how long does vitamin b12 injection last in your system Injections: Who Should Get Them and Do They Last? Vitamin B12 Injections Clinic Near
Description
However, sublingual bioavailability for peptides is inherently lower than subcutaneous injection because the oral mucosa presents a significant absorption barrier for large molecules

Route: The injection is typically given intramuscularly (IM) into a large muscle, such as the thigh or buttock, or subcutaneously (SC) into the subcutaneous tissue

Sanz-Cuesta T, Escortell-Mayor E, Cura-Gonzalez I et al (2020) Oral versus intramuscular administration of vitamin B12 for vitamin B12 deficiency in primary care: a pragmatic, randomized, non-inferiority clinical trial (OB12)

Individual responses vary based on genetics, baseline body composition, adherence to protocol, and lifestyle factors
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