Thanks for writing your query.
I would like to inform you that almost every medicine has some or the other side effects.
Your treating doctor is the right judge to identify the risk reward ratio between the side effects and the benefits of a medicne.
Migriane attacks are triggered by some factors like :-
1. Lack of sleep.
2. Missed meal.
3. Physical or emotional stress.
4. Dairy products.
5. Foods containing MSG.
6. Cigarette or alcohol.
7. Menstural periods in females.
You can avoid the factors triggering your attack and so reduce the intensity and frequency of the migraine
You can take vasograin
for severe attacks of migraine.
You should consult your doctor and can discuss with your doctor for starting anti-migraine medicines like Flunarizine
10 mg at night.
Frequently blocked sinus can be due to allergic reaction
Steam inhalation will be beneficial.
You can take antihistaminic like Fenofexadine
120 mg once a day.
You should also get a Complete Blood Count(CBC) done.
I hope this is helpful to you.