is bpc 157 approved by fda are bpc-157 and tb-500 BPC-157 vs TB-500: Mechanism & Research Comparison Regulatory Alert: The Legal Status

A preclinical pilot study in human patients with chronic pain episodes found, that DSIP significantly reduced pain perception, also improved mood by reduction of depressive states, and that it may potentially be of interest for research into physiological addiction on pain medications, as it was observed to reduce withdrawal symptoms that occurs after discontinuation of long-term analgesic treatment

This means the science is still developing, and consumers must approach with caution

Pokorny, G

Injecting within a 2-3 hour window of your usual time is ideal, but a few hours difference has negligible pharmacological impact given the 6-day half-life