b12 injection dosing for adult Vitamin Dose Adults: 7 Dosage Facts B12 Injection Dose for Adults:
Description
Reaching this state with a compound that has a short 5-Amino-1MQ half life requires careful, consistent, and often frequent dosing

In the shots I tried, I only had one issue where it left a bruise because I got all tense and freaked myself out so I went in the muscle

Rajabally and Martey 2013

Additionally, oral supplements require daily adherence to maintain consistent levels, which can be a challenge for some people