Zicam Nasal Spray was recommended to me by a friend to use since my allergies are so bad. I bought the product and used it and I was amazed. It immediately started to clear and open my nasal passageway so that I could breathe. My allergies are so bad that it causes sinus pressure & headaches for me. This product has helped me and I will continue to use it.It may not work instantly for someone else but it did for me. Thanks Zicam.