I’ve been using sodium chlorite for many years to prevent common colds, flu, and bacterial infections, and my husband also takes it when needed as well. We’ve never needed antibiotics again since we started using it, and we’re both in our 70s and in great health. I find it disheartening when people criticize a product they have no personal experience with. The two-part kit is inexpensive, and since only a few drops are taken at a time, a single kit can last for months, or even years.