When the marrow wakes up potassium disappears B12 replacement triggers a metabolic surge Cells pull potassium inside serum levels crash The recovery phase is actually the danger What Happens If You Inject B12 Wrong: 6 Red Flags Vitamin B12: Urine discolouration could mean you're talking too many supplements Express.co.uk Does a B12 shot change urine color to pinkish? Vitamin B12 Screen Dublin Health Screening Excess B vitamins, especially B2 (riboflavin) and B12, can cause urine to appear bright yellow..this is expected. , ., ., #nursepractitioner #nurse #urology #healthcare #urologynp