[ElaineM]

I don't know anything about gall bladder surgery or whether or not gall stones are a side effect of Herceptin, but I had gall stones last year which were diagnosed by an ultra sound.
My M.D. wanted me to have surgery, but I wanted to avoid that if possible, so I asked my naturopath if there was anything else I could do to solve the problem.
He told me to avoid fatty foods, including nut butters and prescribed a supplement called Dissolve GS. I don't remember which company makes it, but if you are interested in learning more about it you can do an internet search on it. It took about 6 weeks to get rid of the gall stones, but I was successful and I no longer have pain or gall stones.
If you want to know if gall stones are a side effect of the drugs you are taking you might want to call the drug companies that make your medicines and ask to speak with a pharmacist. I found drug company pharmacists to be very helpful in answering my questions.
I hope you feel better soon. Take care.