There have been so many “breakthroughs” from eating beets to this new mushroom coffee for all kinds of miracle remedies. Is there any benefit at all and why can’t you make it your self by pulverizing dried mushrooms of the same variety they use into powder and making the coffee yourself?
Doctors in the US never ever prescribe herbs or supplements. On rare occasions when you have a legitimate vitamin deficiency, verified by blood work, they will prescribe medical grade vitamin tablets, from a pharmacy that has actually tested the vitamin content of the product. Vitamin D deficiency is quite common, and while rare, scurvy (vitamin C deficiency) can happen if someone is malnourished.
My doctor has told me on more that one occasion that herbal supplements are completely unregulated, many don’t contain even a bit of the claimed herb, and sometimes have legitimately harmful plants mixed in, as if someone just gathered a bunch of weeds, dried and ground them up.