I really like this product and I can feel the difference when I take it, particularly in the morning on an empty stomach. I suspect the NADH has the more profound effect, but I am not sure. I like the energy I get in any event, and my cognitive function seems to kick into a higher gear when I take it. It’s a great product, but I think its great mostly because of the NADH, as coenzyme Q10 alone does not have this effect on me. This NADH/CoQ10 product gives me great, smooth energy, the result of combining two premium, expensive, synergistic energy ingredients. According to the manufacturer's website (ProHealth), their product contains contains 25 milligrams of pharmaceutical grade NADH per capsule plus 100 milligrams of CoQ10. They do not sell the ‘Panmol’ brand of NADH, which is not pure NADH—it is only 10% NADH. According to the Panmol website: “Panmol NADH contains 10% NADH”. That means that 25 mgs of Panmol NADH actually contains 2.5 milligrams of NADH; and 50 mgs of Panmol NADH contains 5 mgs of NADH. You should do a quick Google on Panmol to confirm. So if you see any NADH containing Panmol NADH, divide the amount of the Panmol in the product by 10. That will give you the actual amount of NADH in their product. Just do your homework when selecting the best NADH/CoQ10 product. Make sure it has exactly the amount of NADH they are advertising. This NADH/CoQ10 product contains the exact amount of NADH stated on the label: 25 milligrams--not 25 or 5o mgs of a brand of NADH, Panmol, that is only 10% NADH by weight. If it did, I would hope that the company would tell me the actual amount of NADH in their product. To state only the gross weight on 'Panmol NADH' is deceptive unless they tell the net, or actual--amount. The others use Panmol, so now you know the truth.