Chamalla

Chamalla [kə.ˈmɑ.lə] is probably a Colonial plant, root or vegetable, origins unknown.

Extracts from Chamalla are used by Priests, and as an alternative therapy for certain illnesses, including cancer. Chamalla withdrawl is highly acute, and resembles the symptoms of heroin addiction (Fragged). Roslin's dream vision in "Flesh and Bone" appeared to be induced by Chamalla withdrawl.

The benefits of the extract are viewed as questionable by those in the medical profession, as evidenced by Doctor Cottle's reaction to Roslin's request to use it when he confirms her cancer is inoperable.

Chamalla has hallucinogenic effects, desirable in its role as an entheogen, but not in its medicinal applications. In Roslin's case, these have been remarkably prescient (Flesh and Bone, The Hand of God, Kobol's Last Gleaming, Part I).

Notes

Kamala is a small tree native to southeast Asia (Mallotus philippinensis). Its fruit yields Kamala powder, which has two uses:

As a dye which produces brilliant yellows and oranges on wool, mohair, and silk.
As a vermifugal (causing the expulsion of parasitic intestinal worms), generally given mixed with honey, gruel, or treacle, or made into a draught with mucilage of gum acacia and water.

The historical Oracles at Delphi (Pythia) of Greece took their visions from geothermal fumes and chewing laurel leaves. The use of entheogens is common to many other cultures.

Cottle's reticence at the prospect of Chamalla therapy calls to mind current debate on the issue of medical marijuana. However, the two do not greatly resemble each other in other ways:

Medical marijuana is used to manage pain and appetite in terminally ill patients, but has no ability to reverse the spread of cancer. Roslin is not told her condition is terminal, merely inoperable - Cottle would like to to attempt a course of Diloxin therapy. That Roslin rejects this in favor of Chamalla suggests that she believes her condition is hopeless, or that Chamalla may have a concrete ability to treat her illness.
The visions inspired by Chamalla are more akin to LSD or Psychedelic mushrooms, if anything, although their prescience cannot be accounted for.
Marijuana addiction is not well-attested, and the withdrawl symptoms suggested for it are not nearly as acute or severe as those displayed by Roslin in "Fragged".