I saw a long ad about an herbal remedy that claims to regenerate hearing, stop tinnitus and clear brain fog. It is called Cortexi at cortexi.colibrim.com. It claims FDA approval with clinical studies. This is impressive but does it actually work? It is all plant based in tincture form. Discussed this with VA ENT. They hadn’t heard of it. Website says it uses Grape Seed, Green Tea, Gymneme Sylvestre and Capsiucum Annuum. I’m still learning what all those are and what they do. Has anyone evaluated this and gotten any of the 3 results claimed? Thanks.