Tripped across this while trying to confirm that it is what I think it is:
https://www.webmd.com/vitamins/ai/ingredientmono-1114/d-mann...
It is what I thought. It's a glyconutrient and probably basically the same stuff I took for, I'm not sure, maybe a few years.
I have a genetic disorder that predisposes one to infection generally. A friend who was a former nurse bought me glyconutrients as a gift on the condition that I agree to just take it long enough to give it a fair shot.
I did. It helped. I kept taking it on my own dime.
One year for Christmas, she hand packed me low dose, additive-free guaifenesin. That helped me make it through Christmas without a trip to the ER requiring antibiotics for the first time in years.
Those are not the only things she did for me and my health. There were others. She very much helped save my life and start me on the road to recovery.
So, anyway, I was spending $100/mo on glyconutrients and $300/mo on supplements overall. If I missed a single dose of glyconutrients, I began deteriorating.
I was curious why. What the hell was this doing for me?
So I began googling around and I found that a lot of the important stuff in your immune system are classified as glycoproteins.
So I surmised it was providing targeted nutritional support for my immune system so it could crank out "soldiers" for the war effort and keep cranking them out.