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Either way, ensuring that you are aware of the type of Vitamin B12 is important when receiving Vitamin B12 injections so that you know if you react to one type or have a pleasant or unpleasant reaction to one form of Vitamin B12, you will know how to respond for future injections
Alimentary Pharmacology & Therapeutics, 17 (4), 595-601
doi:10.1186/s12929-017-0390-4
Both increase collagen production but through different mechanisms and with different tolerability profiles
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