Neither BPC-157 nor TB-500 is an approved medicine in Australia - neither is on the Australian Register of Therapeutic Goods, and the TGA has not evaluated either for safety, quality or effectiveness
Its shipped in powdered form in vials, meaning it needs to be properly reconstituted with bacteriostatic water (which can be purchased on Amazon or from a peptide supplier without a prescription), kept sterile and refrigerated, and ultimately injected with a 1-cc syringe (with the same kind of tiny needle that folks taking insulin use)
Because platelets are cell fragments, they are also good at making a scaffolding or framework for healing in areas of damaged tendons or ligaments
They went looking for human studies of BPC-157 given by injection, or by mouth, or as a nasal spray, or through the skin every route people actually use
Let's quickly break down what you're working with
"Folic acid and vitamin B12 supplementation during pregnancy in a population subsisting on a suboptimal diet"