Probably the main ingredient in this is Glutamine or L-Glutamine, and this is just a brand name out of hundreds for this product, which is used to help prevent mucocitis, repair tissue to the mucus lining, help with neuropathy, and help repair tissues, and used probably more often by weightlifters, mainly how I know of it. I don't know about it helping mucus? O took it many years ago, but recently for cancer treatment, it's ok, actually I felt not help, but everyone is different.
I just checked, and is the same brand I have, Glutasolve, plus I have another, which tastes worse.