Signs You May Have a B12 Deficiency B12 deficiency can cause a variety of symptoms, including fatigue, headaches, depression, pale or yellow skin, mental impairment, and pain and inflammation of the mouth and tongue
[7] (This interaction is not significant when levodopa is combined with carbidopa, as in standard carbidopa/levodopa therapy, because carbidopa prevents peripheral levodopa breakdown.) Another notable interaction involves the chemotherapeutic agent altretamine: coadministration of pyridoxine can decrease altretamines effectiveness and is generally advised against unless specifically directed
It is available in oral forms (liquid, tablets, and capsules)
Sign 6: Feeling Lightheaded or Slightly Breathless Feeling faint when standing or breathless after mild activity might signal a B12 issue
8: McGuire FP, Martinez R, Lenz A, Skinner L, Cushman DM