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possible side effects from b12 injections How Long Do The Of Last Why do I feel so bad after a B12 injection? Why do I feel worse
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Journal of Endocrinology and Metabolism, 3(12), 715

Available at: (Accessed: February 19, 2023)

Standard Dosing Protocols For B12 injections, theres a standard plan

They're usually administered in the upper arm or thigh, and while it's a quick prick, it's generally well-tolerated
