← Return to Letrozole and checking estrogen levels

Discussion
2r3b avatar

Letrozole and checking estrogen levels

Breast Cancer | Last Active: Dec 21, 2025 | Replies (96)

Comment receiving replies
Profile picture for windyshores @windyshores

@mandy75 I would love to see any studies. My doc told me I could alternate days but I never did. I totally believe effectiveness is the same (given that 20% is effective and half life allows for that in the day not taken). But I would like to see a study showing that side effects are less.

Jump to this post


Replies to "@mandy75 I would love to see any studies. My doc told me I could alternate days..."

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4740217/
There are more studies out there that I’ve read. I’ve just googled Letrozole every other day and lost myself in the rabbit hole. This will be my next discussion with onco. Hope this helps!