这个词是什么意思？
An ergot derivative that is a congener of LYSERGIC ACID DIETHYLAMIDE. It antagonizes the effects of serotonin in blood vessels and gastrointestinal smooth muscle, but has few of the properties of other ergot alkaloids. Methysergide is used prophylactically in migraine and other vascular headaches and to antagonize serotonin in the carcinoid syndrome.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D008784 · MeSH 2026。
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