After dealing with a difficult surgery and recovery (due to an inability to take any pain killers, as they cause me severe nausea), I was dealing with a bad case of fibromyalgia, which resulted in brain fog. After suffering for 6 months, I was convinced I had dementia. I'm in my 70's, so that was really scary. I would forget what I was saying in the middle of a sentence. I started taking Real Mushroom's Lions Mane extract and saw a very quick turn around. My husband and I (80 and 74 years old) now take it daily and (knock on wood) we are doing very well cognitively!! Lots of companies sell low quality mushroom products. It is important that the product use the stems and caps (fruiting bodies), not the roots; and that they utilize the mushroom extract, not a powdered, undigestible form. Real Mushrooms checks all the boxes and provides this kind of high quality product. And it's organic! They also offer discounts on larger quantities and for auto shipments. But on top of that, Real Mushrooms gives such personalized, heart felt service to their customers. I recently made an error in ordering and was so upset because I placed an order that was going to cost me $15.00 more than it should have because of my own mistake. Their office was closed for the weekend. But I emailed them anyway and a really personable woman responded on a Sunday (when the office was closed!) and immediately took care of the situation, issuing a refund and then placing my order for me correctly. I was so impressed and so relieved. Ericka P. was an absolute delight to work with. Thumbs up for this wonderful company.