth and insomnia are leaders among side effects. Not so bad!

1 year ago
Rate the medicine taking :

Special thanks for the pictures. I was wondering what the drug looks like

1 year ago
Rate the medicine taking :

Wow, I didn’t know the small medication could have such severe negative effects!

1 year ago
Rate the medicine taking :

While on Duromine, I am unable to work out cause I’m too tired. It happened every time I took the drug ( I did it several times). The article suggests seeking medical attention in this case. But I don’t see what can be done by the doctors here.

1 year ago
Rate the medicine taking :

One time, I gave someone else a dose of the medicine I was taking. Well, she already had the prescription. That’s really not a huge issue.

1 year ago
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It’s so frustrating that I need to announce to the world that I take the drug. That really irritates me. Does anybody feel me?

1 year ago
Rate the medicine taking :

There are so many things I didn’t know so far. Likely, I need to take this more seriously and make an appointment with my doctor…

1 year ago
Rate the medicine taking :

Hold on a sec. You may take tablets even before a morning meal? Isn’t that weird?

1 year ago
Rate the medicine taking :

Thanks, that’s helpful. Side-effects information was beneficial. Everything’s in one spot!

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