@wews I've been taking Letrozole for a year now. The main side effect I've experienced is night sweats. They were much worse at the beginning, but over time, I think my body has started to adjust.
Trying different brands might help—though it can vary. I switched brands one month and noticed my night sweats got significantly worse, so it might be worth experimenting to see what works best for you.
I also found a helpful solution on Amazon: a cooling blanket from the brand Amelie Home (Q-Max). When a hot flash hits, I use the blanket to cool down. Since I’m already covered by it when I fall back asleep, I don’t wake up later feeling cold. It’s made a big difference in managing the discomfort at night.
I hope any of this helps!