Study suggests α-GPC induction rates of lucid dreams may be no different than placebo

Kern, S., Appel, K., Schredl, M., & Pipa, G. (2017). No effect of α‑GPC on lucid dream induction or dream content. Somnologie, 1-6. Retrieved from http://sci-hub.io/10.1007/s11818-017-0122-8