Food and fasting before psilocybin — what actually matters?
34 replies · General Discussion
I keep getting conflicting advice about eating before a psilocybin session. Some people say fast completely for 6+ hours. Others say eat a light meal. What does the science say, and what have people actually found works? Does it really affect the experience that much?
The empirical answer: fasting before psilocybin intensifies onset speed and peak intensity. The mechanism is simple — less food in the stomach means faster absorption through the gut. An empty stomach typically produces a faster onset (30–45 min) and a more pronounced peak. With food, onset may be delayed to 60–90 min and peak intensity reduced. This is real and measurable in personal experience. Most clinical trial protocols fast participants for 4–6 hours before sessions.
The nausea question: fasting reduces nausea for most people. The most common source of onset nausea is the mushroom material itself — chitin in the mushroom cell walls irritates the stomach. For dried mushrooms, grinding to powder, making mushroom tea, or lemon tekking all reduce chitin exposure and therefore nausea. A light, easily-digestible meal 2 hours before is fine for most people; a heavy meal right before significantly increases nausea risk.
Personal protocol that works: I stop eating 4 hours before the session, drink water freely until 1 hour before. I make lemon tek (grind dried mushrooms, steep in fresh lemon juice 20 min, then drink as a shot). Almost zero nausea, fast onset, potent peak. After the session, I'm usually ready for something light around hour 5 — fruit, crackers, something simple. Heavy food too soon post-session can feel unpleasant.
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