Brief Answer:
Switch to migraine prophylaxis
Detailed Answer:
Hi Sir,
Vasograin is a good drug but it has to be consumed during an attack.
Instead I suggest you to go for a migraine prophyalxis with Propanolol or Flunarazine after discussing with your doctor/Neurologist. This will reduce the severity and the frequency of migraine episodes drastically and in few months you can be free from it. Also note down the trigger attacks that cause the headache like lack of sleep, delayed meal, dehydration etc and try to avoid them.
It is not safe to take so much of vasograin in a month.