Geniux is a nootropic dietary supplement that can be purchased from an online official website but I think that it is also purchasable through Amazon.
As a nootropic dietary supplement, it contains various ingredients that work to help you perform better mentally, improving cognitive functions of the brain, balancing mood, etc. There are many dietary nootropics online and most of them lack clinical evidence of safety and of efficacy so you have to try them out to know if they work or not. Some don't work at all and some offer benefits no better than what you could get from drinking coffee, since there is no evidence that you can use to make a wise decision on whether to buy the product or not, all that you can do is look at the ingredients, read reviews or perhaps comments found online from people that have already used the supplement, basically do your own research and make a decision from that.

So, is Geniux a product that is worth buying? First I visited the official website to find the ingredients. There are many websites for Geniux, I do not know which one is "official". The problem is that there is conflicting information on these websites, one contradicts with another. On a certain website, you find out that Geniux contains Vinpocetine, Bacopa Monnieri, Huperzine A, Alpha GPC, and Tyrosine, on another website the ingredients are not even there, it only claims to have 20 of them, all natural.
Furthermore perhaps a more trustworthy list is the one found on the actual container's label, there are pictures online and it shows only three ingredients with no amounts, unfortunately, they are Caffeine, Eleuthero root extract, and bee pollen, no clinical evidence of course.

I did some research on eleuthero root and bee pollen and they don't have actual clinical evidence of helping with improving cognitive performance, it is believed that they could because of the nutrients in them, like amino acids and so on but there is no actual proof and furthermore in the case of bee pollen it's believed that it probably has no effect on the nutrients and enzymes that could perhaps help the brain, get broken down too fast in the body and don't reach the brain to make a difference or something along those lines.
Caffeine is, of course, a brain stimulant and can trick the brain's adenosine receptors to help performance but that is about it so to answer the previous question, I would not say that Geniux is a product worth buying.