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# Arsil (Arsenic Trioxide)
## Overview
Arsenic trioxide is an antineoplastic agent used in the treatment of acute promyelocytic leukemia (APL). It induces differentiation and apoptosis of leukemic cells.
## Primary Indications
* Relapsed or refractory acute promyelocytic leukemia (APL) in patients who have undergone differentiation therapy.
## Adult Dosing
The typical adult dose for arsenic trioxide is **0.15 mg/kg/day** administered intravenously over 1-2 hours daily until complete remission is achieved. In cases of persistent or relapsed disease after initial treatment, a second course may be administered. The exact duration and subsequent dosing depend on patient response and hematologic parameters, often guided by specific institutional protocols.
## Pediatric Dosing
Pediatric dosing is not well-established. Extrapolation from adult studies or consultation with pediatric oncologists is recommended.
## Dose Adjustments
* **Myelosuppression:** Dose interruption or reduction may be necessary based on the severity of neutropenia, thrombocytopenia, or other cytopenias. Specific criteria for interruption and resumption are typically outlined in institutional protocols.
* **Liver Impairment:** Use with caution. No specific dose adjustments are provided, but close monitoring of liver function is warranted.
* **Renal Impairment:** Use with caution. No specific dose
