There are supplements that seem to bring conscious control of the unconscious within reach for many, but unanswered questions about their safety and efficacy remain, reports Discover.

Finding a drug that opens the door to lucid dreams is no new pursuit: In 1988, one researcher found a food supplement called DMAE might help, though evidence is slim. Currently, a few different compounds meant to treat dementia are in vogue amid the lucid dreaming community. For example, a drug called galantamine is used to treat people with Alzheimer’s disease.