Drug:
Methysergide

Side effects: (14)

Allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives)
Leg cramps when walking
Hip, side, or chest pain
Painful urination
Shortness of breath
Coldness, numbness, or pain in your hands, feet, arms, or legs
Nausea, vomiting, heartburn, or abdominal pain
Diarrhea or constipation
Drowsiness, dizziness, or lightheadedness
Weakness or poor coordination
Insomnia
Rash or facial flushing
Weight gain
Muscle or joint aches or discomfort

Precautions:

under work!

Source:
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http://www.drugs.com/xq/cfm/pageID_0/htm_D00821A1.htm/bn_methysergide/qx/index.htm