What is the cost? From my research Methysergide is very sensitive to air and once the vial is open you have only about 24 hours before it begins to deteriorate. Is it a liquid or powder? I located a source in Boston, MA but the cost is too high (4mg for about $80; delivered overnight). They are not a compounding pharmacy though, they are a chemical supplier for bio research. They have about 20 different substances that hit up the necessary receptors (but I wouldn't recommend anyone mess with the research chemicals).