when do you feel effects of b12 injection Are Shots Safe? Royal Palm Beach Medical Group Feeling worse after B12 Injection:
Description
Most side effects from B12 shots resolve quickly, making them generally well-tolerated for routine supplementation

This is perhaps the most popular application
GHK-Cu frequency stays daily (5/2)

Each method has its own techniques and things to consider

CAN I TAKE A B12 SUPPLEMENT INSTEAD OF AN INJECTION
References Markle HV, Greenway DC