Just about a year...it wasn't that bad, and I thought I was cured, but after I started feeling better the phobia came right back...it didn't help b/c I never felt s* or n* at all! I got up to pee and then I was getting s* for like 7 hours! It was so weird! So in all actuality it made my phobia worse b/c I never felt s* and now I keep thinking that every little noise in my stomach is bad....