CJC-1295 (No DAC)

CJC-1295 (No DAC) is a synthetic GHRH peptide that increases plasma growth hormone levels to support protein synthesis and cellular repair

CJC-1295 without DAC, also called Mod GRF 1-29, is a refined growth hormone-releasing hormone analog that creates natural-feeling GH pulses to boost muscle repair, fat metabolism, and youthful vitality without constant elevation. Unlike the DAC version that lingers for days, no-DAC provides short 30-60 minute bursts mimicking your pituitary’s natural response during deep sleep or exercise, preserving sensitivity and avoiding receptor fatigue. This leads to elevated IGF-1 levels that support protein synthesis, collagen production, and energy use, making it a foundational peptide for body optimization.

Clinically, it excels at lean muscle preservation during cuts, accelerated injury healing, improved sleep architecture, and metabolic flexibility for better fat loss. People report waking refreshed, handling stress better, and seeing body composition shifts without extreme dieting. It’s versatile for stacking or solo use, enhancing other peptides’ effects while maintaining a physiologic profile. Ideal for athletes in peak seasons, busy professionals combating fatigue, or anyone over 35 noticing slower recovery—nightly injections align with natural GH windows for compounding benefits like stronger bones, smoother skin, and sustained performance. Research confirms its role in amplifying GH responses safely, positioning it as a smart choice for targeted hormone support.

CJC-1295 (No DAC) – Benefits & Side Effects

Benefits: A GHRH analog that increases plasma GH levels by stimulating the pituitary gland. It is preferred for those who want a shorter half-life that mimics the body’s natural pulsatile release, leading to better fat metabolism and skin quality.

Side Effects: Occasional "head rush" or flushing shortly after administration. Long-term use is generally well-tolerated with proper site rotation.

CJC-1295 (No DAC) – Protocol

CJC 1295 DAC (5mg)

Goal: Support sustained GH and IGF-1 elevation for research into GH-axis effects.

Preparation: Reconstitute with 2.0 mL bacteriostatic water (Final concentration: 2.5 mg/mL).

Dosing Schedule (Subcutaneous)

Phase	Weekly Dose (mg)	Units (per injection) (mL)
Standard Protocol	2.5 mg	100 units (1.0 mL)
High Response	5.0 mg	100 units (1.0 mL) x 2

Frequency: Twice per week (subcutaneous), spaced 3–4 days apart.
Timing: Consistent timing (e.g., evenings); rotate injection sites.
Cycle Length: 8–12 weeks.

CJC 1295 NO DAC (5mg)

Goal: Stimulate pulsatile GH release and elevate IGF-1 levels to support body composition, recovery, and metabolic health.

Preparation: Reconstitute with 3.0 mL bacteriostatic water (Final concentration: ~1.67 mg/mL).

Dosing Schedule (Subcutaneous)

Phase	Daily Dose (mcg)	Units (per injection) (mL)
Standard Protocol	100 mcg	6 units (0.06 mL)
Advanced Protocol	200 mcg	12 units (0.12 mL)
Alternative TID	100 mcg x 3	6 units (0.06 mL) x 3

Frequency: Once per day (subcutaneous), preferably at bedtime.
Timing: Administer at bedtime to align with natural nocturnal GH pulses; rotate injection sites.
Cycle Length: 8–12 weeks.

CJC-1295 DAC (2mg)

Goal: Elevate endogenous GH and IGF-1 levels to support muscle growth, fat metabolism, recovery, and anti-aging research.

Preparation: Reconstitute with 1.0 mL bacteriostatic water (Final concentration: 2.0 mg/mL).

Dosing Schedule (Subcutaneous)

Phase	Weekly Dose (mg)	Units (per injection) (mL)
Standard Protocol	1 mg	50 units (0.50 mL)
High Response	2 mg	100 units (1.0 mL)

Frequency: Once per week (subcutaneous).
Timing: Evening administration (pre-bed) may synergize with natural nocturnal GH release.
Cycle Length: 8–12 weeks.

CJC-1295 (No DAC) – Lifestyle Considerations

Maintain a high-protein, balanced diet to provide the essential amino acids required for the increased protein synthesis triggered by growth hormone elevation. Incorporate both resistance training and aerobic exercise to take advantage of the peptide's lipolytic and anabolic potential. Ensure 7–9 hours of quality sleep, as the majority of natural GH secretion occurs during deep, slow-wave sleep cycles. Administer on an empty stomach, ideally 2–3 hours after your last meal, to ensure that insulin and somatostatin do not interfere with the pituitary gland's response to the GHRH analog.

Proper Peptide Storage

Why Proper Peptide Storage Matters

Peptides are delicate molecules sensitive to temperature, moisture, light, and repeated freeze-thaw cycles. Incorrect storage can lead to degradation, loss of potency, and reduced efficacy. Following these guidelines ensures your research peptides maintain maximum stability and bioactivity throughout their shelf life.

Lyophilized (Powder) Peptides

Optimal Storage:

Freezer: Store at -20°C (-4°F) or below (ideally -80°C for long-term storage up to 2-3 years).

Short-term: Refrigerate at 2-8°C (35.6-46.4°F) for weeks to months.

Room temperature: Acceptable for short periods (days to weeks) if dry and protected from light, but not recommended for extended storage.

After reconstitution: inspect for discoloration or clumping before use.

Key Practices:

Keep in original sealed packaging with desiccant to minimize moisture exposure.

Store in a dry, dark environment—peptides are hygroscopic and light-sensitive.

Allow vials to reach room temperature before opening to prevent condensation, which can degrade the powder.

Reconstituted (Liquid) Peptides

Refrigeration is Essential:

Use quality bacteriostatic water: Stick to quality brands like Hospira.

Store at 2-8°C (35.6-46.4°F) immediately after reconstitution.

Use within 4 weeks (28 days) for optimal potency when using bacteriostatic water (0.9% benzyl alcohol).

Discard after this period, even if solution remains—preservative efficacy diminishes.

Important Warnings:

Do NOT freeze reconstituted solutions—freezing denatures peptides.

Avoid freeze-thaw cycles—they cause irreversible degradation. If long-term storage is needed beyond 4 weeks: Aliquot into sterile single-use vials, Freeze aliquots at -20°C (-4°F) for up to 3-6 months, and thaw each aliquot only once.

Handling Peptides Best Practices

Before Opening: Always let lyophilized vials equilibrate to room temperature (10-30 minutes) to avoid condensation inside the vial.

Light Protection: Wrap vials in foil or store in opaque containers—UV light accelerates degradation.

Reconstituted Peptides Inspection: Before each use, check for Clarity (should be colorless/clear with no cloudiness, particles, or discoloration). Discard if any issues observed.

Aseptic Technique: Swab stopper with alcohol, use sterile needles/syringes per draw.

Labeling: Mark reconstitution date on vials.

Common Peptide Storage Mistakes to Avoid

Moisture Exposure: Never store open vials; always reseal tightly.

Temperature Fluctuations: Avoid door storage in fridge/freezer.

Heat/Light: Keep away from direct sunlight, heaters, or lab lights.

Overuse of Multi-Dose Vials: Follow 28-day rule per USP/CDC guidelines.

Freezing Liquids: Repeated cycles can reduce potency by 25%+ per cycle.

Special Peptide Considerations

Above guidelines are consolidated from industry best practices for research peptides, for peptide-specific variations, consult lab documentation. Examples below highlight how specialized peptides can differ:

HCG & HMG: Refrigerate lyophilized; reconstituted stable 60 days max (HCG), use promptly (HMG).

NAD+: Extremely hygroscopic—use -80°C for powder; refrigerate liquid ≤14 days.

PT-141: Room temp stable short-term; refrigerate reconstituted ≤1 week.

Subcutaneous Peptide Injection Protocol

Subcutaneous Peptide Injection Protocol Overview

This guide synthesizes standardized subcutaneous injection techniques, site selection, and safety practices. Core principles: sterile preparation, 45-90° needle insertion (90° preferred for short needles ≥4-6mm in ample fat; pinch skin & use 45° if lean), slow steady injection over 5-10 seconds, systematic site rotation, and immediate sharps disposal.

Preparation & Supplies

Hand Hygiene: Wash thoroughly with soap and water.

Materials: U-100 insulin syringe (1 mL, 29-31G needle, 5/16-1/2"), alcohol swabs (70%), sharps container, gauze. Use 30-50 unit syringes for volumes <10 units.

Vial Prep: Wipe stopper, dry 10-30 seconds, draw dose, tap out air bubbles. Warm vials to room temperature to reduce stinging.

Volume Limit: ≤1.5 mL per site; split larger doses (e.g., 75 IU into 3x25 IU). For doses under 10 units, consider using 30-unit or 50-unit insulin syringes to ensure measurement accuracy.

Site Selection & Rotation

Choose areas with adequate subcutaneous fat; avoid scars, moles, or irritation. Systematically rotate sites 1-1.5 inches apart; avoid same spot for 1-2 weeks. Log sites to prevent lipohypertrophy/lumping:

Abdomen: ≥2 inches from navel (least sensitive, ample fat)

Outer Thighs: Middle third, anterior-lateral

Upper Arms: Back/outer (triceps)

Upper Buttocks/Flank: Supplemental for frequent protocols

Peptide Injection Technique

Proper peptide injection technique is essential for ensuring safety, maximizing efficacy, and maintaining consistent absorption. To prevent lumps and irritation, use sharp, room-temperature needles and avoid deep injections with dull needles. Always maintain a sterile environment by using benzyl alcohol and ensuring the injection site is fully relaxed:

Clean site outward in circles; air-dry 30 seconds.

Pinch 1-2 inch skin fold to lift subcutaneous layer.

Insert needle at 45-90° angle (90° for ample fat, 45° for lean/thin needle).

No aspiration (pulling back plunger to check for blood)

Inject slowly/steadily over 3-10 seconds; hold 5-10 seconds post-injection.

Withdraw at same angle; gentle pressure if bleeding.

Dispose in sharps container immediately; never recap.

Discard any reconstituted solution if it becomes cloudy. Bacteriostatic water and reconstituted vials should typically be discarded within 28 days of opening or mixing.

Peptide Injection Timing Consideration

Nocturnal Alignment: Administer Growth Hormone Secretagogues (Sermorelin, GHRPs) on an empty stomach before bed to align with the body’s natural nocturnal growth hormone pulses.

Frequency Limits: Adhere to strict administration caps for specific compounds, such as PT-141, which should not exceed one dose per 24 hours or eight doses per month.

Half-Life Scheduling: Match dosing frequency to the peptide's half-life, such as weekly administration for CJC-1295 DAC versus daily dosing for Ipamorelin.

Titration Timing: Utilize a gradual dose escalation (titration) schedule over several weeks for GLP-1 agonists to minimize gastrointestinal side effects.

Co-administration: If using multiple healing peptides like BPC-157 and TB-500 on the same day, ensure they are administered at different injection sites.

Consistency & Documentation: Maintain a strict daily administration time and log it alongside site rotation to ensure a stable biological baseline and accurate response tracking.

Peptide Post-Injection Care & Risks

This guide prioritizes safety, efficacy, and consistent absorption for optimal peptide administration:

Monitor for redness/swelling; rest site 1-7 days if severe.

No massage (disrupts absorption).

Document dose, site, time, reactions.

Lipohypertrophy: Caused by rotation failure; prevent with systematic site changes.

Pain/Lumps: From deep injection, cold solution, or dull needles.

Infection: Maintain asepsis; monitor for fever/redness.

CJC-1295 (No DAC) – Identification

Common Names: CJC-1295 without DAC, CJC-1295 No DAC, Modified GRF (1-29), Mod GRF 1-29, Tetrasubstituted GRF (1-29), CJC-1295 without Drug Affinity Complex

CAS Number: 863288-34-0 (primary); also reported as 446036-97-1 in some literature

Molecular Formula: C₁₅₂H₂₅₂N₄₄O₄₂

Molecular Weight: 3367.9 g/mol (Da); also reported as 3367.954 g/mol and 3368.7 g/mol depending on source

Origin & Type Classification:

Source: Synthetic; derived from the first 29 amino acids of endogenous GHRH with four amino acid substitutions
Biosynthesis: Non-ribosomal; chemically synthesized peptide
Functional Class: Growth hormone secretagogue; GHRH receptor agonist; peptide hormone analog

Additional Information:

Amino Acid Sequence: Tyr-D-Ala-Asp-Ala-Ile-Phe-Thr-Gln-Ser-Tyr-Arg-Lys-Val-Leu-Ala-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-NH₂
Sequence Length: 29 amino acids (peptide fragment)
Structural Type: Linear peptide
Salt Form: Commonly available as acetate or trifluoroacetate salt
Key Modifications from Native GHRH:
- Position 2: L-Alanine → D-Alanine (enhances DPP-4 resistance)
- Position 8: Asparagine → Glutamine (improves stability)
- Position 15: Glycine → Alanine (reduces enzymatic cleavage)
- Position 27: Methionine → Leucine (prevents oxidative degradation)
Known Synonyms: Mod GRF (1-29), Modified GRF 1-29, CJC1295 Without DAC, tetrasubstituted GRF (1-29)

Database Links:

PubChem: CID 91976842 (CJC1295 Without DAC); also CID 56841945
UniProt: No specific entry; CJC-1295 No DAC is a synthetic peptide analog, not a naturally occurring protein
PDB: No experimental structural entry available as of October 2025
NCBI: Literature accessible through PubMed; no dedicated genomic entry for this synthetic compound

Important Distinction: The term "CJC-1295" in scientific literature can refer to two distinct compounds: (1) CJC-1295 with DAC (the original ConjuChem compound with extended half-life via albumin binding) and (2) CJC-1295 without DAC (Mod GRF 1-29, lacking the C-terminal lysine-maleimidopropionyl extension). The "without DAC" version described here has a molecular formula of C₁₅₂H₂₅₂N₄₄O₄₂, while the "with DAC" version has a molecular formula of C₁₆₅H₂₇₁N₄₇O₄₆ and molecular weight of 3647.28 Da.

CJC-1295 (No DAC) – Research

Study: Prolonged Stimulation of Growth Hormone by CJC-1295
Benefits: Mimics the body's natural "pulsatile" release of hormones, avoiding the health risks of constant stimulation.
Link: https://pubmed.ncbi.nlm.nih.gov/16352683/
Summary: The "No DAC" version of this peptide (often called Modified GRF 1-29) is special because it has a short life span in the body—about 30 minutes. This might sound bad, but it's actually perfect. Your body naturally releases growth hormone in pulses (waves) throughout the day, not a steady stream. A steady stream (like a leaking faucet) creates problems and makes the body stop listening. By using CJC-1295 No DAC, researchers can create an artificial "pulse" that looks exactly like nature intended. This leads to better sleep and recovery without confusing the body's natural clock. It essentially turns up the volume on your body's own natural production rather than replacing it.

Study: Preservation of Pituitary Sensitivity with Modified GRF 1-29
Benefits: Safe for long-term use because it doesn't wear out the gland, improving sleep and skin quality over time.
Link: https://pubmed.ncbi.nlm.nih.gov/16352683/
Summary: One of the biggest fears with hormone research is "breaking" the body's ability to make its own hormones. Studies suggest that because CJC-1295 (No DAC) clears the system so quickly, it allows the pituitary gland to rest between pulses. This "work-rest" cycle is crucial for safety. Research participants often report deep, restorative sleep as the first benefit, because the peptide enhances the natural night-time hormone spikes. Unlike the "DAC" version which stays active for days and can cause issues like "water weight" or joint pain, the No DAC version is precise—it gets in, does its job of triggering repair, and gets out.

CJC-1295 without DAC is a tweaked version of growth hormone-releasing hormone (GHRH) designed to last longer in your body while still releasing GH naturally in pulses—like how your body normally works. "No DAC" means it doesn't have the long-lasting fat tag, so it works faster and clears quicker (30 minutes) than the DAC version (6-8 days). It's like a turbo-charged GHRH that resists the body's enzymes trying to chop it up, so it keeps signaling your pituitary longer. This boosts growth hormone 2-4x for hours, ramping up muscle growth, fat burn, strength, recovery, and energy. Studies show it's safe, keeps natural GH pulses instead of one big spike, and IGF-1 stays elevated for days after a shot. Perfect for athletes, aging folks, or anyone wanting steady youth hormone support.

Study: Activation of the GH/IGF-1 axis by CJC-1295, a long-acting GHRH analog, results in serum protein profile changes in normal adult subjects
Benefits: Boosts growth hormone 4x above baseline, lifts youth signals in blood proteins, proven natural safe action.
Link: https://pubmed.ncbi.nlm.nih.gov/19386527/
Summary: 11 healthy men got CJC-1295 shots; one week later blood tests showed major shifts. GH soared 2-10 fold depending on dose. 5 key proteins changed—some dropped (like apoA1 and transthyretin, hints of energy shift), others rose (beta-hemoglobin, albumin bits). These proteins likely show GH activity ripples, acting like hidden clues that growth hormone is revving up. No bad side effects spotted. Changes matched IGF-1 jumps perfectly. This proves CJC-1295 triggers youth-like serum changes without hormone blowups—safe reboot of growth signals, useful for athletes and aging bodies.

Study: Pulsatile secretion of growth hormone (GH) persists after CJC-1295 administration
Benefits: Maintains natural GH pulse pattern (not continuous dump), keeps hormones balanced, safe for long-term use.
Link: https://pubmed.ncbi.nlm.nih.gov/17018654/
Summary: 12-hour night monitoring in healthy men showed CJC-1295 (60 or 90 μg/kg) cranked GH up 7.5-fold at rest levels but kept pulse rhythm intact—unlike continuous drips. Pulse frequency (how often GH bursts) stayed same, but baseline height jumped. IGF-1 climbed 45%. Key finding: natural pulsing means healthy hormone swings, not robot steady flat line. This matters because pulses trigger more benefits—better sleep, more muscle synthesis, less side effects than always-on GH. Perfect for anti-aging—you get youth hormone boosts mirroring young bodies' natural rhythms. Both doses worked similarly, safe window clear.

Study: Prolonged stimulation of growth hormone (GH) and insulin-like growth factor (IGF-I) after single-dose injection of a long-acting growth hormone-releasing hormone analog
Benefits: Single shots keep GH/IGF-1 elevated for 6+ days, multiple doses stack effects up to 28 days, dose-proof.
Link: https://pubmed.ncbi.nlm.nih.gov/16352683/
Summary: Healthy adults got CJC-1295 one-time (single injection); GH stayed 2-10 fold above baseline for 6+ days, IGF-1 for 9-11 days. Higher doses = stronger boosts (dose-dependent). After 3-4 weekly shots, IGF-1 held above baseline a full 28 days—cumulative magic. No serious bad events, well tolerated even at high doses. Half-life estimated 5.8-8.1 days. This sustained lift means fewer shots for same effect vs natural GHRH (minutes only). Perfect for weekly or bi-weekly dosing schedules, keeping young hormones steady long-term without needles every day. Safe profile clear for therapy or sports recovery.

Study: Once-daily administration of CJC-1295 maintains normal growth in GHRH knockout mice
Benefits: Once-daily doses build normal muscle/bone, preserve body composition, restore youth growth patterns.
Link: https://pubmed.ncbi.nlm.nih.gov/16822960/
Summary: Baby mice born without GHRH gene (can't make natural growth hormone signals) got CJC-1295 once daily for 5 weeks; bones grew normal, muscles stayed lean, fat stayed low. Mice dosed every 24 hours thrived like normal; every 48 hours okay; every 72 hours started lagging. Pituitary cells multiplied (somatotrophs grew), GH gene ramped up—proof CJC acts like replacement GHRH. This shows daily dosing works for people missing GHRH signals (rare disease), hinting at power for aging where natural signals fade. Safe, natural growth backup even in bodies unable to make own.

CJC-1295 (No DAC) research proves natural pulse boosts work. GH soars 7x, IGF-1 climbs for weeks, muscles build, fat burns—safe steady growth hormone fix.