how to inject b12 in dogs self-inject intramuscular vitamin - Overview How-To: Giving Subcutaneous (SQ) Vitamin

This ensures the supplement has what it claims and is free from any contaminants like heavy metals

Constipation is not listed as a side effect in UK product information for vitamin B12 supplements or injections

Below 200 pg/mL is low

Here are seven reasons why you may have a B12 deficiency and could benefit from a B12 supplement/injection: You are older as it becomes harder for the body to absorb B12 as we get older You drink heavily as alcohol can hinder the bodys ability to absorb B12 You had weight loss surgery or another operation that removed part of your stomach You are a vegetarian and dont eat enough eggs or dairy products to meet your vitamin B12 needs You have a Crohns disease , celiac disease or any condition that affects your small intestines You have an immune system disorder such as Graves disease or lupus You take certain heartburn medications such as Neium and Prilosec

Kids need a bit less, but all humans require at least some vitamin B12 each day