Is himalaya mentat a waste of money? why or why not?

Usually a waste of $: There are countless products being sold [maybe a million] to "help your health". Unless a product [the EXACT product, accurately dosed, confirmed in purity] has been proven to be effective by several separate research studies, one doesn't know that it even works. Then, studies have to show the product is not harmful, and does not interact with other common foods, drugs, or medical conditions.

For suckers: A mix of cherry, thyme and pennywort marketed with hokey talk about reversing Alzheimer's and stuff. Don't reward these crooks. A trip to the gym or swimming pool is more likely to clear anybody's cobwebs.