Warfarin Dosing Calculator
Typical Dose Adjustments
| INR Range | Adjustment |
|---|---|
| <1.5 | Increase weekly dose by 10-20% |
| 1.5–1.9 | Increase weekly dose by 5-10% |
| 2.0–3.0 | No change (therapeutic) |
| 3.1–3.5 | Decrease weekly dose by 5-10% |
| >3.5 | Hold 0-1 dose, decrease weekly dose by 10-20% |
Always use clinical judgment and monitor INR closely after any adjustment.