Although you shouldn't stop taking medications without consulting your doctor first, nondrug treatments may be safer and gentler. For many people, a blend of conventional and alternative approaches may work best.
Here is what the ancient greeks used for migraines and it apparantly worked and is natural and safe and available to anyone willing to try. I have just started it, so will let you know.

The best approach to treatment of migraine attacks is prevention. Supplements can be very useful for this. If a migraine attack has already begun, you'll probably still need to take a prescription medication.

Long-term use of magnesium and calcium can benefit anyone who suffers from migraines. For additional preventive protection, try adding feverfew or, if migraines are especially frequent, the b vitamin riboflavin. If after two months the supplements you're taking do not produce satisfactory results, add vitamin c

magnesium and calcium
most experts attribute migraines to an abnormal widening and constriction of the arteries that supply blood to the brain. Some researchers suspect that one cause may be low levels of the brain chemical serotonin, which regulates mood and serves many other functions. Magnesium and calcium, taken long term, can prevent attacks by keeping blood vessels flexible and by helping the brain process serotonin.
Suggested dose:
400 mg magnesium and 100 mg calcium

feverfew
feverfew, widely used in europe, is one of the most popular natural migraine remedies. It has anti-inflammatory and pain-relieving properties. Several studies have shown that it can markedly decrease both the frequency and severity of migraines when taken over several months.
Suggested dose:
250 mg every morning

riboflavin
riboflavin, or vitamin b2, is believed to help prevent migraines by nourishing the brain's energy reserves. It may be even more effective than feverfew or 5-htp when migraines are ongoing.
Suggested dose:
400 mg every morning. Riboflavin is most effective when taken long term for relief of chronic migraines.

Vitamin c
vitamin c is a powerful antioxidant that may also boost the production of stress-relieving hormones. Excess stress is thought to play a role in triggering migraines.
Suggested dose:
1,000 mg 3 times a day

i am going to give it a try. Will let you know :)