Parts from a dragon, used in potions.
- hide, blood, heart, liver, horn, claws (FB)
- The going rate for dragon liver just before Harry's first year at Hogwarts was 16 sickles an ounce (PS5, later editions)
- Powdered, the horn of the Romanian Longhorn dragon is highly valued as a potion ingredient (FB)
- There are twelve uses for dragons' blood, as discovered by Albus Dumbledore (PS6), and taught to first-year students (PS14). The twelfth use is oven cleaner (SFC).
Used in many potions, including those discovered by Albus Dumbledore. Dragon Liver is used in the Pottermore version of Doxycide.