Onvin doses
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Onvin dosing doses indications
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No results were found for "Onvin" in the medical database. This may be a brand name used in a specific region or a spelling variation. Based on my knowledge:
Onvin is a brand name for vincristine sulfate, a vinca alkaloid used in chemotherapy.
Vincristine (Onvin) Dosing
Standard Adult Doses
| Indication | Dose | Route | Frequency |
|---|---|---|---|
| ALL, lymphomas, solid tumors | 1.4 mg/m² | IV push | Weekly |
| Maximum single dose (adults) | 2 mg (cap) | IV | Per cycle |
| Pediatric (various protocols) | 1–1.5 mg/m² | IV | Weekly |
Critical: The 2 mg cap per dose is widely used in adults to reduce neurotoxicity, though some pediatric and protocol-specific regimens omit the cap.
Common Regimens
- CHOP (lymphoma): 1.4 mg/m² IV on Day 1, every 21 days (capped at 2 mg)
- COPP/CVP: 1.4 mg/m² IV Day 1 & 8
- ALL induction: 1.5 mg/m² IV weekly × 4 weeks (pediatric protocols may differ)
- MOPP: 1.4 mg/m² IV Days 1 & 8
Special Populations
- Hepatic impairment: Reduce dose by 50% if bilirubin >3 mg/dL (vincristine is hepatically metabolized and excreted in bile)
- Renal impairment: No dose adjustment typically required
- Elderly: Use with caution; increased neurotoxicity risk
Key Safety Points
- FATAL if given intrathecally — must be administered IV only; should be dispensed in a minibag (not a syringe) to prevent accidental intrathecal injection
- Neurotoxicity is the dose-limiting toxicity: peripheral neuropathy, constipation/ileus, SIADH
- Vesicant — avoid extravasation
- Drug interactions: Strong CYP3A4 inhibitors (e.g., azole antifungals) increase toxicity significantly
If you meant a different drug spelled "Onvin," please clarify and I can look it up further.
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