how long for cat diarrhea to stop after b12 injection What you're seeing here is a dog being treated with a shot. And this isn't a random site. It's intentional. The area just above the anus corresponds Vitamin B12 for Cats: Overview,
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Laser or light exposure protection reduces photodegradation of cobalamin in solution

It has nothing to do with the hCG hormone ( Most of these studies compared the effects of hCG and placebo injections given to individuals on a calorie-restricted diet
Also, injections are not typically recommended for people without a vitamin B12 deficiency

1 2 3 "Vitamin B12, folate, and the methionine remethylation cycle-biochemistry, pathways, and regulation" (PDF)

Professional Use Only: Must be administered under medical supervision
