b12 injection side effects diarrhea Are Shots Safe? Royal Palm Beach Medical Group Vitamin B12 Injection Side Effects
Description
Because the injections are given infrequently with a very small needle (typically a 25-gauge needle is adequate), this is not usually a very unpleasant experience for the cat

However, do not apply the ice directly
Vitamin B12 Recommended intake
If you want deeper hydration and a full nutrient reset, IV therapy might be the better fit

You may experience redness, swelling, or a mild tenderness

That matters because the two compounds work through completely different pathways, and the safety data we have on AOD-9604 alone is already thin
