Dexamethasone

Uses	Asthma, Allergic Reactions, Rheumatoid Arthritis
Therapy	Steroid
Side Effects	Anxiety, Sleeplessness, Stomach Discomfort, Mood Swings

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Molecule Description

Dexamethasone is a prescription medicine in the corticosteroid class. It helps reduce inflammation, suppress overactive immune responses, and relieve swelling and allergic reactions. It is used for conditions such as asthma, arthritis, severe allergies, certain skin and eye problems, autoimmune diseases, and some cancers. It is also used to prevent nausea during chemotherapy and manage certain hormone or adrenal gland disorders. Dexamethasone works by mimicking the natural hormones produced by your adrenal glands. It blocks the release of substances in the body that cause inflammation, pain, redness, and swelling. In simple terms, it “calms down” an overactive immune system and helps restore balance when your body’s natural steroid levels are low. Some common side effects include increased appetite, weight gain, upset stomach, mood changes, trouble sleeping, acne, or mild swelling in the hands or feet. Avoid alcohol while taking dexamethasone, as it may increase the risk of stomach irritation or ulcers. Tell your doctor if you have diabetes, heart disease, high blood pressure, glaucoma, or liver/kidney problems. Avoid contact with people who have infections (like chickenpox or measles), as dexamethasone can weaken your immune system.

Uses

For the treatment of vision loss due to Diabetic Macular Edema (DME)
For the treatment of macular edema (occurs when fluid builds up in the retina of an eye) following branch retinal vein occlusion (CRVO)
For the treatment of various illnesses causing inflammation in your body
For the treatment of several different diseases of the immune system

Contraindications

When should one not use Dexamethasone

Do not take this medicine if you are allergic to Dexamethasone or any ingredient of this medicine
Do not take this medicine if you have an infection that affect your body
Do not take this medicine if you require a vaccination, especially with ‘live virus’ vaccines

Side effects

Common side effects of this drug are:

Feeling anxious, sleeping problems, thinking difficulty, confused state of mind and memory loss, sudden changes in mood
Mental disturbance
Feelings of being lonely
Stomach and gut problems
Severe pain in the back or tummy
Excess fluids build up inside your body
Heart and blood problems
Bone problems
Recurring infections
Skin problems
Eye problems
Hormonal problems (irregular or missing periods, stunted growth in children and teenagers)
Feeling of unwell or tiredness

Precautions and Warnings

Pregnancy

Dexamethasone crosses the placenta. Especially in the first three months of pregnancy, the medicine should only be used after careful benefit-risk assessment. Women should inform the doctor if they are already pregnant or if they are planning pregnancy because of long-term treatment with this medicine during pregnancy can cause growth disorders in the unborn child.

Breast Feeding

It is unknown whether it is excreted in breast milk. Harm to the infant is not yet known. So you should consult with the doctor prior to the use of this medicine.

Driving

Usually it doesn't affect your ability to drive.

Alcohol

No information is available on interactions of Dexamethasone when taken with alcohol, consult your doctor or pharmacist for further information.

Other General Warnings

Talk to your doctor if

You have any skin rash or skin itching
You have difficulty in breathing or collapse
You have swelling of the face, lips, tongue, and/ or throat
You need any surgery
You are suffering from high blood pressure, kidney disease,severe liver diseases,peptic ulcer, osteoporosis, hyperthyroidism,eye problems (cataract and glaucoma)
You are diabetic

Mode of Action

How Does It Work?

Dexamethasone helps to suppress the unwanted response of the immune system to inflammation, which helps to minimize the harmful symptoms.

Interactions

Interactions with other medicines

Medicines used for the treatment of heart and blood problems, antibiotics such as Rifampicin and Rifabutin
Medicines used for the treatment of epilepsy (such as Phenytoin, Carbamazepine, Phenobarbital, and Primidone)
Medicines used for the treatment of pain or inflammation
Medicines used for the treatment of diabetes
Medicines used to lower potassium levels
Some of the medicines for HIV(Ritonavir, Cobicistat)
Oral contraceptives containing oestrogen and progestogen
Anti-cancer treatments (Aminoglutethimide), Methotrexate, Ephedrine, Acetazolamide

Interactions with food items

No information is available on interactions of Dexamethasone when taken with food, consult your doctor or pharmacist for details.

Dosage

Overdose

Overdose symptoms may cause swelling of the throat, skin reaction,breathing difficulties. If you are affected, contact your doctor immediately or visit the nearest hospital.

Missed a Dose

Do not take a double dose if you have missed the dose; take the next dose as soon as you remember.

Frequently Asked Questions (FAQs)

Give a detailed account of your medical and surgical history. The doctor should also know about other health supplements like herbal medications, nutritional supplements that you might be taking before starting this medication. Also, tell your doctor specifically if you have diabetes. This medicine may increase glucose levels in your blood or urine. You may need to modify the dose of your diabetes medications.

Do not take any immunization or vaccination without doctor’s approval while you are on treatment with this medicine. Steroid treatments weaken the immune system. Hence, the doctor should be informed about any infection. Do not stop taking this medicine abruptly as the withdrawal symptoms are severe.

Avoid drinking alcohol, getting vaccines without your doctor’s advice, or being around people with infections such as chickenpox or measles. Alcohol and certain medicines (like NSAIDs) can increase the risk of stomach bleeding when combined with Dexamethasone.

No. Stopping Dexamethasone suddenly can cause withdrawal symptoms and affect your adrenal glands. Your doctor will give you a tapering schedule to safely reduce your dose.

Dexamethasone does not typically affect fertility or sexual function when used for a short period. However, long-term or high-dose use may influence hormone balance—discuss any concerns with your healthcare provider.

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