Based on proven potency, the NR products manufactured by Renue By Science might be a reasonable choice. On the other hand, Tru Niagen and Elysium are popular because of their associations with leading scientists in the field: Leonard Guarente at MIT and Charles Brenner at U of Iowa.
Consider proven potency vs. reputation:
- Renue by Science (formerly known as Alive By Science) states that it manufactures its NR products in an “FDA approved facility,” and provides a quality control test conducted by a thirty-party, Micro Quality Labs.
- Tru Niagen is a popular brand probably because Charles Brenner, one of the leading scientists in the field of NR and NAD+, is on its Advisory Board. Though the manufacturer provides its own HPLC assay results to show Tru Niagen’s purity, a third-party analysis is missing.
- Elysium makes Basis, which is a combination product of NR and pterostilbene. This combination therapy successfully elevated NAD+ levels as published in Nature in 2017. Elysium’s NR product is popular because the company has an association with Leonard Guarente, a renowned scientist and professor at MIT. Unfortunately, Elysium does not provide a quality control test result conducted by a third-party.