Botox didn't work at all for my 8-12 migraines monthly. I tried Amovig and had severe nightmares. My neurogist indicated that he hadn't heard of that problem. The nightmares were very upsetting me. I would have to get out of bed or awhile until I got settled. on one of the cases I went back to bed only for the nightmare to come back. The nightmares were about people in my family getting killed. I have now tried Emgality for two months. I'm down to 3-4 migraines a month. I've had no side effects.