Here’s what consumers have asked with answers from Elysium Health staff and previous consumers.
There are quite a few clinical trials and tests reported, but it's been mostly tested on mice and so on. Read here https://www.right-of-assembly.org/nicotinamide-riboside
Basis is a particular health supplement that supports your body to produce a certain enzyme, that slows down aging. So obviously you'd have to take it for as long as you wanted it to be effective!
Basis is the brand. The ingredient is Nicotinamide Riboside something and you can get that direct from Amazon, cheaper. There is also another cheaper brand ChromaDex. Read here https://www.right-of-assembly.org/single-post/2018/05/20/Elysium-Health-One-Simple-Reason-to-Avoid-Basis