how fast does a b12 injection start working Long It Take for to Work? Treatment Timeline – Bolt Pharmacy The Truth About B12 Injections:
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HCG should not be used during pregnancy

A recent overview article summarizing AOD 9604 research notes that in isolated chondrocyte cultures, AOD 9604 has been reported to promote proteoglycan and collagen production , and may influence differentiation of adipose-derived mesenchymal stem cells toward osteogenic lineages suggesting a possible role as a tool to study cartilage and bone matrix biology

Chandyo RK, Ulak M, Sommerfelt H, et al

That said, even with triple the vitamin B12 intake, pregnant mothers serum vitamin B12 dipped into the low-to-mid range of normal in this study