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& Wolffsohn, J

The 0.9% concentration is well within the threshold of clinical standards for preservative use in injectable solutions without adverse effects on cell viability or peptide efficacy.[12] Microbial efficacy testing demonstrates no contamination after 30 withdrawals at 4C for up to 60 days.[13][14] 2.2 Stability in Peptide Solutions Research shows that BAC Water preserves the integrity of peptides such as BPC-157, TB-500, and CJC-1295 over multiple cycles of use

This trial the highest dose of retatrutide (12 mg) led to 16.9% weight loss (vs 3.0% with placebo) at 36 weeks

The exception may be efgartigimod, as the pH-dependency of its binding to FcRn entails that it may be released at the fetal side of the placenta upon exposure to physiological pH