So far so good! I ordered NMN (500mg), Quercetin (250mg) and Trans-resveratrol (250mg) a few weeks ago (I'm 30 years old). The order arrived to Spain in ~8 days, the package looks neat and the products seem to work as intended! For the NMN I have steady energy levels throughout the day, even after going to the gym (before I was exhausted after the gym). The energy NMN provides is 'strange', I thought it would be somewhat like having a coffee or taking caffeine (nervous energy), but actually it's like a calm energy that's always there, it's like you cannot be depleted of energy nor be exhausted (mentally nor physically). Gotta be sure you try spend the energy the NMN provides, the first day I couldn't sleep that much I think because I didn't spend much of this energy.
On another note, the quercetin and Trans-resveratrol also seem to work as I can recover much much faster after the gym. I think this is because of the antiinflammatory properties they have, among other things.
So I recommend this brand for sure and I'm thinking about buying a couple other products for improving my sleep which has been really bad in recent years 👍🏻