I started this and then my pharmacist and doctor also recommended it on separate occasions. I have been taking it as well as my omega 3 for years and I feel as sharp as ever. In my 60s and going strong.

I love the taste. I am 73 and have been taking this for two years!! Very noticeable difference with my skin and hair!!

I love this product. I've noticed my skin is less dry / flaky since using it. I didn't think my skin was that dehydrated, but I went without Collagen Plus for a few weeks and noticed my skin was much dryer. Great flavor, too!

I have been taking this product for about two months. The energetic feelings, focus, and motivation I have experienced while on this has changed my life. I would recommend this product to anyone looking to get an edge in life. Well worth the price!

I’ve been taking Niacel 400 for over a year now. I have to say I feel like I have more energy throughout the day. Before I started using Niacel, I felt tired and run down all the time. Now, I don’t feel that way at all. I would highly recommend this product.

Some supplements you take and you don't feel a thing. It might be working, then again it might not. You just don't know absent a blood panel. This one, however, I can definitely feel the effects. My memory seems improved, and I just feel sharper on this stuff. This is a permanent addition to my supplement stack.

I felt foggy after COVID and this product was a big help to my mental clarity.

I have taken this for about 6 months and I’m thoroughly impressed. I feel like this has turbo charged my metabolism and I have very high energy levels throughout the day. It’s really cool knowing that I can do something positive for healthy aging and get ahead of getting older. If I could only take one supplement, then I would take this one!

I did extensive research when looking for the best NR product to start taking and the Thorne brand is easily the best. Do your own research and make sure you truly trust the brand you choose. I want to improve my energy level through the afternoon and Niacel 400 does just that. Added bonuses are I see a noticeable improvement in my sleep-wake cycle and weirdly fewer food cravings. Game-changing product.

I’ve become accustomed to flavorless collagen that I generally mixed into coffee or soup, so this one took me a bit by surprise because I didn’t pay attention to the description when I ordered it and wasn’t expecting its sweet, fruity taste, but it’s pleasantly tasty!! It helps me to stay steady on my daily water consumption because it tastes so good, I add it into my pre-workout, I sip on it during my workout… as the weather is warming up it’s becoming a great go-to for hydrating refreshment!

I'd highly recommend this product to anyone experiencing what almost everyone in our culture experiences. Overwork/burnout loads of mental and physical work. This helps keep me sharp without the jitters, and my memory seems better, and brain fog is gone!

I’m taking this for healthy-aging purposes, but a side effect seems to be slightly better brain clarity. Nice bonus!

If you take only one supplement, then it should be this one. NR and Resveratrol are, perhaps, the greatest combo going (according to a prominent Harvard genetic scientist), plus you also get Quercetin and Trimethylglycine as an added bonus.

I started taking ResveraCel over a year ago and I couldn't be happier. Sometimes you take a supplement and you have no idea if it's "working". For me, I take 2 caps with lunch and it powers me through the afternoon. Mental clarity, ability to focus - all dialed up with ReseveraCel. Thank you, Thorne.

I started taking this product because of the Nicotinamide Riboside and all the research with benefits for healthy aging. I didn't expect to feel a difference in my day-to-day life, but I started to notice a trend. On the days when I take this, I am consistently more efficient and productive in my afternoons. If I take it in the afternoon, then I can stay productive until bedtime. As someone who has suffered with low energy from depressive disorder, anything that helps give me more energy is life-changing.