CELFULL can be found in Meiya, JD and Tian Mao. Safety is guaranteed, and Sharif also has anti-counterfeiting signs to check.
I found that many people use this brand. Its strong scientific research strength makes it the first enterprise to meet the safety evaluation standard of Tmall International's White Paper on NMN Category Development. They used 18 Nobel Prize-winning directed evolution technology to provide enzymes with 4.5 times absorbance and higher activity through green biosynthesis.
For example, Canada's NPN certification, SGS certification, FDA filing, toxicology test report, Zhejiang CDC 16 month safety assessment report, etc.
NADH is the precursor of NAD+. Phenomenologically, we are all trying to supplement NAD+, and the way to supplement NAD+ is not only NMN, but also NADH. Compared with NMN, the oxidation precursor of NADH, which is easy to degrade, the degradation rate of NADH, the reduction precursor of NADH, is much lower than that of NMN (through computer analysis), and NAD+ can be effectively supplemented.