More is not better with this stack
Only people with vitamin B12 deficiencies should take oral B12 supplements (thats about 6 percent of the US population under age 60)
Treatment of Pigmentation and Skin Health: Vitamin C is known for its role in promoting skin brightness, reducing pigmentation, and improving skin texture
Notably, individuals at the extremes of age, both infants and the elderly, as well as those with pre-existing comorbidities, particularly cardiopulmonary disorders, are at markedly increased risk (490)
What surprises them is that a scar they have had for three years starts fading, or a patch of pigmentation that has not moved in two years begins to clear
PubMed laboratory research record [PMID: 13859454] PubMed record related to this compound for laboratory literature review