If you need something for seasonal allergies I strongly recommend L-Histadine in powder form. I used to be dependent on three layers of protection...eye drops, an oral tablet of Zyrtec/etc, and had to keep a back up supply of 25mg pseudoephedrine on hand. Daily L-Histadine got me off ALL of that and barely need anything at all, had worked for me like that for 2-3 years now.