CJC-1295 with DAC Tracker
CJC-1295 with DAC is a long-acting GHRH analogue whose Drug Affinity Complex extends its presence dramatically. This page covers its half-life, what that timescale means for keeping a usable record, and how it changes the shape of a log — not what to take or how much.
What CJC-1295 with DAC's timing means for tracking
At roughly 8 days, CJC-1295 with DAC has the longest half-life of anything in PepTrack's catalogue — longer than semaglutide. Five half-lives puts clearance at around 40 days.
The DAC — Drug Affinity Complex — is the entire reason. It binds the molecule to serum albumin, which stops it being cleared at the rate the bare peptide would be. Same underlying GHRH analogue, radically different pharmacokinetics.
For a log this means two things. Levels accumulate over many weeks, so early entries and steady-state entries describe very different conditions even when identical. And a single missed entry stays visible in the curve for over a month. Date and interval are the whole story; clock time is irrelevant at this scale.
If you are comparing this against the no-DAC version, see CJC-1295 without DAC — same name in conversation, roughly 384 times the half-life here.
What to capture in the log
- Record the date; the hour does not matter against a 192-hour half-life.
- Expect the first several weeks to look unlike steady state. That is accumulation.
- Note skipped entries — with a ~40-day clearance the gap remains visible for well over a month.
Worked reconstitution example
Purely as arithmetic, using round numbers rather than a recommendation. If a 10 mg vial were mixed with 2 mL of bacteriostatic water, the concentration would be 5 mg/mL. Measuring 2 mg from that would come to:
40 units on a U-100 syringe
10 mg ÷ 2 mL = 5 mg/mL → 2 mg = 0.4 mL = 40 units
Change either the vial size or the water and this number changes completely. Run your own figures in the reconstitution calculator.
Frequently asked questions
What is the half-life of CJC-1295 with DAC?
About 8 days, or roughly 192 hours, making it the longest-acting compound in PepTrack's catalogue. Clearance is near 40 days on the five-half-life convention.
What does DAC actually change?
The Drug Affinity Complex binds the peptide to serum albumin, which slows clearance enormously. Without it the same analogue has a half-life around 30 minutes.
How is CJC-1295 with DAC different from without?
Pharmacokinetically they are barely comparable: roughly 192 hours against roughly 0.5 hours. See the no-DAC page for that side.
How many units is 2 mg of CJC-1295 with DAC?
With a 10 mg vial in 2 mL the concentration is 5 mg/mL, so 2 mg is 0.4 mL — 40 units on a U-100 syringe.
Track CJC-1295 with DAC without the mental math
PepTrack stores the schedule, the log, and the concentration together, and draws the estimated level using the same half-life figures shown above. Free on iPhone, no account required.
Download on the App Store