@ZipLine-- I've heard that cimetidine works better as a flat wart treatment. It's not as effective on raised warts. I don't think that there is an established dose because the medication was never formulated for this purpose. Did you ask your doctor about the dose?
I think that cimetidine is a hit or miss. It works for some and doesn't work for others. Doctors are not even sure how it works for warts. Somehow it helps the immune system target the HPV virus.