You have to do your homework. If you just believe whatever you read on the Internet, you will probably be taken to the cleaners. First of all, you should never go for the cheapest product. We used to say back home, “You are not rich enough to buy the cheap stuff.” If is too cheap something is most probably wrong. So that is one thing which should warn you.
It doesn’t necessarily mean you have to buy the most expensive one because you could be buying a more expensive bottle than anything else. But don’t go for the cheap stuff. Second, really check the information. Because to the company, either the manufacturer or the reseller, it doesn’t really matter. If he takes the material and the whole situation seriously he will give you the detailed information on how it’s made, how pure it is, how much you have in the pill, give you some links to the research based on THIS particle of glucan and NOT on the glucan somebody else made, on MY glucan.
If it is there and the information/research sounds good, you most probably have a good product. If somebody is showing information having a yeast glucan and you see the reference for mushroom glucan from Japan, what does it mean? He just took something from the Internet and put it on the web page. Do the homework, be careful and you will end up with the good stuff.
~Dr. Vaclav Vetvicka