nicotinamide riboside

I found there are two products on the internet, which are actual NAD and not boosters. Renue by Science NAD+ powder https://renuebyscience.com/product/pure-nad-powder-12-grams-nicotinamide-adenine-dinucleotide/ Genex https://a.co/hY9pqGJ I have tried NMN and NR earlier. They help for a bit...