For the past four years I have been suffering with near constant post nasal drip. At first it was seasonal, at its very worst this time of year (end of summer into fall), and it was semi-bearable. But now it is constant, pretty much all year round, and it’s like a faucet is constantly turned on. I can’t sleep, I always feel like gagging, and my stomach is always upset. I’ve lost 13lbs in the past few weeks just from not feeling like eating. I have taken everything that my doctors have recommended and everything that they haven’t – Mucinex, Sudafed, Benadryl, Claritin, Tylenol Sinus, etc, etc. Antihistamines help a little but only for a few hours, and because of my job I can’t afford to be tired or loopy during the day. Mucinex has been working the best (taking it every night before bed), but it’s not taking it away. I’m still waking up with the draining and feeling very sick to my stomach. My next step is to go back to the doctor, but they just keep telling me to keep up with the Mucinex. I’m not getting any help from them. Any suggestions? I’m thinking maybe an allergist. Advice would be greatly appreciated.