That's a great question to bring up with your care team! B12 injections are sometimes recommended when levels are low, and low B12 can cause fatigue and nerve-related symptoms — which can overlap with side effects from hormonal therapies like aromatase inhibitors.
While B12 injections may help correct a deficiency and Show Full Answer
That's a great question to bring up with your care team! B12 injections are sometimes recommended when levels are low, and low B12 can cause fatigue and nerve-related symptoms — which can overlap with side effects from hormonal therapies like aromatase inhibitors.
While B12 injections may help correct a deficiency and improve energy levels, it's important to note that they aren't a direct treatment for hormonal inhibitor side effects specifically. Some common side effects of hormonal inhibitors that may feel better once a B12 deficiency is corrected include:
- Fatigue
- Brain fog
- Nerve tingling or numbness
- Weakness
However, hormonal inhibitors can also cause their own side effects like joint and muscle pain, mood changes, and bone loss — and B12 alone may not address those.
Always check with your oncologist before starting any new supplement or injection, as some supplements can interact with breast cancer treatments. Getting nutrients through your diet when possible is often preferred, but when a true deficiency exists, injections can be an effective solution.
May 18
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