bpc-157 safety human case report BPC-157: Miracle Healing Peptide or Hidden Danger? Wolverine Stack: Healing Faster with
Description
These are given either in the muscle (intramuscularly) or under the skin (subcutaneously)

People can also have 'normal' levels of B12 in their blood, but be symptomatic - this is known as a functional B12 deficiency

(cancer survivor, hate needles now)
However, it has been structurally modified to bind to albumin in the bloodstream, which dramatically extends its half-life to approximately six to eight days (with DAC formulation)

Intramuscular administration of vitamin B12 is often preferred for its rapid improvement in patients with severe deficiency or severe neurological symptoms