AKA Rapture, "The Big R" Legal narcotic produced by Sweet Dream Pharmaceuticals. Usually taken in pill form, but when April is discussing the recent strange events in Venice with Charlie, she mentions that "rapture gas" might be responsible, implying it is capable of producing collective hallucinations. When she sees a musician playing badly outside the Roma Gallery, April comments that she can tell he's high on Amathin because the sense of rhythm is the first thing to go. The manual for The Longest Journey mentions "designer drugs that make dreams real", which may be referring to Amathin.