Description
Decadron injection (dexamethasone sodium phosphate) is a potent corticosteroid used to reduce inflammation, suppress immune responses, and manage allergic and certain endocrine conditions. Each ampoule contains 1 ml of solution delivering 4 mg dexamethasone. It is used under medical supervision, often in hospitals or clinics.
Ingredients
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Active ingredient: Dexamethasone sodium phosphate, equivalent to 4 mg dexamethasone per 1 ml ampoule.
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Excipients / inactive ingredients: (may include buffer, stabilizers, water for injection)
Drug Class
Corticosteroid / Glucocorticoid
Dosage Form
Sterile injection (aqueous solution) — 1 ml ampoule delivering 4 mg dexamethasone.
Uses (Indications)
Decadron injection may be used in:
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Management of severe allergic reactions and anaphylaxis
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Control of inflammation and edema (e.g., cerebral edema, spinal cord compression)
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Acute exacerbations of asthma or COPD
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Autoimmune, rheumatic, dermatological conditions
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As adjunct therapy in certain endocrine or hematologic disorders
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As part of chemotherapy regimens for antiemetic or adjunctive steroid effects
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To suppress immune responses, e.g. in transplant protocols
(References: MedlinePlus, Drugs.com)
Dosage
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Adults: Typical injectable doses vary widely depending on the condition. Doses of 0.5 to 24 mg (IM or IV) daily have been used in clinical practice.
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For intrajoint or local injection: e.g. 2–4 mg for large joints, 0.8–1 mg for small joints.
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Children: Dose based on body weight (e.g. 0.15 to 0.6 mg/kg daily IV or IM) in some guidelines.
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The specific regimen (frequency, tapering schedule) must be determined by a physician.
In Case of Overdose
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Symptoms: adrenal suppression, hyperglycemia, fluid retention, hypertension, electrolyte imbalance, immune suppression, Cushingoid features
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Management: supportive care, gradual tapering of corticosteroids, monitoring of metabolic and endocrine parameters
Missed Dose
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In clinical/injection settings, “missed dose” is not usually applicable as doses are given under supervision.
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Always follow medical direction; do not self-administer or double dose.
How to Use / Administration
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Administer via intravenous (IV) or intramuscular (IM) injection using aseptic technique.
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For IV, infusion or slow administration is preferred to avoid sudden hemodynamic changes.
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In joint or tissue injection (if indicated), local administration is done under sterile conditions.
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Physician must calculate dose, adjust for patient’s condition, and monitor.
When Not to Use (Contraindications)
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Known hypersensitivity to dexamethasone or corticosteroids
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Systemic fungal infections
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Untreated infections (unless treated)
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Active tuberculosis (unless under treatment)
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Peptic ulcer disease (active)
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Uncontrolled viral, bacterial, fungal, or parasitic infections
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Use with caution (or avoid) in patients with uncontrolled diabetes, hypertension, glaucoma, osteoporosis, mental health disorders, severe renal or hepatic disease
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In pregnancy or lactation, use only if benefit outweighs risks (pregnancy category C)
Side Effects
Common / less serious:
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Increased appetite, weight gain
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Insomnia, restlessness
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Mood changes (irritability, euphoria, depression)
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Abdominal discomfort, dyspepsia
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Hypertension, fluid retention
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Elevated blood sugar levels
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Acne, skin thinning, bruising
Serious / less common:
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Adrenal suppression
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Increased susceptibility to infections
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Peptic ulcers or GI bleeding
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Osteoporosis, bone density loss
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Cataracts, glaucoma
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Muscle weakness, myopathy
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Psychiatric effects (psychosis, depression)
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Electrolyte imbalance (hypokalemia)
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Delayed wound healing
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Allergic reactions (rare)
Precautions & Warnings
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Monitor blood pressure, blood glucose, electrolytes, signs of infection
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Taper dose when discontinuing long-term therapy to avoid adrenal insufficiency
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Avoid abrupt withdrawal, especially after prolonged use
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Use lowest effective dose for the shortest duration
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Be cautious in patients with comorbidities (diabetes, hypertension, peptic ulcer, osteoporosis, mental illness)
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Avoid live vaccines during therapy, as immune response may be suppressed
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Monitor ocular health (for glaucoma, cataracts)
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Inform surgical/dental teams of steroid therapy before procedures
Drug Interactions
Potential interactions include:
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NSAIDs (e.g. ibuprofen) – increased risk of GI bleeding
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Anticoagulants (warfarin) – may alter anticoagulant effect
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Diuretics (esp. potassium-loss diuretics) – risk of hypokalemia
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Insulin / oral hypoglycemics – may require dose adjustment due to hyperglycemic effect
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Cyclosporine, tacrolimus – increased risk of immunosuppression
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Vaccines (live attenuated) – may have reduced efficacy or increased risk
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Certain antifungals, anticonvulsants, rifampin, others – may affect metabolism of dexamethasone via CYP - affecting levels
Storage / Disposal
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Store at controlled room temperature (usually up to 25–30 °C), protect from light
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Do not freeze
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Use before expiration date
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Dispose unused or expired ampoules as per medical waste guidelines
Control Drug Status
Quick Tips
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Always use under physician supervision; do not self-administer
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Monitor for side effects regularly (blood sugar, BP, signs of infection)
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Use the minimal effective dose and taper off gradually
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Avoid concomitant use of NSAIDs unless necessary
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Inform healthcare providers (surgeons, dentists) about your steroid therapy
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Keep vaccination schedule and live vaccines under supervision during therapy