Acne] Beware of vitamin B12! : r SkincareAddiction Vitamin B12 deficiency, sometimes called cobalamin deficiency, happens when your body is either not getting enough or not absorbing enough vitamin B12 from the foods you eat. Vitamin B12 is an important Bright yellow urine: Colors, changes, and causes Drastic color change in my patients urine after receiving a CyanoKit. : r mildlyinteresting Your urine color can say a lot about your health. The yellow tint we associate with typical urine comes from a pigment called urochrome, a byproduct of breaking down hemoglobin. The lighter B12 Injections for Energy: Benefits and How It Works AZ IV Medics