Endocrinology , 146 (7), 30523058
I wound up needing 1 1/2 inch needles, the only downside is they dont give you sizing options when buying their products
Some skin benefits to having enough vitamin B12 include: Increase skin glow and radiance Makes skin less fatigued Reduces dark spots and discoloration Calms dry, inflamed skin, eczema Vitamin B12 Recommended Dosage for Hair Growth & Hair Health According to Healthline, the Reference Daily Intake (RDI) of vitamin B12 is "about 2.4 mcg for adult men and women but slightly higher for pregnant or breastfeeding women, which require approximately 2.6 mcg." More so, lactating women require about 2.8 mcg of vitamin B12
PMID 27300483 American Migraine Foundation
Until safety data exists, avoiding use during these periods is the only prudent approach
It can be taken at any time and doesnt need to be taken with a meal unless your supplement doesnt contain oil, and then youll need to eat it with a healthy fat