If spray achieves even 20 to 40 percent of the absorbed dose of injection (a rough analogy from other peptide nasal delivery literature, not a BPC 157-specific number), the effective dose delivered may be far below what rodent studies used
It typically comes with a refillable injection pen
Plus, to learn more about how to check your vitamin B12 status, see: Vitamin B12 Deficiency Test
As a result, clear solution is collected
How Much Does a B12 Injection Cost
J Physiol Pharmacol 64:597612 Krivic A, Anic T, Seiwerth S, Huljev D, Sikiric P (2006) Achilles detachment in rat and stable gastric pentadecapeptide BPC 157: promoted tendon-to-bone healing and opposed corticosteroid aggravation