Update by user Mar 26, 2021 NeilMed have denied that their Sinus Rinse could have any bad effect on me. I now know that I reacted to the Sodium Chloride as that was confirmed recently when I was prescribed Potassium Chloride pills. On the second day of taking only one half of the prescribed dose my throat started swelling up again. I have told NeilMed this but they just suggested that I see a doctor. There is no point in pursuing this any further as they do not want to know their Sinus Rinse could cause any ill effects at all. I guess for most people this is true, I just happen to be one of the unfortunate people who do have bad reactions to many medicines. Thank you for your continued interest.....Doris Hooton Original review posted by user Feb 23, 2021 I was prescribed NeilMed last year in July because I seemed to have a post nasal drip. After three days I had to stop because my throat was sore and swollen and I couldnt swallow food. I lived on ensure for the next three days for sustenance. My throat eventually eased somewhat and I was able to eat food again. Now after nearly 8 months my throat has still not healed properly. Im left with a croaky voice, and I cannot carry a tune, (I used to sing reasonably well). I definitely speak quieter now and when I have to repeat myself, which is quite often, its an effort and makes my throat sore. My ENT doctor says it couldnt have happened because of NeilMed but when I researched the side effects I realized that NeilMed was definitely the cause. I probably had a reaction to sodium Cloride but up till then I hadnt known that I suffered a reaction to that. At the time I used NeilMed nothing else had changed. I hadnt had and didnt have a cold or anything else that could account for these problems. But now it seems that Im left with permanent problems.