Oxandrolone has 3 known drug interactions based on U.S. FDA drug labeling data. 2 are classified as major interactions requiring close medical supervision. Notable interactions include combinations with Warfarin, Warfarin Sodium, Torsemide. Patients taking Oxandrolone should inform their healthcare provider of all current medications — including over-the-counter drugs and supplements — to avoid potentially harmful combinations. Data sourced from OpenFDA and the NIH National Library of Medicine.
- Total
- 3
- Major
- 2
- Moderate
- 1
Major (2)
- Oxandrolone + Warfarin— CYP2C9 inhibitor that increases warfarin effect and INR; requires close INR monitoring
- Oxandrolone + Warfarin Sodium— CYP2C9 inhibitor that increases warfarin effect and INR; requires closer INR monitoring.
Moderate (1)
- Oxandrolone + Torsemide— CYP2C9 inhibitor that decreases torsemide clearance and increases plasma concentrations; monitor diuretic effect and blo…