Goal: Elevate natural GH levels for fat loss, muscle gain, and recovery research
- IGF1-LR3 (extends GH activity, boosts muscle growth, enhances fat loss and recovery)
- Sermorelin (stimulates natural GH release for improved sleep, fat loss, and muscle gain)
- CJC-1295 w/o DAC (promotes natural GH pulses, improves body composition)
- Hexarelin (potent GH secretagogue, enhances recovery, muscle strength, and reduces fat)
- GHRP-2 (stimulates GH release, improves appetite control, supports lean muscle preservation)
Maximize your natural growth hormone production research for fat loss, muscle gain, improved recovery, and deeper sleep.
IGF1-LR3 extends the anabolic effects of GH, accelerating muscle growth and fat loss. Sermorelin, Hexarelin, and CJC-1295 work synergistically to stimulate GH pulses, improve body composition, and enhance energy and recovery. GHRP-2 rounds out the stack by boosting natural GH release and supporting lean muscle preservation while managing appetite and cortisol levels.
The primary concern for peptide researchers today is product purity. Nord-sci guarantees our product purity by performing independent testing of our products and providing those certifications for our customers in our product descriptions.
THIS PRODUCT IS NOT INTENDED TO TREAT, CURE OR DIAGNOSE ANY CONDITION OR DISEASE AND IS NOT FOR HUMAN CONSUMPTION.
ALL PRODUCTS OFFERED ARE INTENDED FOR LABORATORY RESEARCH USE ONLY.
All products are produced using lyophilization (freeze-drying), a preservation method that allows peptides to remain fully stable during shipping for approximately 3-4 months. Once a peptide has been reconstituted with bacteriostatic water, it must be refrigerated to maintain integrity. After reconstitution, peptides typically remain stable for up to 30 days when stored properly.
Lyophilization, also referred to as cryodesiccation, is a specialized dehydration process in which peptides are first frozen and then exposed to a low-pressure environment. This causes the water within the vial to transition directly from a solid to a vapor (sublimation), leaving behind a dry, crystalline white material known as a lyophilized peptide. In this powdered form, peptides may be safely stored at room temperature until they are ready to be reconstituted with bacteriostatic water.
After delivery, peptides should be protected from heat and light. If use is expected within the near future (whether days, weeks, or a few months) refrigerated storage below 4°C (39°F) is generally sufficient. Lyophilized peptides are commonly stable at room temperature for several weeks or longer, making short-term ambient storage acceptable when use is anticipated within that timeframe.
For extended storage, ranging from several months to multiple years, freezing is strongly recommended. Storage at -80°C (-112°F) offers optimal long-term stability and helps preserve peptide structure and quality over time.
For more detailed guidance on peptide handling and storage best practices, please refer to the resource below:
The Growth Hormone Optimization Stack is a research-focused bundle designed for labs investigating GH-axis signaling, pulsatile secretion dynamics, and downstream growth-factor pathways in controlled preclinical and in vitro models. Rather than concentrating on a single mechanism, this stack consolidates several widely referenced GH-category research compounds to support modular experimentation across GH release, receptor signaling, and IGF-related endpoints.
Important positioning for compliance and scientific accuracy: The compounds in this stack are supplied for laboratory research use only. Any “benefit” language in published discussions typically refers to animal models, in vitro assays, or mechanistic hypotheses—not validated outcomes in humans. Research teams should anchor study design to peer-reviewed literature, institutional SOPs, and ethics/IACUC approvals.
The stack includes:
Important Research Notice: Nordsci peptides are supported by third-party analytical testing (e.g., HPLC and mass spectrometry) to validate identity and purity. A Certificate of Analysis (COA) is available per lot to support protocol documentation, QC review, and audit readiness.
THIS PRODUCT SET IS INTENDED FOR LABORATORY RESEARCH USE ONLY. NOT FOR HUMAN CONSUMPTION. NOT INTENDED TO DIAGNOSE, TREAT, CURE, OR PREVENT ANY DISEASE OR CONDITION.
| Included Compound | Typical Unit |
| IGF1-LR3 | 1 mg (see IGF1-LR3 for lot documentation) |
| Sermorelin | 5 mg (see Sermorelin for lot documentation) |
| CJC-1295 (Without DAC) | 5 mg (see CJC 1295 (without DAC) for lot documentation) |
| Hexarelin | 5 mg (see Hexarelin for lot documentation) |
| GHRP-2 | 5 mg (see GHRP-2 for lot documentation) |
| Storage Conditions | Store lyophilized materials at −20 °C or below, protected from light and moisture. Reconstituted solutions should be stored at 2–8 °C and used per institutional standards and stability considerations. |
| Research Use Only | Supplied exclusively for laboratory research use. Not for clinical use, human consumption, or veterinary applications. |
In serious GH research, outcomes are often determined by signal timing as much as signal intensity. GH biology is pattern-dependent, and many research teams differentiate between upstream stimulation (GHRH analogs), secretagogue-driven release (GHRPs/hexarelin-class), and downstream growth-factor signaling (IGF-related endpoints).
This stack is intentionally structured to support that program-level view:
With appropriate experimental controls, this modular build can help labs isolate whether observed shifts are being driven by pituitary activation, secretagogue receptor signaling, or downstream IGF-related pathway engagement.
Standardized sourcing and lot documentation can materially improve repeatability when you’re running multi-arm GH and IGF pathway experiments.
Shop all peptidesIGF1-LR3 is commonly used in research that evaluates IGF-related signaling cascades and tissue-level growth pathways. In controlled settings, investigators may use IGF1-LR3 to interrogate receptor signaling, cellular growth responses, nutrient-partitioning hypotheses, and recovery-adjacent endpoints in preclinical models.
In a stack context, IGF1-LR3 is often treated as a downstream “readout tool” rather than a substitute for GH release dynamics. High-integrity programs typically separate “release” experiments (Sermorelin/CJC/GHRPs) from “downstream signaling” experiments (IGF-related arms) to preserve causal interpretation.
Sermorelin is a GHRH analog used in research exploring pituitary signaling and growth hormone release patterns. Studies may focus on hormone pulse behavior, endocrine feedback loops, and time-based secretion profiles in animal and in vitro systems.
Because many GH investigations hinge on sampling cadence, Sermorelin is frequently used in protocols that prioritize timed collection windows and repeatable pulse mapping across cohorts.
CJC 1295 (without DAC) is commonly positioned as a tool for studying pulsatile GH signaling frameworks, with an emphasis on receptor kinetics and time-dependent GH release behavior. The “without DAC” format is often associated with research designs that prioritize pulse-like stimulation models rather than extended exposure frameworks.
In GH-axis labs, CJC-1295 (without DAC) is often used to compare pulse-structure hypotheses across varying dose timing, stressor models, or metabolic states.
Hexarelin is studied as a potent GH secretagogue in preclinical research programs evaluating GH-axis stimulation, recovery-adjacent signaling, and strength/body-composition associated endpoints. In laboratory design, investigators may evaluate hormone responses, downstream transcriptional changes, and endocrine marker panels to characterize response patterns.
Because high-potency secretagogues can introduce interpretive complexity, rigorous studies typically include baseline and comparator arms, plus controlled sampling windows.
GHRP-2 is widely referenced in research investigating GH release behavior and broader endocrine signaling, including appetite-associated pathways. In structured models, labs may explore dose-response characteristics, signal timing, and endocrine feedback interactions to better interpret downstream outcomes.
For teams differentiating secretagogue classes, it can be useful to benchmark GHRP-2 in separate experiments alongside other related tools (such as GHRP-6) to clarify pathway-specific effects without mixing variables.
1) Separate upstream vs downstream hypotheses. Keep GH-release experiments distinct from IGF-focused experiments unless your goal is explicitly interaction mapping. This reduces ambiguity in the dataset.
2) Treat sampling cadence as a core variable. GH biology is strongly time-dependent. Align collection windows with the mechanism you are testing (pulse mapping vs extended exposure comparisons).
3) Run phased arms before combination arms. Baseline → single compound → dual modules → full stack is a practical sequencing model that protects interpretability.
4) Document lots and COAs like a lab asset. Stack research is more sensitive to input variability. COA archiving and lot tracking improve reproducibility across phases.
Note: The information above is provided as a high-level research reference only. All experimental use must be conducted by qualified personnel in appropriately equipped facilities, following applicable regulations and institutional policies.
Each compound in the Growth Hormone Optimization Stack is supported by lot-specific COA documentation. For labs scaling multi-phase endocrine programs, this is an operational advantage: consistent inputs strengthen data integrity, reduce sourcing-driven variability, and streamline internal QA workflows.
For institutional research use, sourcing should prioritize identity verification, consistent labeling, and reliable COA access. Nordsci Peptides supports research-grade procurement with third-party testing and lot-level documentation to help labs run repeatable endocrine research programs.
IMPORTANT: This stack is sold exclusively for in vitro and preclinical research applications. Not approved for human use or any therapeutic purpose. Researchers are responsible for complying with all applicable regulations and institutional policies governing peptide research.
Run cleaner endocrine studies with research-grade compounds backed by transparent COAs and consistent lot tracking.
Shop all peptides
