Breast Cancer Home > Femara Drug Interactions

If certain medications are taken with Femara, drug interactions can potentially occur. Among the drugs that can potentially interact with Femara are oral contraceptives (birth control pills) and estrogens or other hormone replacement therapy. It is possible that if you take these medicines along with Femara, they may decrease the effectiveness of Femara.

An Overview of Femara Drug Interactions

Femara® (letrozole) can potentially interact with some other medications. Some of these medicines that may lead to Femara drug interactions include:
 

Femara Interactions Explained

The following sections explain in detail the potentially negative interactions that can occur when Femara is combined with any of the drugs listed above.
 
Estrogens
Estrogens may decrease the effectiveness of Femara. Therefore, these two medications should not be combined.
 
Oral Contraceptives
Oral contraceptives may also decrease the effectiveness of Femara and should not be taken with it. Talk with your healthcare provider about alternative birth control methods.
 

Final Thoughts on Femara Drug Interactions

It is possible that not all drug interactions with Femara were discussed in this article. Therefore, you should talk with your pharmacist or healthcare provider about any specific Femara drug interactions that may apply to you.
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
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