I'm sorry to hear that you're struggling with some side effects of letrozole at the moment.
Both palpitations and breathlessness are known to be side effects of this medication but if you're struggling then do get in touch with your BCN or GP to chat things through.
If you'd prefer to chat things through with one of our team of nurses you're welcome to call them on 0808 800 4040, Monday to Friday 9 am to 5 pm.
