bpc-157 promotes tissue repair Stable Gastric Pentadecapeptide BPC 157 as Therapy After Surgical Detachment of the Quadriceps Muscle from Its Attachments for Muscle-to-Bone Reattachment in Rats The Science of BPC-157 -
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However, therapeutic doses for treating deficiency range from high-dose oral supplements (1,0002,000 g daily) to intramuscular injections of 1 mg, particularly for pernicious anaemia or malabsorption conditions

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Why is there a trend in doctors prescribing the patient the injection

Strengthen Your Bone Health: Studies suggest a link between vitamin B12 deficiency and lower bone density
