I realize this is anecdotal, but I have a very strong suspicion that my panic attacks may have been caused by the use of Flonase. I started using the Flonase and two days later had the first and worst of what would become 22 panic attacks over 8 days. I was in the ER twice, the first time after managing to call 911 and telling the operator to help me because I was dying. I thought I was having a heart attack. EMTs bashed in my front door to get to me and take me to the ER, but the doctor said my heart attack symptoms and feelings of impending death was typical of panic attack. In the following days I tried to find out as much as I could about panic attack because like most of the general public, I was clueless as to what a panic attack was or what caused them. During my research I came across some references by others who had had attacks they thought might have been caused by the use of Flonase. I was six days into my ordeal by then, but immediately stopped using the Flonase. Two days later, the attacks stopped as suddenly as they had begun. After 22 attacks in 8 days, it’s hard for me to ignore the possible connection.