The doctor's comment is correct, but I swear by this stuff. I was having 2-3 sinus infections a year - the last bout took me out for 2 weeks. My doctor was giving me a massive antibotic shot plus a 14-day run of horse pills. Now when I feel a sinus problem coming on, I use SinuFix and take a decongestant, maybe nasal irrigation if needed. I haven't had a sinus infection since!!
I am an Otolaryngologist (ENT doctor). I had not heard of Sinufix until one of my patients came to my clinic yesterday and told me that since starting Sinufix nasal spray she has completely lost her sense of smell. Review of the ingredients in Sinufix shows that zinc gluconate is one of the main ingredients. Anyone using Sinufix should be aware that there have been several reports of anosmia (complete loss of sense of smell) related to the use of topical zinc containing products.