To deal with such condition, vitamin b12 injection for cats is given
Any stomach disorders, or conditions like pernicious anemia where Intrinsic Factor is lacking, can prevent B12 absorption, as can intestinal inflammation such as Crohns disease if a damaged terminal ileum cannot take up vitamin B12
[1] Removing the needle too quickly can result in medication leakage, reducing the delivered dose
Patients experiencing severe abdominal pain, persistent vomiting, signs of infection, or allergic reactions should seek urgent medical attention
However, a small randomized, double-blind, placebo-controlled trial in 450 pregnant women at high risk for preeclampsia found that supplementation with 15 mg of riboflavin daily did not prevent the condition (61)