Was researching nasal congestion and CH , and stumbled across this post, i have tried everything including emgality injections, so i gave it a shot and bought the only otc nasal spray in my country that has Oxymetazoline ......... using it for 2 days aborted all my attacks so far, will keep you informed !!!!!! Oh years ago before i was diagnosed i used an ovc nasal spray with cortisone in it and the pain was was so much worse so be careful which spray you get