Has Your Doctor Switched Your Herceptin to Hercessi?

I could see this happening if there was an insurance change and Herceptin was no longer covered. My insurance wouldn’t cover Herceptin and I was on a biosimilar instead.

Did you notice any difference ? I’m apprehensive given that they contracted with a new bio similar

I was only on the biosimilar. There are several biosimilars for Herceptin. Not really sure what differences there are. I would ask your doctor why they picked that particular one.

Cheaper cost for insurance

I’m on Kanjenti biosimilar to Herceptin. Same reason…cost. I’ve been lucky so far with no issues. Going on 5th dose, so time will tell. I need to take it for a year, 21 days apart. Along with Perjeta.

Same here , since it was switched mid treatment , I’ve experienced stronger bouts of non stop diarrhea, exhausting !

Switching from Herceptin to Hercessi is becoming more common as healthcare systems adopt biosimilar medications. Many patients in the HER2+ community have experienced similar changes, often without advance notice from their medical teams. This transition can understandably feel concerning when it happens without discussion. Consider reaching out to your oncology team to understand their reasoning and to address any questions about the switch - they can provide specific information about efficacy and monitoring protocols for biosimilars in your treatment plan.