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Memory Joggers: Medication Information

Algorithm for Adjusting Warfarin Doses According to INR

Day
INR
Dose, in mg
1
5.0
2
<1.5
1.5 to 1.9
2.0 to 2.5
>3.0
5.0
2.5
1.0 to 2.5
0.0
3
<1.5
1.5 to 1.9
2.0 to 2.5
2.5 to 3.0
>3.0
5.0 to 10.0
2.5 to 5.0
0.0 to 2.5
0.0 t0 2.5
0.0
4
<1.5
1.5 to 1.9
2.0 to 3.0
>3.0
10.0
5.0 to 7.5
0.0 to 5.0
0.0
5
<1.5
1.5 to 1.9
2.0 to 3.0
>3.0
10.0
7.5 to 10.0
0.0 to 5.0
0.0
6
<1.5
1.5 to 1.9
2.0 to 3.0
>3.0
7.5 to 12.5
5.0 to 10.0
0.0 to 7.5
0.0

The Journal of Family Practice
Vol. 48, No. 4 (Apr), 1999
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