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The first pump implanted in the first patient did not work
Sterile water for injection can be used for single-dose reconstitutions, but it lacks the bacteriostatic preservation that allows multi-dose use
Specific groups of people need to take vitamin B12 shots, such as Vegetarians and Vegans, older adults, individuals with gastrointestinal conditions, people with pernicious anaemia, pregnant and breastfeeding women, and individuals with symptoms of deficiency
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The same discussion also raised a broader supply chain point: if a small number of upstream manufacturers supply most downstream labs and vendors, then a single finishing-stage issue could propagate across multiple brands
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