Whether it's a run-of-the-mill tension headache or a migraine, caffeine can help. That's why it's an ingredient in a lot of popular pain relievers. It can make them as much as 40% more effective. Sometimes you can stop the pain in its tracks just by having caffeine alone.

Is caffeine good or bad for migraines?

Caffeine-containing analgesics are safe and effective in treating migraine attacks, but their consumption should be limited to two days during the week to avoid medication overuse headache.

Why does caffeine help a migraine?

Caffeine tends to constrict blood vessels, which would seem to cause pain by cutting off blood flow. But mid-migraine, caffeine may relieve pain by returning enlarged and painfully distorted arteries back to their pain-free state.