Pregnant women with B12 deficiency are at a higher risk of giving birth to babies with neural tube defects or other developmental issues
[108] In addition, certain drugs may interfere with laboratory tests for the vitamin, such as amoxicillin, erythromycin, methotrexate and pyrimethamine
Additional monitoring for signs of infection, deranged liver function, skin cancer and cardiovascular events should be undertaken[108]
Tangvoraphonkchai K, Davenport A
The plot is from: sciencedirect.com/science/a
When chickens are given a very high dose of vitamin B12, it might interfere with the normal absorption and metabolism of other nutrients, which can result in weight loss, poor feathering, and a negative impact on immune function as well