What other treatments can I try to stop the mucus dripping down the back of my throat that is making me gag, since my current routine of Zyrtec, over-the-counter and prescription nasal sprays, Singulair, allergy shots, a humidifier, and gargling is not working, keeping in mind my allergies to penicillin, Ceclor, and Tussin CF (though Tussin DM is fine)?
Since your current routine of cetirizine (Zyrtec), montelukast (Singulair), and allergy shots isn't quite clearing it, you have a few safe options to discuss with your doctor. Using a saline sinus rinse daily can physically wash away stubborn mucus. Additionally, an expectorant like guaifenesin (the active ingredient in Tussin DM, which you tolerate) can help thin the mucus so it drains easier. Your doctor might also consider a prescription ipratropium bromide nasal spray, which specifically targets excess dripping. Please consult your physician to safely tailor these options to your needs.