I have been taking pure NMN powder daily for a few years now as part of my anti-ageing supplement. I noticed a spike in energy levels and sharper concentration when I take NMN. myBrainCo. offers high quality, third-party tested NMN without the hefty price tag so it’s great that I can continue my NMN supplement with them. It feels good when I don’t have to sacrifice my health in today’s harsh economy.