I've been taking another brand's liposomal NAD for a few months and wasn't feeling all that much different. A friend of mine mentioned this company after seeing some info on social media so I decided to give it a shot before I gave up on oral NAD altogether. I'm only a week or so in and I already feel a difference in my energy level and mood. The taste is also MUCH better than the previous one I was using. I'm excited to see what improvements come with longer term use.