Data from a study indicates that starting with 30-40 micrograms is good for most people: https://tripsafe.org/how-to-take-lsd/#3-use-a-safe-dosage-and-start-wit

Data from a study indicates that starting with 30-40 micrograms is good for most people: https://tripsafe.org/how-to-take-lsd/#3-use-a-safe-dosage-and-start-with-30-40-micrograms https://tripsafe.org/how-to-take-lsd/#3-use-a-safe-dosage-an... It's extrapolated from psilocybin dosage but it seems about right.