Diethylpropion (oral)


Diethylpropion is known as an appetite suppressant. This means it is used as a means to help you eat less. It is designed for patients who need to urgently lose weight, but have been unable to do so through dieting and exercising. However, be aware that Diethylpropion is only available via prescription by your doctor. You should not try to access and use this drug without having been instructed to do so by your doctor. It is known to react with a number of different things and can be dangerous to certain patients.

Condition(s) treated

Type of medicine

  • Tablet

Side Effects

As with almost all drugs, Diethylpropion can cause a wide variety of different side effects to occur. This is not to say you should expect any, but is rather pointing out the potential of that happening. Directly below is a list of side effects which are more threatening to your physical health. If you experience any of them at any point, then seek urgent medical attention.


  • Hearing, feeling, or seeing, things that are not present

Incidence not known

  • Burning when urinating

It is possible for you to overdose on diethylpropion, and here are the side effects of that occurring. If you or anyone you know has overdosed, then contact emergency medical help immediately.

As you may imagine, not all side effects necessarily require medical assistance. Instead, there are a number of much milder side effects which can be lived with. Below is a list of less serious side effects. If you experience any, then there is a chance they will lessen or pass during your treatment using Diethylpropion. However, if the side effects are causing you prolonged worry or discomfort, then you should still notify your doctor. They may be able to advise an adjustment to your dosage, or another means, so as to reduce the effects you are experiencing.

Incidence not known

  • General feeling of illness or discomfort

If you are experiencing other side effects which are not on this list, then you can also contact a doctor for advice.


Depending on your exact personal circumstances, the dosage you are prescribed by your doctor could vary greatly from someone else's. Below you can find an average of typical dosages, however, if your dosage differs at all, then do not alter how much you take. Instead only stick to taking the exact amount as told by your doctor. Also, follow any other advice they gave you during your consultation. Be aware that your prescription also depends on how frequently you take the medicine as well as which strength tablets you have.

For immediate-release tablets:

  • Adults and teenagers aged 17 and above. Take 25mg tablets 3 times a day. One should be taken before meals, and then in mid-evening to avoid night-time hunger.

For controlled-release tablets:

  • Adults and teenagers aged 17 and above. Take 75mg one time a day (usually around mid-morning).

It is important that you set reminders for taking your tablets, and try not to miss any intended doses.However, if you do miss one, then take it as soon as you realize. Except for circumstances where you are almost due to take your next dose. In such cases, skip the missed dose as it is important you do not double dose.

You should stick explicitly to the prescription as offered by your doctor. This means only taking the amount they say, and stopping once they say your course of treatment is over. It is possible to get a physical or mental dependence on Diethylpropion if you take more frequently than as told by your medical professional.

Your doctor will put you on either the controlled-release tablet or quick-release tablet, depending on which is best for your circumstances.

Do not crush, break or chew the tablets you are given. Instead, swallow them whole.

Diethylpropion will be prescribed alongside a regular exercise plan and reduced-calorie diet plan. These plans will be based on your physical condition, and you should stick to these as accurately as you do your intake of the drug.


It is possible that Diethylpropion will have an interaction with another drug you are currently taking. That is why it is important you are honest and upfront with your doctor about any and all drugs you are taking. This includes all prescription and non-prescription drugs. In some cases, it may be that an interaction is expected, in which case your doctor may be able to offer ways to lessen the interactions. However, with other drugs, it is usually not recommended that you take them whilst taking Diethylpropion. Directly below is such a list of drugs. Make it very clear if you take any of the following.

  • Furazolidone

There is also a chance that the Diethylpropion could react with other aspects of your daily intake. This includes things you eat, drink and smoke. Be honest about what you typically consume on a daily basis as well as how much you smoke or drink alcohol. It is likely your diet may need to be altered anyway in order to couple maximum benefits from taking the drug and to losing weight.

It could also be that the Diethylpropion will interact with other existing medical problems that you have. Be especially clear to highlight any of the following medical conditions which are known to interact negatively with this drug.


Before prescribing Diethylpropion, your doctor needs to ensure it is suitable for you to take it. Part of this process means looking into any allergies that you have. Be clear in highlighting any and all allergies you have to this drug, or any others, as well as any animals, dyes, foods, or preservatives.

As of writing, suitable studies have not been performed into the safe usage of Diethylpropion in pediatric patients. No safety standards have been established for those younger than 17. Instead, your doctor will be able to tell you if this is a suitable drug for your child to take.

Any studies performed in elderly people taking Diethylpropion have not demonstrated any signs that the usefulness is reduced. However, it is worth noting that older patients are more likely to have age-related kidney problems. In such cases, your doctor may need to take on greater levels of care with your prescription.

Any studies performed on the uses of Diethylpropion have not demonstrated any risk to the fetus. However, new studies may be carried out and your doctor is best placed to inform you of any potential risks, and to weigh them against the benefits the drug offers.

With regards to breastfeeding, no adequate studies have currently been performed. It is unclear as to whether there would be an increased risk to the infant child. Again, your doctor will be able to make an informed decision and weigh the risks and benefits.

Be sure to attend all scheduled appointments with your doctor whilst taking Diethylpropion. These are important so that they can monitor your condition and make any adjustments as necessary.

You should not take Diethylpropion if you are currently taking any of the following medicines.

  • Didrex®

Also, you should not take Diethylpropion if you have used any MAO Inhibitors (MAOI) within the last 14 days. Such as:

  • Parnate®

Doing so could lead to a number of unwanted and serious side effects.

You should never increase the dose this medication unless otherwise instructed by your doctor. It can be habit-forming, so even if you are noticing little change in your weight, be sure to first contact your doctor.

If you experience chest pains, faint, have difficulty breathing, see swelling in your lower legs or feet, or are less able to exercise, then contact your doctor immediately. These are signs that you could have a very serious problem with either your heart or lungs.

In some cases, Diethylpropion can make you less alert, dizzy, or lightheaded. So you should only drive if you have experience with how this drug affects you. If you do experience any of these symptoms, then don't drive, or do any other dangerous tasks.

Diethylpropion can add to the effects you experience when taking CNS depressants or alcohol, meaning you can become even more drowsy and less alert. Here are some examples of such drugs to possibly avoid, or to discuss with your doctor before taking alongside Diethylpropion.

  • Sleeping medicine, tranquilizers, or sedatives

If you are diabetic, then you may find that this drug causes your blood sugar levels to fluctuate. You can discuss this with your doctor and they can advise on any steps to take to mitigate these changes.

Whilst taking Diethylpropion, you should not take any other drugs unless they have been approved by your doctor. This includes all prescription, non-prescription, supplements, herbal remedies, or other drugs.


At all times, you should ensure your Diethylpropion is kept in a sealed container, away from heat and at room temperature. Keep it away from direct light, moisture, and ensure it is not left to freeze. It can be dangerous to children, so should be safely stored away from their reach. Once you are finished taking your intended course of treatment, dispose of any remaining drugs in a sensible and safe manner as instructed by your doctor. Never take any out-of-date drugs.


If you are suffering from obesity or prolonged weight gain that you cannot shift, then Diethylpropion may be a helpful drug for you. When used alongside a regular exercise plan and reduced diet plan, the results can be beneficial for all areas of your life. However, you need to be careful in sticking to your exact prescribed dosage of the drug and should stick to other plans given to you. Failure to do so will greatly reduce any benefits you should expect to achieve.

Diethylpropion is only given to suitable patients who have undergone a full medical consultation. There are a number of interactions and harmful side effects that can occur, so it is not suitable for everyone. It can also lead to cases of addiction and reliance upon it, so your doctor will try and avoid such an issue at all cost. You will likely be scheduled in for regular meetings with your doctor whereby he can access any change, and make adjustments if necessary. It is important you attend every one of these appointments.

Above you can find full information regarding any unwanted side effects that could occur. If you experience any at all, and they worry you, then contact your doctor immediately. They may need to alter your dosage or prescribe a different way to counteract the effects.