bpc-157 skin tightening Benefits of BPC-157: The Healing Peptide π,
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Essential for fetal neural tube and brain development
doi: 10.1080/08958370802161077

So, the right answer to how long is bac water good for is never until the vial runs out. The better answer is until the documented opened-vial window ends, or sooner if the container no longer matches label condition. Why appearance changes matter Official labeling says the solution should be clear and the seal intact

I believe people should have physical autonomy

Along those lines, a quick online search does not show that the FDA has even classified 5-amino-1MQ as generally regarded as safe, which is the first step in making it available as a supplement

Positive pressure forces contaminants back through the needle opening when you withdraw, compromising sterility across all subsequent doses
