Aid in Digestion Red blood cells play a major role in maintaining gut health, so vitamin B12 deficiency might lead to diarrhoea, nausea, or vomiting in a few cases
The convenient capsule formulation eliminates injection requirements while maintaining therapeutic efficacy
European Food Safety Authority
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For example, a B 12 -deficient state which causes megaloblastic anemia and which may be mistaken for classical PA may be caused by infection with the tapeworm Diphyllobothrium latum , possibly due to the parasite's competition with host for vitamin B 12