NNMT methylates nicotinamide (a form of vitamin B3) using S-adenosylmethionine (SAM) as the methyl donor
typically 100300 mcg per administration in research contexts Administration: Intranasal spray
[25,59, 60, 61] Tolerization with hCDR1 induced both CD4 + CD25 + and CD8 + CD28 T regs in mice, which suppressed lymphocyte proliferation and autoantibody production
Changes in thyroid function tests are generally not observed, despite theoretical concerns based on animal studies showing thyroid C-cell effects
Laboratory markers include suppressed free T3 with normal TSH (euthyroid sick syndrome), elevated cortisol, and in severe cases, low LH and FSH indicating hypothalamic suppression
Neuro-imaging research found a direct causal link between B12 status, damage to the brain and consequent memory impairment