b12 injection excess show up in stool Vitamin – Manufacturer ⚠️ Is Your B12 Supplement
Description
FDA.gov
Ferritin below 30 mcg/L suggests iron deficiency

Neurobion ampoule is a combination of three essential neurotropic vitamins (B1, B6, and B12) in high dosage

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Older adults : Aging can affect the stomachs ability to produce stomach acid, which is necessary for B12 absorption
Vegan adults who dont supplement reach functional deficiency within 2 to 4 years of strict avoidance
