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Understanding Peptide Dosage vs Concentration
Dosage and concentration are not interchangeable terms. Dosage refers to the amount of active peptide administered per injection, while concentration describes how much peptide exists per milliliter of reconstituted solution. A 5mg vial of CJC 1295 NO DAC cont
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- Dosage and concentration are not interchangeable terms. Dosage refers to the amount of active peptide administered per injection, while concentration describes how much peptide exists per milliliter of reconstituted solution. A 5mg vial of CJC 1295 NO DAC contains 5,000 micrograms of peptide regardless of how much bacteriostatic water you add, but the concentration changes dramatically based on reconstitution volume.
- If you reconstitute that 5mg vial with 2mL of bacteriostatic water, your concentration is 2.5mg/mL or 2,500mcg/mL. If you use 1mL instead, the concentration doubles to 5mg/mL or 5,000mcg/mL. The peptide amount hasn't changed. Only how concentrated the solution is per unit volume. This matters because your injection volume must account for concentration to deliver the correct dose.
- Most research protocols specify dosage in micrograms per kilogram of body weight (mcg/kg), which means you must first calculate your subject's target dose in absolute micrograms, then convert that to injection volume based on your specific reconstitution concentration. For CJC-1295 no DAC, published research protocols typically use 100–200mcg per dose regardless of body weight, while Ipamorelin dosing ranges from 200–300mcg per dose or 1–3mcg/kg body weight in growth hormone secretagogue studies.
- The half-life of CJC-1295 no DAC is approximately 30 minutes, which is why it's classified as a growth hormone-releasing hormone (GHRH) analogue rather than a long-acting variant. The "no DAC" designation means it lacks the Drug Affinity Complex that extends half-life to 6–8 days in the DAC version. This short half-life requires dosing at specific times to coincide with natural growth hormone pulse timing, typically administered before sleep when endogenous GH secretion peaks. Ipamorelin has a similar half-life of approximately 2 hours and acts as a growth hormone secretagogue receptor (GHSR) agonist, creating a synergistic effect when combined with CJC-1295 no DAC. The GHRH analogue stimulates pituitary release while the ghrelin mimetic amplifies the pulse amplitude.
- Real Peptides supplies both compounds as lyophilised powder in sealed vials with verified amino acid sequencing. Each batch undergoes mass spectrometry analysis to confirm purity levels exceeding 98%, and every vial includes a certificate of analysis documenting the exact peptide content. This precision matters because dosage calculations depend entirely on knowing the exact milligram content in your vial. If the stated 5mg is actually 4.3mg due to manufacturing variance, your entire dosing protocol shifts.