Magic mushrooms are rich in the active compound psilocybin, whose activity on consciousness deeply alters cognitive functions, can promote spiritual/mystical experiences and has high biomedical and psychotherapeutic importance. Twenty-eight participants underwent a magic mushroom experience after consuming dehydrated Psilocybe cubensis mushrooms at the dosage of 55.6 mg/Kg (350 μg/kg of psilocybin). Results of subjective aspects of the experience through the Hallucinogen Rating Scale revealed equivalent dosage effects comparable to other studies and similar to those of the psychedelic beverage Ayahuasca. The effects on subjective perception of time duration verified an underestimation of the velocity of temporal passage by participants after substance intake, in which subjects presented longer subjective durations of seconds. Results are discussed in the context of literature produced in the psychopharmacological and cognitive fields.