allergic rhinitis
"I had went to urgent care after suffering with the worst sinus infection I have ever had, and I've had a few along with sinus surgeries.  The doc gave me a sample with no preface, just to try it, 1 squirt each nostril twice daily.  I took it at 7:30pm and felt like I had been drugged.  She told me nothing of the somnolent side effects and today its 2:30pm and I am still extremely drowsy, unfocused, and generally feeling like I could fall over."