IVE BEEN GETTING CLUSTERS FOR 5 YEARS NOW IM EPISODIC I WANNA KNOW WHAT I CAN DO AS A PREVENTATIVE , I HAVE 0XYGEN THAK G-D FOR ABORTING ATTACKS BUT WHAT CAN I DO TO GET ME OUT OF THIS HORRIBLE CLUSTER OF 3 -5 TIMES A DAY IVE HEARD ABOUT VERAPMIL BUT NEED ADVISE HOW TO GO ABOUT THIS AND IF ITS BEST FOR ME