A microdose of psilocybin is defined as a sub-perceptual Magic Mushrooms dose that is generally between 1/20th and 1/10th of a hallucinogenic dose. This is the level at which a person does not experience any changes in perception or visual or auditory hallucinations. Psilocybin microdosing has become popular in recent years as a way to improve mood, creativity, focus and energy levels.