b12 2 mg injection Vitamin 3000mcg Rx vitamin b12 injections how often
Description
[13] Exposure to light can degrade vitamin B
Sub q should in theory give close to 100% bioavailability, but we really dont know the one PK study never tested it, so theres no measured number and no dosing conversion behind it

B12 promotes healthy skin, hair, and nails, contributing to a more youthful appearance

This is a mixed review
