Yellow musk extract

Yellow musk extract was a drug that caused deep sleep for a day or more. The substance was extremely expensive and so strong that just a whiff would make a person light-headed.

History
In the, Jack Ravenwild purchased some yellow musk extract in Ravens Bluff and used it to knock out the slaver Cailek Balathorp, known as Fetterfist.

Appearances

 * Novels
 * Prince of Ravens