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DAC (Drug Affinity Complex)

Also known as “DAC”

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A modification (as in “CJC-1295 with DAC”) that lets a peptide bind albumin in the blood, extending its half-life from hours to days. The “no-DAC” version acts more briefly.

The practical consequence of a DAC is dosing frequency: by hitching the peptide to albumin, it stretches the half-life from hours to days, so a with-DAC version may be dosed weekly while the no-DAC version is taken more often. This does not change the reconstitution math, but it heavily influences doses-per-vial planning, since a longer interval means each vial covers more calendar time.

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Peptide dosage guideThe reconstitution formula and a worked example.Peptide libraryProfiles, dosing and reconstitution for 100+ compounds.

More glossary terms

Dead spaceDiluentDoseDoses per vialDownregulationExcipientFrontloadingGhrelinGHRHGHRPGIPGLP-1

Educational reference only — not medical advice. Always follow the guidance of a qualified healthcare professional.