If you already are taking 2 and 2, consider switching to 4 capsules all at once before dinner
Funding This study was supported by the Guangdong Medical Science and Technology Research Foundation (A2022479), the Guangdong Basic and Applied Basic Research Foundation (2023A1515011699), the University-Hospital Joint Fund Project of Guangzhou University of Chinese Medicine (GZYZS2024U08), and the Scientific Research Project of Guangdong Provincial Administration of Traditional Chinese Medicine(20251432)
Similarly, preclinical research involving animals must comply with the directives of the Institutional Animal Care and Use Committee (IACUC), adhering to the standards delineated by the Animal Welfare Act (AWA)
Our research library covers it properly, including the studies that found increased slow-wave sleep and the ones that found no effect or the opposite, and I would rather send you there than summarise a split literature in a paragraph on a product page
*NAD+ has a strong safety profile
Using the best forms of nutrients for effective results with no unnecessary additives