The Dr gave me Furosemide 40mg for swollen feet. After taking it for a couple of days I got a bad reaction. Droning noise in my head and what felt like a panic attack. I was also taking omeprazole and a decongestant at the same time (pseudoephedrine Hydrochloride - Active ingregient) Do you think they reacted to each other. I have stopped taking the Furosemide but still feel a bit panicky. How long before it is all out of my system.