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Why do some people react differently than others to warfarin?

Recent studies have shown that people's genes may influence how they respond to warfarin. In about one out of every three people who are taking warfarin, the drug acts quite differently than expected. Some of this unexpected response to warfarin is because of these people's genes. Researchers are learning how genetic testing may be used to figure out how to better treat these people with warfarin.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.