I have been using this product for many years, for my eye health, and mainly for the glutathione. Recently, I noticed that there are no amounts given for the various ingredients. They are listed under the umbrella term, "proprietary blend." I called the company and asked for the glutathione amount only. I was promised a call back, but was told that they "do not give out that information." I did not receive a call back. So, I have discontinued using this product. My doctor, as well, was alarmed that the ingredient amounts were not specified and that the product wasn't refrigerated.