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A MyBCTeam Member asked a question 💭

I have diagnosis and treatment for IDS (Er + Her-) Had radiotherapy and taking AI- letrozole

August 14
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That's a great question to be asking, especially since you're on letrozole as part of your hormone therapy after radiotherapy for ER+/HER- breast cancer.

Inositol is a naturally occurring compound often taken as a supplement. While some people explore it for managing certain side effects, the concern with any supplement Show Full Answer

That's a great question to be asking, especially since you're on letrozole as part of your hormone therapy after radiotherapy for ER+/HER- breast cancer.

Inositol is a naturally occurring compound often taken as a supplement. While some people explore it for managing certain side effects, the concern with any supplement while on an aromatase inhibitor (AI) like letrozole is potential interference with your treatment. Research has shown that breast cancer patients taking supplements during treatment have, in some cases, had worse outcomes. Doctors tend to be cautious about supplements alongside medications like letrozole because:

- It's not always clear what's in supplements
- They can interact with hormone therapies
- The safety data specific to breast cancer patients is limited

The strongest advice here is to speak directly with your oncologist before starting inositol. They know your full treatment picture and can give you a personalized, safe answer. Don't be shy about asking — it's exactly the kind of question they want to hear! 😊

August 14

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