Source: Forest of Spirits, pg(s). 27-29
Opium is a highly addictive drug used in Tian Xia and has a price of about 25 gp per dose. It may be smoked with an opium pipe and induces a tired, dreamlike state that affects the mind and body for about an hour. Withdrawal symptoms are particularly nasty for this drug. Nevertheless, due to its popularity, pipes and storage boxes for opium can be very elaborate and costly. The otherwise peaceful nation of Hwanggot is the continent's greatest producer of this drug. Although it is popular in Tian Xia, opium can also be found in the Inner Sea region, in such diverse nations as Numeria, Varisia,; and Cheliax.
- Richard Pett. (2011). Forest of Spirits. Forest of Spirits, p. 27–29. Paizo Publishing, LLC. ISBN 978-1-60125-380-4
- F. Wesley Schneider et al. (2010). GameMastery Guide, p. 237. Paizo Publishing, LLC. ISBN 978-1-60125-217-3
- James Jacobs, Dave Gross, Rob McCreary. (2011). Dragon Empires Gazetteer, p. 26. Paizo Publishing, LLC. ISBN 978-1-60125-379-8
- Tim Hitchcock. (2014). Palace of Fallen Stars. Palace of Fallen Stars, p. 13. Paizo Inc. ISBN 978-1-60125-711-6
- Mike Shel and James Jacobs. (2012). Curse of the Lady's Light Web Supplement, p. 4. Paizo Publishing, LLC.
- Mike Shel. (2015). Turn of the Torrent. Turn of the Torrent, p. 48. Paizo Inc. ISBN 978-1-60125-784-0