Morbihanine is a fictional drug in Thomas M. Disch's novel 334, Pp. 93-94, that is capable of inducing a controlled hallucination. Disch describes its effects as follows: "During the common hallucinogenic high the self remains a constant while the environment, as in dreams, undergoes transformation. With Morbihanine the landscape that one inhabits, after the initial 'fixing' period., is not much more malleable than our own everyday world, but one is aware of ones slightest action in this landscape as a free, spontaneous, willed choice. It is possible to dream responsibly." (p. 94).