injection vitamin b12 use Do You Need a Prescription for Injections? Vitamin B-12 Injection - Mobile
Description
And another consideration: temperature fluctuations

Subcutaneous administration of vitamin B12 is sometimes employed, especially in patients with congenital cobalamin metabolism disorders who require high doses to maintain normal metabolic pathways

Methylcobalamin cannot be made by plants or by animals

Only animal foods have vitamin B12 naturally
