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“Natural” or Alternative Medications for Migraine Prevention

CLINICAL HISTORY A medical school statistician/epidemiologist has frequent migraines. She is interested in the possibility of a preventative medication. From her research, she concludes that the usual preventative medications reduce headache frequency by about 50% in about 50% of patients, but she is concerned about the potential for side-effects and wonders about the efficacy of alternative treatments. She is also curious about the scientific validity of the studies. Question: What is the efficacy of alternative treatments such as feverfew, petasites, magnesium, ri-