When should you take drugs that stop migraine headaches?
You take these drugs at the first sign of a migraine attack to stop them. They are called "abortive" drugs. They help prevent common symptoms like pain, nausea, and sound and light sensitivity. Some of these should not be used during a migraine with aura, so follow your doctor's instructions.
From: Drugs to Treat Migraine Headaches WebMD Medical Reference
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