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Wellness 19 May 2026 6 min read How long do B12 injections last
That said, your lab work through Labcorp can be submitted to insurance for reimbursement, and if you have an HSA or FSA, our services typically qualify as eligible medical expenses
Intramuscular B12 Injection Sites Intramuscular (IM) injections yield better results and ensure faster absorption because the substance spreads directly to the muscle tissue
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