Evista Drug Interactions

Bile Acid Sequestrants
Bile acid sequestrant medications may bind to Evista in the digestive tract, preventing it from being absorbed into the body. This may make Evista less effective. Do not take Evista and a bile acid sequestrant at the same time. It is best to take these medications at least several hours apart.
Theoretically, Evista may interact with diazepam, since both medications are highly bound to proteins in the blood. However, since this interaction has not actually been studied, it is not known if taking these medications together will cause any problems. Your healthcare provider may choose to monitor you more closely in such a case.
Estrogen Medications
Evista works like estrogen in some ways and like an anti-estrogen in other ways. As a result, it is possible that estrogen medications may make Evista less effective or may increase the risk of certain Evista side effects. Therefore, taking Evista with an estrogen is not recommended.
Thyroid Medications
There have been reports that Evista may make thyroid medications less effective, although this has not been confirmed in formal studies. Your healthcare provider may decide to monitor you more closely if you are taking both of these medications.
If you are taking both warfarin and Evista, your healthcare provider may need to monitor your prothrombin time ("pro time" -- a blood test to monitor people on warfarin) more closely, especially when you are starting or stopping Evista.

Final Thoughts on Evista Drug Interactions

It is possible that not all Evista drug interactions were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about any specific drug interactions that may apply to you.
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Evista -- Medication Information

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