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There are also people with conditions such as pernicious anaemia who will need supplementation with vitamin B12, and this may take the form of injections

[DOI] [Google Scholar] 35.Kesavan K., Kant S., Singh P.N., Pandit J.K

Supplied as a lyophilized powder, this product ensures reliable handling and reproducibility in professional research environments

While some injectable therapies may use this method, most peptide therapies are administered subcutaneously
