what brand bpc 157 does joe rogan use Rogan's Favorite Peptide: FDA panel backs peptide drug

PMID 15950558

Meanwhile, one injection of B12 will vary widely based on health insurance but can easily be more than $50

Mechanisms Evidence shows MOTS-c: (Lee et al., 2015

Bone turnover markers: Osteocalcin (bone formation), CTX (bone resorption)

This small molecule has an outsized biological effect: it upregulates genes involved in tissue repair while downregulating genes associated with inflammation and oxidative stress

Even if you can absorb B12 but have a deficiency caused by diet, a short course of injections would be the best way to bring levels up quickly, so I imagine that's why you were given it rather than tablets