Yeah I use it to prevent, but for one of my offspring (and only one of them) it's a trigger.
But to be fair, the list of potential food triggers the doctor gave me once made me cry, it was literally every food. And also fasting. I'm sure they are trying to help but it always feels like being blamed - you are causing the headaches, just stop doing whatever is causing them!"
Dude. My main migraine triggers were my period, and sleep, relaxing after stress. Not things I could avoid, no matter how much you try to blame it on lifestyle. Menopause plus MHT took care of the main trigger, now it's just that sleep after stress one, much less frequent now, I can often dodge them with some coffee before bed, I guess that keeps everything slightly tense until I wake up, and they don't usually start in the day. Massage only scheduled for mornings, never late in the day. Any cocktail or wine is with supper or earlier never ever ever before bed. Those things do help but don't prevent all of them.