We can coordinate multiple IVs at the same location for families or groups
Yang WH, Ding CC, Sun T, Rupprecht G, Lin CC, Hsu D, et al
However, some patients receiving high-dose B12 supplementation or injections may experience adverse reactions, though these relate to the treatment rather than the elevated levels: Possible reactions to B12 supplementation (particularly injections): Skin reactions, including acneiform eruptions or rashes Pruritus (itching) Injection site reactions (with parenteral administration) Rare hypersensitivity reactions Non-specific symptoms such as headaches, dizziness, or gastrointestinal disturbances have been reported by some patients taking B12 supplements, but causality is not well established in clinical evidence

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Mark the date you first punctured it so you know when the 28-day use window expires