US$ 22.02
b12 injection spot Instruction Guide for Intramuscular (IM) Self-injection of Methylcobalamin 1mg/5mg How to self-inject intramuscular vitamin
Description
The specific storage and B12 injection instructions are added to a drug pack

do not shake
PMID 24327038

This means B12 injections are well-tolerated by most people, with minimal risk of side effects

Im 4 weeks in and pleased with the results
