Bests & Worsts Reviews from Amazon

This product is probably about as close as you can get to the niagen supplements, like Thorne ResveraCel, without actually containing niagen or using the patented process. Nicotinamide is a form of niacin easily processed by the body. And it contains bonus resveratrol. I've only been taking these two weeks, but I've found these supplements give me some mental boost/clarity and physical energy. My skin seems more elastic. I have less appetite (my usual tendency is to over eat) and sleep better. I've lost a couple of pounds. One side effect I get is upset stomach, but the seller/manufacturer claims this will go away with time. Overall, while these supplements are no "miracle cure," I think they are providing some benefit, and I will continue to take them. I'll reevaluate once I've made it through the first bottle. TWO MONTH UPDATE: I still feel that I am benefiting from this product. Stomach upset has diminished. I have less joint pain. I have more energy and mental clarity. Better sleep. Skin feels younger. No additional weight loss.