I have just had my fifth herceptin and I do get stiff for a few days after. I also have a rubbish back (surgery a few years ago for a prolapsed disc) and I struggle mainly to twist and move after standing for a long time.
I think it's normal!!
I am sorry to hear you have been going through this pain and I am sure some of our users will be along soon to share their experiences of Herceptin and offer their advice.
In the meantime please so call our support line at 0808 800 6000 who will be able to talk to you about Herceptin and its side effects and offer some support.
Digital Community Assistant