oral b12 or injection B-12 Injections – Well Life Medicine Vitamin B12 Injections vs. Supplements:
Description
Having all four feet and teeth to deal with can be overwhelming, even for someone used to giving sub-q fluids

The usual correction is further dilution, a higher ratio of acetic acid, or both, to disrupt the gel matrix and return the sample to a free-flowing liquid

You are injecting a liquid thats going to disperse into the muscle and sit there for a while, so there may be a little bit of soreness related to that. Other common side effects include diarrhea, headache, and swelling (and not only at the site of the injection)
Experimental / Wellness Protocols
