MyBCTeam

Headaches can be a frustrating side effect for some people taking aromatase inhibitors (AIs) like anastrozole, letrozole, or exemestane. AIs work by significantly dropping estrogen levels in the body — by as much as 95% — and this hormonal shift can trigger headaches in some people.

While joint pain, muscle stiffness, and Show Full Answer

Headaches can be a frustrating side effect for some people taking aromatase inhibitors (AIs) like anastrozole, letrozole, or exemestane. AIs work by significantly dropping estrogen levels in the body — by as much as 95% — and this hormonal shift can trigger headaches in some people.

While joint pain, muscle stiffness, and hot flashes are the most commonly discussed side effects, headaches are also reported by some members of the community. Here are a few things that may help manage headaches while on AIs:

- Stay hydrated — dehydration can worsen headaches
- Regular gentle exercise — like walking or yoga, which some MyBCTeam members find helpful for managing AI-related symptoms overall
- Track your headaches — noting when they occur can help your care team identify patterns
- Talk to your oncology team — they may suggest safe pain relief options or investigate other causes

It's always worth bringing persistent headaches up with your doctor, especially to rule out other contributing factors. You should never stop or adjust your medication without speaking to your care team first.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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