A "revolutionary" new class of migraine preventative drugs that exclusively targets the illness is offering life-changing treatment for millions of Australians who suffer from the condition.

In a report published in the Medical Journal of Australia on Monday, Dr Michael Eller says the new drugs give hope to patients for whom other treatments have failed.

New migraine prevention drugs are offering patients another treatment option. Credit:Shutterstock

“I’ve got many patients who have had significant benefit from it who have been burdened from awful headaches for decades,” the Monash Medical Centre neurologist said.

At least 15 per cent of the population live with either occasional or chronic migraines, the MJA report says. A Deloitte white paper commissioned by pharma company Novartis, which produces one of the new drugs, found the economic cost of migraine to Australia was $35.7 billion.