Opium

Opium is a narcotic drug in the Twelve Colonies of Kobol. It is legal on Caprica in the years leading up to the Cylon War. Bars such as the Dive Bar in Caprica City provide smokers and offer at least one variety of opium called "Purple".

Fifty-eight years before the Fall, Sister Clarice Willow is a user of Purple, frequently slipping into opium-induced hazes (CAP: "Rebirth"). One such haze causes her to "drunk-dial" Amanda Graystone, however, most of the voice message she leaves is cut off, preventing Willow from exposing her unsavory relationship with Graystone's daughter, Zoe (CAP: "Gravedancing" deleted scene). After they develop a friendship, Willow takes Amanda Graystone to the Dive Bar where the two women smoke (CAP: "Ghosts in the Machine").

Despite its legality on Caprica, Willow's family - particularly Mar-Beth and Olaf - are concerned about her use of Purple and Clarice takes steps towards quitting (CAP: "False Labor").

Decades later, an opium den is referred to directly by Doctor Sherman Cottle while talking to Cally Tyrol (TRS: "The Ties That Bind").

Notes

• It is never established whether or not Colonial opium is derived from the poppy. However, considering the existence of morpha, the Colonial equivalent of real-world morphine, it's likely such a correlation exists.