Water of Life

From Dune2k.com Wiki

Obtained by drowning a small worm and taking the water in its mouth, it is used to bring a Bene Gesserit to be a Reverend mother. She is to neutralize the drug and gain contact with all her ancesters and their experience.

Origins: Allegedly, Shamanism can found within its traditions the use of a drug which is to put someone into slumber for days. One is to learn enormously during this time, but the chances of dying would be high.