Sequence: Gly-His-Lys, with high-affinity Cu(II) binding Plasma levels fall from ~200 ng/mL at age 20 to ~80 ng/mL at 60 Modulates expression of ~4,000 human genes (Pickart et al., 2012) Active in wound-healing, fibroblast proliferation and antioxidant defence assays Sequence H-Gly-His-Lys-OH (Cu complex) Molecular weight 340.39 g/mol (free tripeptide)
For 5-amino-1MQ specifically: Preclinical studies have not prominently described heart rate elevation as a dominant signal The mechanism (NNMT inhibition, NAD+ preservation) does not have the same direct cardiac implications as nuclear receptor agonism Human cardiovascular data at clinically relevant exposures are limited For physicians, the current evidence base does not support a major cardiovascular safety flag, but the limited human dataset means confident statements are premature
Breastfeeding Methylcobalamin is distributed into breast milk in amounts similar to those in maternal plasma, and distribution in breast milk allows for adequate intakes of methylcobalamin by breastfeeding infants
Cognitive difficulties: Memory lapses, trouble concentrating, and mental fog
MoosaMMaartensGGunterHAllieSChughlayMSetshediMet al
