<s>[INST] I have been treated for seasonal allergies for about ten years, ever since I retired and left Alaska. I lived in central Texas where they had something called Cedar Fever ( sinus drainage, coughing, malaise ) thus my doctor prescribed several types of allergies meds: Singular & Xyzal. Now I m living in AZ and don t suffer as much, but find that I still have sinus drainage because I cough or need to clear my throat frequently. Someone suggested that I take Zertec. I found Alertec that was advertised as a generic Zertec. Will I have these allergies for the rest of my life and what is the best remedy? [/INST] Hi and thanks for using Chat Doctor, Anti-allergic Chat Doctor.  In your case, you are on systemic anti histamines and may be, simply associating a systemic steroid might help. A proper physical examination to exclude minutes, allergic rhinitis or asthma could be of help in orienting or modifying the treatment. A better evaluation of your environment could help identify the allergen causing these symptoms. Consulting an allergologist with much expertise in this domain shall be very helpful. Better options, even in severe cases due exist for severe allergies like immune desensitization regimens. Consulting an allergologist or allergy specialist shall be of great help. Thanks and best regards, Luchuo, MD. </s>