Try triptans eg sumatriptan. It's the only drug that is specifically for abortion of migraine. It's not a painkiller and it has minimal side effect.
I've been suffering from migraine for many years...painkillers hv no more effects on me but luckily discovered this new drug...eh it's not actually new coz there r already generic in the market. Ori brand like imigram cost around rm14 a tab!