Fatigue or drowsiness Due to its role in regulating melatonin and circadian rhythms, some may feel more tired initially
In summary, riboflavin (vitamin B2) is essential for the biochemistry of the nervous system, functioning as a cofactor in redox reactions, supporting ATP production, enhancing antioxidant defense, and promoting overall cellular health (47, 48)
For instance, one small study demonstrated that individuals with premature hair graying had lower vitamin B12, folate, and biotin levels than control subjects without premature gray hair (13)
doi:10.1002/lary.21851
GHK-Cu (Glycyl-L-Histidyl-L-Lysine-Copper) is a naturally occurring copper peptide found in human plasma, saliva, and urine
I have only been taking it for 3 weeks and it seems to help a little but time will tell