Carmelo: Get a job micardis dosage strengths This one works both ways: Too much caffeine can trigger a headache and, for heavy drinkers, not getting your fix can also set off your migraines. This might also be the culprit for your weekend headaches if you're guzzling coffee all week at the office and skipping it at home (or sleeping past your morning jolt), Silberstein says.To avoid caffeine-related migraines, Buse recommends people cap their daily intake at 200 mg (about the amount in a cup of coffee). Drinking more than that now? Taper off slowly to avoid withdrawal headaches.