The U.S. Food and Drug Administration is moving toward allowing compounding pharmacies to produce more than a dozen injectable peptides that were banned because of potentially significant safety risks, the New York Peptides are surging in popularity. There's little evidence that they work. Q&A: Should you trust trending peptide injections? Peptide math gets confusing fast. PeptiCalc helps with BAC water, mcg, IU, mL, and U 100 syringe mark calculations in one simple free tool. Calculator math only. Always verify your label or prescriber