glutathione peroxidase helps the body convert what to water Frontiers Concerted action of Glutathione peroxidase-1,

The critical role of the SLC46A1 encoded transporter in intestinal folate absorption is evident in individuals with an inherited form of folate malnutrition (hereditary folate malabsorption, HFM) that results from mutations in the SLC46A1 gene

Pathophysiology 13:171181

IM or IV delivery puts it directly into the bloodstream, oral precursors like NMN have to be converted first, which is variable

doi: 10.1200/JCO.2005.08.066

Tell your healthcare provider if: You or your child has or had repeated movements or sounds (tics) or Tourette's syndrome, or has a family history of tics or Tourette's syndrome

It is absorbed into the oral mucosa and has a high bioavailability