Dexamethasone
Decadron (dexamethasone) is a synthetic corticosteroid medication used to treat a wide range of conditions including inflammatory disorders, allergic reactions, certain cancers, and hormonal deficiencies. It works by suppressing the immune system and reducing inflammation in the body. Due to its potency and multiple formulations (tablet, injection, eye drops), it is prescribed for both short-term acute conditions and long-term management of chronic diseases.
Decadron is a corticosteroid that reduces inflammation and suppresses immune activity to treat various inflammatory, allergic, and hormonal conditions.
Key facts at a glance
- RxNorm
- 227682
- Generic
- Decadron
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treats inflammatory conditions (arthritis, dermatitis), allergic reactions, asthma exacerbations, certain cancers (leukemia, lymphoma), adrenal insufficiency, and reduces cerebral edema. Also used as an antiemetic during chemotherapy and for COVID-19 severe inflammation.
Acts as a glucocorticoid receptor agonist, inhibiting phospholipase A2 and reducing production of inflammatory mediators like prostaglandins and leukotrienes. Suppresses immune cell function and reduces capillary permeability to decrease swelling and inflammation.
Long-term use requires gradual tapering to avoid adrenal suppression. Monitor for side effects including weight gain, osteoporosis, elevated blood glucose, mood changes, and increased infection risk. Contraindicated in systemic fungal infections. Available by prescription only.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy