These are cell and tissue culture findings, not human clinical outcomes, so they don't directly translate to what a person using a topical serum would experience
Definition [edit] Vitamin B 12 is a coordination complex of cobalt, which occupies the center of a corrin ligand and is further bound to a benzimidazole ligand and adenosyl group
Commonly Reported Injection site reactions some redness, swelling, or itching that clears up within 30 minutes
A., Volland, S., Yen, A., Burgess, B
1,000 to 2,000 mcg should be administered daily for one to two weeks, followed by a maintenance dose of 1,000 mcg per day lifelong
Timing within the week is one more lever people fiddle with