why do you need a b12 injection Injections Help with Fatigue and Low Energy? The Science Behind Vitamin B12:
Description
stable up to 24 months [4]

Can I Combine Nasal B12 With Other Supplements Or Therapies

Combined with our nurse-practitioner-led skin care services (facials, microneedling, chemical peels, and IPL photofacial), B12 supports the system that produces healthy skin from the inside out

The commercial manufacturing of the vitamin is done through bacterial fermentation
Check the label on your vial: it lists exactly whats inside