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Older research also supports that taking 1,000 to 2,000 mcg of B12 is likely just as effective in treating deficiencies as injections
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Obtaining a B12 Injection Prescription To get a vitamin B12 injection prescription, you need to see a doctor
doi:10.1073/pnas.162468699
Furthermore, studies have shown that it strengthens the immune system by replenishing other antioxidants such vitamins C and E (2)
Observed in pilot human work A 2025 IV infusion pilot of BPC-157 in two adults at 10 mg and 20 mg reported no adverse effects on cardiac, hepatic, renal, thyroid, or glucose biomarkers (Lee et al., Alternative Therapies in Health and Medicine, 2025)
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