In his book TiHKAL (Tryptamines I Have Known and Loved), the minimum dosage is listed as 250-400 mg, and the duration listed as 4–6 hours.
According to his book TiHKAL (Tryptamines I Have Known and Loved), a typical dose of this substance is between 250-400 milligrams, with effects lasting around 4-6 hours.