Being off topic aside, it seems like the argument, "this is totally useless", "this is a miracle" and quoting studies on NR, R, and Ptero here is a bit short sighted.
Here, anyones reference point, be it the search for longevity, heart health, skin condition, cancer, whatever - determines what is useful. Moreover, studies don't often combine supplements to uncover synergies, but we do. So all our N=1 stories may be unique and still valid. My current experience is that, by taking NR, NAM, and R/C in a certain way, I feel strong and healthy. I'm a sexagenarian, so my results might not work for you, but it is one experience to consider.
I've been on this for a month, but NR for 1.5 yrs. So early AM with food, alternate days, take NR 250 mg or NAM 500 mg - I recently started taking NAM for some actinic keratosis and improving skin health. I didn't want to take both NAM and NR together. I surprising result is a perceived mental rush each morning switching to NAM.
PM - 75 mg / 200 mg Liposomal Resveratrol / Curcumin - I like the effectiveness of the liposomal delivery of these, and taken at this time of day (PM), R and C are most helpful to whole body health and rejuvenation. Seems to be helping with the joints, and endurance.
Or chalk it up to the placebo effect, or some combination of other things I take/do. But for a time, I'll be testing this.