i have had breast cancer 3 times now since 2006. Last surgery being last sep 2021. Had Radiotherapy and now on Letrozole. I am also pre diabetic since early 2018. Have just done a finger prick test and my sugar level us up. Do all drugs have this effect or can I change hormone drugs.
Hi
Here's a link to the drugs that Macmillan suggest affect diabetes, it doesn't mention Letrozole. However, if Letrozole is having an impact, then it would be worthwhile following their advice and speak to Diabetes UK/your doctor/your oncologist.
Maybe someone else has experienced this and can pop onto help you.
Best Wishes, Lesley
Hello Deni. Letrozole contains sucrose so it sends the BG level up. I also had a problem with the steroids as they sent my BG up too. When I asked about this the hospital nurse said "Pick your battles. Controlling your oestogen is currently more important than your BG level unless it goes into the teens." I would certainly ask at your surgery if you are concerned. All the best and take care
Whatever cancer throws your way, we’re right there with you.
We’re here to provide physical, financial and emotional support.
© Macmillan Cancer Support 2025 © Macmillan Cancer Support, registered charity in England and Wales (261017), Scotland (SC039907) and the Isle of Man (604). Also operating in Northern Ireland. A company limited by guarantee, registered in England and Wales company number 2400969. Isle of Man company number 4694F. Registered office: 3rd Floor, Bronze Building, The Forge, 105 Sumner Street, London, SE1 9HZ. VAT no: 668265007