Certain health conditions If you have a stomach or small intestine condition such as celiac disease or Crohn's disease, you may not be able to absorb enough vitamin B12 from food
It depends entirely on your dose stage
Vojtch Petr, Institute for Clinical and Experimental Medicine (IKEM), Czechia Updates Copyright 2022 Comoli, Cioni, Ray, Tagliamacco, Innocente, Caridi, Bruschi, Hariharan, Fontana, Trivelli, Magnasco, Nocco, Klersy, Muscianisi, Ghiggeri, Cardillo, Verrina, Nocera and Ginevri
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