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Dexamethasone

Generic name: dexamethasone (oral) [ dex-a-METH-a-sone ]
Brand names: Decadron, DexPak 6 DayTaperpak, Hemady
Dosage forms: oral concentrate (1 mg/mL), oral liquid (0.5 mg/5 mL), oral tablet (0.5 mg; 0.75 mg; 1 mg; 1.5 mg; 2 mg; 20 mg; 4 mg; 6 mg)
Drug class: Glucocorticoids

Medically reviewed by Sophia Entringer, PharmD. Last updated on Aug 23, 2023.

What is dexamethasone?

Dexamethasone is a corticosteroid that prevents the release of substances in the body that cause inflammation.

Dexamethasone is used to treat many different inflammatory conditions such as allergic disorders and skin conditions.

Dexamethasone is also used to treat ulcerative colitis, arthritis, lupus, psoriasis, and breathing disorders.

There are many brands and forms of dexamethasone available. Not all brands are listed on this leaflet.

Warnings

You should not use dexamethasone if you have a fungal infection anywhere in your body.

Tell your doctor about all your medical conditions, and all the medicines you are using. There are many other diseases that can be affected by steroid use, and many other medicines that can interact with steroids.

Your dosage may change if you have any unusual stress such as a serious illness, fever or infection, or if you have surgery or a medical emergency. Tell your doctor about any such situation that affects you during treatment.

Dexamethasone can weaken your immune system, making it easier for you to get an infection or worsening an infection you already have or have recently had. Tell your doctor about any illness or infection you have had within the past several weeks.

Call your doctor for preventive treatment if you are exposed to chicken pox or measles. These conditions can be serious or even fatal in people who are using steroid medication.

All vaccines may not work as well while you are taking a steroid. Do not receive a "live" vaccine while you are taking this medicine.

Do not stop using dexamethasone suddenly, or you could have unpleasant withdrawal symptoms. Talk to your doctor about how to avoid withdrawal symptoms when stopping the medication.

Before taking this medicine

You should not use dexamethasone if you are allergic to it, or if you have:

To make sure you can safely take dexamethasone, tell your doctor if you have ever had:

Steroid medication affects your immune system. You may get infections more easily. Steroids can also worsen or reactivate an infection you've already had. Tell your doctor about any illness or infection you have had within the past several weeks.

It is not known whether this medicine will harm an unborn baby. Tell your doctor if you are pregnant.

You should not breastfeed while using dexamethasone.

How should I take dexamethasone?

Take dexamethasone exactly as prescribed by your doctor. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose.

Your dose needs may change due to surgery, illness, stress, or a medical emergency. Tell your doctor about any such situation that affects you.

dexamethasone can affect the results of certain medical tests. Tell any doctor who treats you that you are using dexamethasone.

Do not stop using dexamethasone suddenly, or you could have unpleasant withdrawal symptoms. Ask your doctor how to safely stop using this medicine.

In case of emergency, wear or carry medical identification to let others know you use dexamethasone.

Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Call your doctor for instructions if you miss a dose of dexamethasone.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

An overdose of dexamethasone is not expected to produce life threatening symptoms. Long term use of high doses can lead to thinning skin, easy bruising, changes in body fat (especially in your face, neck, back, and waist), increased acne or facial hair, menstrual problems, impotence, or loss of interest in sex.

What should I avoid while taking dexamethasone?

Avoid being near people who are sick or have infections. Call your doctor for preventive treatment if you are exposed to chickenpox or measles. These conditions can be serious or even fatal in people who are using steroid medicine.

Avoid drinking alcohol while you are taking dexamethasone.

Do not receive a "live" vaccine while using dexamethasone. The vaccine may not work as well during this time, and may not fully protect you from disease. Live vaccines include measles, mumps, rubella (MMR), polio, rotavirus, typhoid, yellow fever, varicella (chickenpox), and zoster (shingles).

Dexamethasone side effects

Get emergency medical help if you have signs of an allergic reaction to dexamethasone: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

Dexamethasone can affect growth in children. Tell your doctor if your child is not growing at a normal rate while using dexamethasone.

Common dexamethasone side effects may include:

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect dexamethasone?

Sometimes it is not safe to use certain medications at the same time. Some drugs can affect your blood levels of other drugs you take, which may increase side effects or make the medications less effective.

Tell your doctor about all your current medicines. Many drugs can affect dexamethasone, especially:

This list is not complete and many other drugs may interact with dexamethasone. This includes prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

Does dexamethasone interact with my other drugs?

Enter medications to view a detailed interaction report using our Drug Interaction Checker.

Popular FAQ

How long does dexamethasone stay in your system?

The amount of time it takes for dexamethasone to leave your body depends on your age, other medications you are taking, and your medical conditions. Dexamethasone is a long-acting corticosteroid. While it takes around 20 hours for it to leave the body for most people, the effects can last many days after your last dose. Continue reading

What is a dexamethasone suppression test used for?

A dexamethasone suppression test is a blood test used to determine if you have Cushing syndrome. Cushing syndrome occurs when too much cortisol is made by your adrenal glands. Cortisol is a hormone that helps you respond to stress, but too much cortisol can lead to health problems. Continue reading

More FAQ

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Further information

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use dexamethasone only for the indication prescribed.

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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