For best results: Take D3 and K2 with food containing some fat Stay consistent with timing Avoid unnecessarily high doses Consider testing if you suspect deficiency If you experience ongoing fatigue, brain fog or symptoms of deficiency, it is worth discussing blood tests and personalised advice with your GP
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Full benefits continue building over several months
Older adults, who often suffer from decreased hydrochloric acid in the stomach, and individuals with gastrointestinal (GI) disorders may have lower absorption of B12.2,4 Vitamin B12 deficiency may be characterized by megaloblastic anemia, fatigue, weakness, constipation, loss of appetite, soreness of the mouth or tongue, and weight loss