which is better tb500 or bpc 157 BPC-157 vs TB-500 After Surgery BPC-157 vs TB-500: research summary
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doi: 10.1001/jamainternmed.2024.2525
The kind that we take is a synthetic version

(1995) Effect of methylcobalamin on diabetic autonomic neuropathy as assessed by power spectral analysis of heart rate variations

Methylcobalamin does not have to be converted by the liver to make it active, so your body can get higher absorption and utilize the benefits of this energy supplement
