Because tumor growth also depends on new blood vessels, several reviews describe this as a theoretical concern that has not been resolved in humans (Sehgal et al., Pharmaceuticals, 2025)
PubMed laboratory research record [PMID: 8090349] PubMed record related to this compound for laboratory literature review
Passive diffusion also occurs throughout the intestinal tract, allowing approximately 1% of oral doses to be absorbed without intrinsic factor
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Pigs Vitamin B12 deficiency is less common in swine, however, it can still occur
It creates a hostile environment for follicles, choking them out over time