Hi, welcome to HCM.
Firstly, Migrain headache can not be cured completely. you will have to suffer for life. And it is not curable by homeopathy
You have to be treated meticulously. there is 100% chance of recurrence of the disease after completion of the treatment.
Side effect of one drug should not be a cause of stopping treatment.
So, in my opinion, consult with any general physician for further management.