how fast will a b12 injection work for my dog Comparison of Oral and Parenteral Cobalamin Supplementation in Dogs – VDI Laboratory, LLC How to give your dog
Description
Possible Side Effects Most clients experience no issues, but mild side effects can occasionally occur, such as: Slight redness or soreness at the injection site Temporary fatigue or lightheadedness Mild bruising (rare) These effects usually resolve quickly

The tablet is placed on the tongue and dissolves within 30 to 60 seconds

[DOI] [PubMed] [Google Scholar] Wong 2006 Wong SSL, Wilczynski NL, Haynes RB

These ranges come from allometric scaling of the animal work plus anecdotal reporting not human trials so anchor your expectations to that
