How Long Does It Take For Botox To Work For Migraines. No, botox for migraines does not require any downtime. The fda approves the use of botox to treat chronic migraine in adults who are age 18 or over.
Botox is approved to be used in adults to prevent chronic migraine headaches that occur on 15 or more days per month and that last for at least 4 hours. Most patients begin to notice an effect three to five days after their injections, with full results becoming visible after 14 days. However, it is effective and generally well tolerated for the prevention of chronic migraine.
The results, which should be noticeable within seven to 14 days, last for between 10 and 12 weeks.
You should not expect chronic migraine to improve properly in less than 4 weeks. We talked with a few experts to find out how long it takes for botox to work. Botox injections are performed at the migraine institute, and patients can return home and perform everyday activities immediately after a botox treatment. At least 8 of the headache days must be associated with migraine.