urine is red from b12 injection after Excess B vitamins, especially B2 (riboflavin) and B12, can cause urine Vitamin B12: Symptoms, Dosage &
Description
Regular Docs here in the US do not lean towards B12 for pernicious anemia

This compound is suited to laboratory settings where targeted investigation into metabolic signalling is required

Reclaim Your Vitality: If you're experiencing fatigue, low energy, or other symptoms of B12 deficiency, talk to your doctor about vitamin B12 shots

[DOI] [PMC free article] [PubMed] [Google Scholar] 71.Campbell M.S., Ouyang A., Krishnakumar I.M., Charnigo R.J., Westgate P.M., Fleenor B.S

I have already recommended others to this place
