Milpharm Quetiapine (code “E56”) from Aurobindo Pharma
Quetiapine is an atypical antipsychotic that is used for several psychiatric conditions. The formulation you mentioned—Milpharm Quetiapine (often marketed under the brand Seroquel® in many markets) and produced by Aurobindo Pharma—contains the same active ingredient but may have a different dosage form or strength depending on the country.
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1. What is Quetiapine?
| Feature | Details |
|---------|---------|
| Generic name | Quetiapine fumarate |
| Brand names | Seroquel®, Seroquel XR®, plus generic brands (e.g., Milpharm, Aurobindo, etc.) |
| Drug class | Atypical (second‑generation) antipsychotic |
| Mechanism | Partial agonist/antagonist at dopamine D2 and serotonin 5‑HT2A receptors; also influences other receptors (α1‑adrenergic, H1 histamine, etc.). |
| Pharmacokinetics | Oral; peak plasma concentration 2–3 h after dose. Metabolized primarily by CYP3A4. Half‑life ~6–7 h (immediate‑release) and ~7–12 h (extended‑release). |
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2. Indications
| Condition | Typical Uses |
|-----------|--------------|
| Schizophrenia | First‑line or adjunctive therapy |
| Bipolar I disorder | Acute mania, maintenance therapy |
| Major depressive disorder (MDD) | Adjunctive (add-on) therapy when antidepressants alone are insufficient |
| Other off‑label uses | Anxiety, irritability in autism, etc. (as per local regulations) |
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3. Common Dosage Forms & Strengths
| Form | Common Strengths |
|------|-----------------|
| Immediate‑release tablets | 25 mg, 50 mg, 100 mg, 200 mg, 300 mg, 400 mg |
| Extended‑release tablets (XR) | 25 mg, 50 mg, 100 mg, 150 mg, 200 mg, 300 mg, 400 mg, 600 mg |
| Liquid suspension | 25 mg/5 mL, 50 mg/5 mL, 100 mg/5 mL (often for pediatric or swallowing‑difficulty patients) |
Note: The “E56” tag may simply refer to an internal batch/lot code rather than a dosage strength. Always check the label for the exact milligram content.
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4. Typical Dosing (Adults)
Always follow your prescriber's specific instructions; the following is a general guideline.
| Condition | Starting Dose | Titration | Maintenance Dose | Max Dose |
|-----------|---------------|-----------|------------------|----------|
| Schizophrenia | 25 mg 1–2 × day | Increase 25–50 mg each 2–3 days | 150–400 mg / day (split) | 800 mg / day |
| Bipolar I (manic phase) | 25 mg 1–2 × day | Increase 50–100 mg each 3–4 days | 200–800 mg / day | 800 mg / day |
| MDD (adjunct) | 25 mg 1–2 × day | Increase 25–50 mg each week | 150–300 mg / day | 600 mg / day |
- Extended‑release (XR): Usually taken once daily in the evening to reduce daytime sedation.
- Immediate‑release: Can be given 2–3 × day to manage acute symptoms.
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5. How to Take Quetiapine
1. Take with food if you experience stomach upset.
2. Do not abruptly stop; taper gradually under medical supervision to avoid withdrawal (e.g., anxiety, insomnia, or potential rebound mania).
3. Avoid alcohol; can increase sedation and impair cognition.
4. Store at room temperature (not in the bathroom or in direct sunlight). Keep out of reach of children.
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6. Common Side Effects
| System | Potential Effects | When to Seek Medical Help |
|--------|-------------------|---------------------------|
| Central Nervous System | Sedation, dizziness, weight gain, dry mouth, blurred vision | Severe sedation, vision changes, or new headaches |
| Cardiovascular | Orthostatic hypotension, increased heart rate, QT prolongation (rare) | Palpitations, fainting, chest pain |
| Metabolic | Weight gain, hyperglycemia, dyslipidemia | Sudden weight gain, new diabetes symptoms |
| Endocrine | Hyperprolactinemia (may cause breast tenderness, galactorrhea) | Breast changes, menstrual irregularities |
| Others | Constipation, urinary retention, increased appetite | Severe constipation or urinary retention |
Rare but serious: Neuroleptic malignant syndrome (rigidity, fever, autonomic instability), tardive dyskinesia (involuntary movements), severe allergic reactions.
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7. Drug Interactions
| Drug | Interaction | What It Means |
|------|-------------|---------------|
| CYP3A4 inhibitors (e.g., ketoconazole, ritonavir) | ↑Quetiapine levels | Increased side‑effect risk |
| CYP3A4 inducers (e.g., rifampicin, carbamazepine) | ↓Quetiapine levels | May reduce efficacy |
| Other antipsychotics / sedatives | ↑Sedation, orthostatic hypotension | Caution, monitor BP |
| Beta‑blockers / Calcium channel blockers | ↑QT prolongation | Monitor ECG in high‑risk patients |
| Alcohol | ↑Sedation | Avoid alcohol while on therapy |
| Glucose‑lowering agents | May mask hyperglycemia | Monitor blood glucose closely |
Always inform your prescriber of all medications, supplements, and herbal products you’re taking.
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8. Precautions & Contraindications
- Severe hepatic impairment – dose adjustment may be necessary.
- Heart disease – especially QT‑interval prolongation, arrhythmias.
- Severe renal impairment – may need dose adjustment for extended‑release forms.
- History of seizures – monitor, especially at higher doses.
- Pregnancy / Lactation – limited data; use only if benefits outweigh risks. Consult your clinician.
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9. Storage & Expiry
- Room temperature (15–25 °C / 59–77 °F).
- Keep sealed; do not expose to high humidity or extreme heat.
- Check the expiration date on the bottle or blister pack.
- Disposal – If you need to discard unused medication, follow local pharmacy or hazardous waste guidelines.
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10. When to Call Your Doctor
- New or worsening dizziness, fainting, or orthostatic hypotension.
- Persistent or worsening weight gain.
- Symptoms of depression, anxiety, or mood swings.
- Any signs of an allergic reaction (rash, itching, swelling).
- Unusual movements (tremors, tics).
- If you suspect a drug interaction or side‑effect.
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11. Quick Reference for the Patient
| Question | Answer |
|----------|--------|
| What is Milpharm Quetiapine? | A generic brand of quetiapine, an antipsychotic used for schizophrenia, bipolar disorder, and as an adjunct in depression. |
| Does “E56” matter? | It’s likely a batch or code; the active ingredient and dosage are the same as other quetiapine products. |
| How do I start? | Usually start with 25 mg once or twice daily, titrated up by your prescriber. |
| Can I take it with food? | Yes, especially if you have an upset stomach. |
| Side effects? | Sedation, weight gain, dry mouth, dizziness; serious but rare risks include neuroleptic malignant syndrome and tardive dyskinesia. |
| What should I avoid? | Alcohol, other CNS depressants, and certain medications that interact via CYP3A4. |
| Do I need a refill? | Your doctor will advise based on response; always keep a buffer supply. |
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