There’s a difference between psychoactive and hallucinogenic plants. A hallucinogen inspires visions, changes your visual and spatial perception, and sometimes takes you out of your normal reality and into a markedly different one. Many hallucinogenic plants are considered entheogens, or plants that produce profound spiritual experiences.
Almost all of the most potent entheogens, including psilocybin, ayahuasca, and peyote are illegal. This is in spite of the common scientific understanding that hallucinogens often don’t carry the same addictive potential as other illicit substances. Yet, a few hallucinogenic plants remain unregulated, such as nutmeg, mandrake, and a few common houseplants. There’s a catch, though: The side effects of these plants can be very uncomfortable. In the worst-case scenarios, they may even be outright dangerous.