Re: Update: Chang Shan

 Actually had a question about slippery elm and marshmallow. Do they need to be boiled to get their full benefit, or will the powder just mixed in water work for their moisture effect?

It really does not matter.  Boiling will help form a mucilage ahead of time, which is great if you want to soothe a sore throat. But if you are only using it as an intestinal moisturizer then it does not need to be boiled first.

I wonder if the chang shan depletes B-vitamins.

Not sure, there does not seem to be a lot of information available on this herb.