This is interesting for me as I have just started taking Reishi mushroom powder in tea form. Reason – I have been having trouble with a mild form of Vertigo which I find very debilitating and frustrating as I have it for weeks at a time. I have been taking it now for a week now first thing in the morning on an empty stomach before I head off to the gym. Result – so far the vertigo has disappeared after two days. I have to say I have stopped all other vitamins at this time so that I can evaluate the powder. I know that it is said to be a physical problem, with crystals in our inner ear but I believe it could also be a deficiency of sorts as well that can cause the swimming of ones vision and head.
Will take this powder for two weeks and see how it goes.