8/12/2025

Many NAD Fail Tests

Recent tests of popular NAD+ supplements revealed that half of the products contained hardly any NAD+. For details by brand, see the Quality Concerns section of our NAD Booster Supplements Review. Also see our Top Picks among NAD boosters (including NMN and nicotinamide riboside).

10/01/2026

Can NMN Improve Strength and Metabolism as You Age?

Does taking NMN help with strength, hearing, blood sugar, cholesterol, or body composition in older people? See what the latest evidence shows in our NAD Boosters Review + see our Top Picks for NMN, NAD+, and other NAD boosters.

4/19/2024

NMN and Kidney Injury

New laboratory research suggests that long-term supplementation with NMN might cause kidney injury in older people. Learn more in the Concerns and Cautions section of our NAD Booster Supplements Review.

11/15/2022

NMN Can No Longer Be Sold as a Supplement

The FDA recently took the position that NMN, an NAD booster, cannot be sold as a dietary supplement. For details, see the NAD Boosters Review.

1/20/2025

Nicotinamide Riboside for Cognition?

Did nicotinamide riboside improve memory, attention or cognition among older people with cognitive decline in a recent study? Find out in the Nicotinamide riboside section of our NAD Booster Supplements Review, which includes our Top Picks for nicotinamide riboside.

Also see: Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

5/13/2022

New Nicotinamide Riboside Top Pick

We recently tested and Approved a nicotinamide riboside supplement that provides the most-studied form of nicotinamide riboside and is our new Top Pick for nicotinamide riboside in our NAD Booster Review.

1/13/2021

Nicotinamide Riboside to Slow Aging and Reverse NAD+ Decline?

Nicotinamide riboside, a form of niacin, has been promoted to slow aging, partially based on the belief that it raises NAD+ levels that fall with age. A new study raises doubts about this. Get the details in the Niacin section of our B Vitamin Supplement Review. Also, learn about a concern with taking too much nicotinamide riboside.

2/28/2023

Nicotinamide Riboside for Alzheimer's?

A preliminary clinical study suggested that taking nicotinamide riboside reduced blood markers of Alzheimer’s disease. For details, see the What It Does section of our NAD Boosters Review, which includes our Top Pick among nicotinamide riboside supplements.

Also see: Do any supplements, foods or lifestyle modifications help with brain function, like memory and cognition?

12/12/2023

Nicotinamide Riboside Side Effects

What are the common side effects of nicotinamide riboside (found in Tru Niagen), and is it safe? Find out what a recent study showed in the Concerns and Cautions section of our NAD Booster Supplements Review. Also see our Top Picks for nicotinamide riboside and other NAD boosters.

2/13/2024

Supplement for Cognition?

Does taking nicotinamide riboside improve cognitive or physical function among older people with mild cognitive impairment? See what a recent study showed in the Nicotinamide riboside section of our NAD Booster Supplements Review. Also see our Top Pick for nicotinamide riboside.

Also see our article about supplements for memory and cognition.

6/18/2024

Nicotinamide Riboside for Peripheral Artery Disease?

Does taking nicotinamide riboside improve physical capabilities in people with peripheral artery disease? Find out what a recent study found in the Nicotinamide riboside section of our NAD Booster Supplements Review, which includes our Top Picks among products.

10/08/2026

Nicotinamide Riboside for Parkinson’s?

A large study tested whether nicotinamide riboside eases Parkinson’s symptoms. See the results in our NAD Booster Supplements Review + see our Top Picks for nicotinamide riboside and other NAD boosters.

6/11/2026

Is Niacinamide Worth Considering for Skin Cancer Risk?

High-dose nicotinamide (a common form of niacin) may reduce the risk of skin cancer -- and even the cost of healthcare -- according to a new analysis. Learn more in the Niacin section of our B Vitamin Supplements Review, which includes our Top Picks for niacin/nicotinamide and other B vitamins.

9/19/2025

Niacin May Reduce Skin Cancer?

Taking high-dose nicotinamide (a common form of niacin) may reduce the risk of certain types of skin cancer, according to a new study. Get the details in the Niacin section of our B Vitamin Supplements Review, which includes our Top Picks for niacin/nicotinamide and other B vitamins.

2/03/2023

Niacin & Cancer?

The NAD booster, nicotinamide riboside, might promote growth of existing cancers. Is there similar risk with niacin and niacinamide (nicotinamide)? Find out what evidence suggests in the Concerns and Cautions section of our NAD Booster Supplements Review.

Also, see our Top Pick among niacin supplements in our B Vitamin Supplements Review.

1/20/2025

Nicotinamide for Glaucoma?

Some preliminary research suggests nicotinamide (a form of niacin) may help with glaucoma, but is this recommended? Find out in our B Vitamins Supplements Review, which includes our Top Picks among B vitamin supplements.

10/09/2021

Niagen for Energy?

The maker of Niagen (a supplement containing nicotinamide riboside) was challenged regarding its claim that Niagen boosts energy and performance. See how the company responded in the Nicotinamide Riboside section of our B Vitamins Supplements Review.

4/03/2018

What Niagen Does

Niagen (nicotinamide riboside) has been promoted as an anti-aging supplement. Find out what's been shown in clinical studies, including one published recently, in the Niacin section of the B Vitamin Supplements Review.

7/10/2018

Niagen for Blood Sugar Control?

Niagen, a brand of nicotinamide riboside (a form of niacin), was recently tested in a clinical trial to control blood sugar levels. Get the results in the Niacin section of the B Vitamins Review. (Also see our Top Picks among niacin supplements.)

6/19/2019

NAD+ and Cancer?

Supplements that raise NAD+ levels in the body have been promoted for anti-aging effects. But there is a theoretical risk that they could stimulate cancerous cells, and a CL member reported this week that a supplement containing such an ingredient, nicotinamide riboside, appeared to increase his PSA level. Learn more in the Niacin section of the B Vitamin Supplements Review.

7/20/2019

Is Niagen Safe?

Niagen (nicotinamide riboside) was recently studied for its safety and ability to raise NAD+ in the body. See the results and learn more about this form of niacin (which is also in the product Basis) in the Niacin section of the B Vitamin Supplements Review. Also see our Top Picks for niacin and other B vitamin supplements.

11/15/2022

NAD Booster & Cancer Risk

The NAD booster, nicotinamide riboside, increased the spread of certain aggressive cancers in a recent laboratory study, adding to existing concerns. Get the details in the Concerns and Cautions section of our NAD Booster Supplements Review.

Also, see our CL Answer about vitamins and cancer risk.

3/03/2025

Counterfeit Supplements

Twenty-nine out of 39 supplements containing the "NAD booster" nicotinamide riboside were recently found to contain much less ingredient than claimed, with many containing under 1%. Counterfeit versions of Tru Niagen were also identified. Details are in our NAD Booster Supplements Review, which includes our Top Picks among products.

Also see our article about avoiding counterfeit supplements online.

5/22/2025

Niacin for Skin Cancer

Some research suggests that taking high-dose niacin (as nicotinamide, also called niacinamide) can reduce skin cancer risk. Learn more about this (and an observational study of its safety) in the Niacin section of our B Vitamins Review, which includes our Top Picks for niacinamide supplements and other B vitamins.

6/25/2026

Does an NAD Booster Boost Cognition?

Does the NAD booster nicotinamide riboside help in people with mild cognitive impairment? See the latest findings in our NAD Boosters Review + see our Top Picks among NAD boosters.

7/23/2026

NAD Booster for Boosting Memory?

Did nicotinamide riboside improve memory in people with mild cognitive impairment? See what a recent study found in our NAD Booster Supplements Review + see our Top Picks for NAD boosters.