Dietary Sources for Vitamin B12 and D3 Vitamin B12 Red meat (beef, lamb) Poultry Fish (salmon, tuna, sardines) Eggs Dairy products (milk, yogurt, cheese) Fortified cereals and plant-based milks Vitamin D3 Sunlight exposure (primary source) Fatty fish (salmon, sardines, mackerel) Egg yolk Cod liver oil Fortified dairy and cereals Despite these sources, multiple studies show that diet alone often fails to meet optimal levels, making vitamin d3 and b12 together supplementation common
Headache with weakness, numbness, difficulty speaking, or facial asymmetry
For autoimmune patients especially, this precision matters because unexpected side effects or poor response can complicate disease management
A deficiency in Vitamin B might be the reason
Figure 1 : The biliary system