If you are currently using sublingual or oral forms of B12 and you are getting symptomatic relief then I wouldnt recommend changing up your method of administration
While the specific search TB-500 returns limited PubMed results, thymosin beta-4 itself has 167+ studies in wound healing research alone, plus hundreds more across other domains
Optimising Levels: In cases where B12 levels, despite injections, arent quite reaching the optimal range, a GP might suggest adding a daily oral supplement to top up levels, especially if theres some residual capacity for passive absorption
BPC-157 products sold as research use only are not the same as regulated medicines, and reports note concerns about limited human evidence, inconsistent purity, and unknown long-term safety
PMID: 217 TanakaiAMaiXTakahashiAVierlingJM