Atogepant for Migraine Prevention: What the First Three Months Look Like

Prevention is measured differently

An acute treatment either stopped the attack or it did not. A preventive is judged on monthly migraine days across months, which is a harder thing to feel week to week and the main reason people stop early.

A realistic timeline

Weeks 1–4. Some reduction in monthly migraine days appears within the first four weeks. Mild nausea, constipation and fatigue are the commonly reported early effects; most settle.

Weeks 4–8. The clearer signal. Comparing this month's migraine-day count against your pre-treatment baseline is the only reliable read — memory of "a bad month" is not.

Weeks 8–12. The point at which a decision can reasonably be made about continuing, adjusting the dose, or trying something else.

Keep a count, not an impression

A simple diary — date, duration, whether acute treatment was needed — turns "I think it is a bit better" into a number. Without one, a 30% reduction is easy to miss and easy to overstate.

What counts as a response

A 50% reduction in monthly migraine days is the conventional threshold in trials. It is not the only outcome that matters: shorter attacks, less severe attacks, and less acute medication are all real improvements even when the day count moves less than that.