Dec 30, 2013 9:23 AM by Lindsay MacLeod, KSBY News
A drug that is commonly prescribed to prevent strokes in patients with an irregular heartbeat may actually increase that risk during the first month of use.
A new study found Atrial Fibrillation patients who were just starting Warfarin treatment had almost double the risk of stroke compared to patients not taking the drug, especially during the first week of use.
Once 30 days passed, Warfarin patients cut their stroke risk in half.
Researchers say the new study shouldn't stop doctors from prescribing Warfarin, but patients should be aware of the possible risks in the first month of use.
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