Source comparison
CJC-1295 With vs Without DAC: Timeline Differences
Plasma GH Half-Life 6–8 days 30 minutes DAC extends duration 200-fold, allowing weekly dosing Injection Frequency Once weekly or twice weekly 2–3 times daily Non-DAC versions require multiple daily injections to sustain GH elevation IGF-1 Elevation Timeline St
This comparison does not assign a generated winner or score.
- Plasma GH Half-Life
- 6–8 days
- 30 minutes
- DAC extends duration 200-fold, allowing weekly dosing
- Injection Frequency
- Once weekly or twice weekly
- 2–3 times daily
- Non-DAC versions require multiple daily injections to sustain GH elevation
- IGF-1 Elevation Timeline
- Steady-state by day 10–14
- Peak within 4–6 hours, returns to baseline by 12 hours
- DAC provides cumulative IGF-1 buildup; non-DAC creates pulsatile spikes
- Time to Measurable Body Composition Change
- 6–8 weeks
- 8–10 weeks (if dosed consistently)
- DAC's sustained exposure reduces timeline variability
- Receptor Desensitisation Risk
- Lower (mimics physiological pulsatility)
- Higher if dosed >3x daily
- Non-DAC at excessive frequency can downregulate GHRH receptors
- Cost-Effectiveness for 12-Week Protocol
- Higher (fewer injections)
- Lower (requires 250+ injections)
- DAC reduces administration burden significantly
- The DAC modification. A synthetic peptide chain that binds reversibly to albumin. Is what makes weekly dosing viable. Without DAC, CJC-1295 degrades within 30 minutes via enzymatic cleavage, requiring multiple daily administrations to sustain GH elevation. This matters because compliance drops sharply in protocols requiring >2 injections per day. Our team has reviewed data from multi-week studies where non-DAC protocols showed 40% higher dropout rates purely due to injection fatigue.