This article has a section on Mummy - apparently it had become an accepted treatment for a wide selection of ailments. http://www.artinsociety.com/the-life-and-death-of-mummy-brow...

Mummy, or “mumia”, was typically the ground-up body, or body parts, applied topically to be rubbed on, or mixed into drinks to swallow. Its medical benefits were proclaimed in standard pharmacopoeia and extensively promoted by physicians, apothecaries and barber-surgeons [18]. By the 16th and 17th centuries it had become one of the most common drugs found in the apothecaries’ shops of Europe [19].

Ground up mummies also made a popular paint colour: Mummy Brown.

http://www.ancient-origins.net/ancient-technology/mummy-brow...