Hormonal Agents: Ipamorelin, CJC-1295, and Related Overviews
Guide to hormonal research agents focusing on GH secretagogues, HGH, HCG, and melanocortin agonists. EU shipping.
The category of hormonal agents covers a broad spectrum of receptors and signaling pathways. Growth hormone secretagogues, recombinant hormones, gonadotropins, and melanocortin agonists act at different points in the endocrine system. These differences make them relevant for research designs because, depending on the model, different regulatory circuits, tissues, and endpoints are in focus.
Every agent listed here is supplied with a Janoshik Analytical Certificate of Analysis.
Category Definition
What does this category cover?
This category includes hormonal research agents with different biochemical classifications. Among them are peptides such as Ipamorelin and Melanotan-2, the protein hormone HGH, and the glycoprotein hormone HCG. What they share is that they act on receptors along the hypothalamic-pituitary axis, in gonadal tissue, or in peripheral organs, thereby influencing hormone secretion or downstream signaling cascades.
Product Range
Highly selective growth hormone releaser that triggers natural GH pulses without raising cortisol or prolactin. Clean GH stimulation with minimal side effects - the most targeted growth hormone peptide available.
2-in-1 growth hormone blend: CJC-1295 + Ipamorelin in one vial. Stimulates natural GH release through two different pathways for amplified, more physiological growth hormone pulses. The gold standard GH research combination.
Recombinant human growth hormone (191 amino acids), identical to the body's own GH. Regulates IGF-1 production, metabolism, body composition, and cellular repair. Available in 10 IU, 15 IU, and 100 IU vials.
Reproductive hormone that mimics luteinizing hormone (LH) activity. Used in research on testosterone production, fertility, and hormonal regulation. Available in 6,000 IU and 15,000 IU vials.
Tanning peptide that activates melanin production in the skin. Stimulates melanocyte receptors for natural UV-free pigmentation. Also researched for appetite regulation and libido effects.
Growth Hormone Secretagogues
Ipamorelin
Ipamorelin is a pentapeptide that stimulates GH release via the ghrelin receptor. Compared to older GHRPs, it is often described as relatively selective. In published models, effects on ACTH, cortisol, or prolactin were sometimes observed to be smaller than with older members of this class, though such differences are not uniformly pronounced across all settings.
Classification for research
For repeated administration and possible desensitization, there is no uniform statement across all models. Appetite-related effects also appear to be frequently smaller with Ipamorelin than with GHRP-6, though they should not be categorically excluded.
CJC-1295 + Ipamorelin
The CJC-1295 + Ipamorelin combination is frequently used in research as a combination of two GH-related signaling pathways. The basic idea is to combine a longer-lasting GHRH-mediated stimulus with shorter GHS-R-mediated pulses.
Combination logic with careful classification
CJC-1295 with DAC is designed for extended duration of action and binds to the GHRH receptor. Ipamorelin acts via the ghrelin receptor and is classified for pulsatile stimulation. Whether the combination acts additively or synergistically in a specific experimental setup depends on the model, dosing, and measurement time points. A categorical superiority over each individual substance cannot be derived from this.
Sermorelin
Sermorelin comprises the first 29 amino acids of native GHRH. Since it acts via the native GHRH pathway, endogenous feedback through the hypothalamus and pituitary remains fundamentally intact. This makes Sermorelin a closer representation of the physiological signaling pathway than exogenous HGH or long-acting analogues.
It was historically approved in the USA as Geref. This makes the agent of interest to researchers who want to study a well-described GHRH-based approach without directly using exogenous GH.
Tesamorelin
Tesamorelin is a modified GHRH analogue. As of the date of this article, Egrifta WR is the current FDA-approved formulation in the USA; approval was granted on 25 March 2025 and availability was communicated for 5 September 2025. The main clinical indication refers to the reduction of excess abdominal fat in HIV-associated lipodystrophy.
Clinical data show consistent reductions in visceral adipose tissue. For glucose metabolism, the assessment is more nuanced: studies described early increases in fasting glucose or HbA1c, while longer-term effects varied depending on the patient population. For cognitive endpoints, there is also no clear, robust signal of a convincing benefit over control.
Direct Hormones and Growth Factors
HGH (Recombinant Growth Hormone)
HGH is recombinant human somatropin and therefore the exogenous hormone itself. While secretagogues are intended to stimulate the pituitary to increase GH release, HGH bypasses this step. This distinction is important for research design because secretagogues require a functioning pituitary regulation, while exogenous HGH does not.
IGF-1 LR3
Modified IGF-1 with extended activity
IGF-1 LR3 carries two modifications relative to native IGF-1: a 13-amino acid extension at the N-terminus and a substitution at position 3. These changes are intended to reduce binding to IGF-binding proteins and extend biological activity. However, exactly how long the effective in-vivo duration in humans is has not been as standardly documented as with approved drugs.
This extended activity window makes IGF-1 LR3 of interest in various research contexts, such as cell culture, tissue models, and studies on IGF-associated growth processes. Statements on pharmacokinetics should be read with caution because the data situation is less uniform than for clinically established agents.
HCG
HCG is human chorionic gonadotropin and acts as an LH mimetic. It binds to LH receptors on Leydig cells and other gonadal tissue, stimulates steroidogenic signaling pathways, and therefore plays an important role in fertility and gonadal research.
Melanocortin Peptides
Melanotan-2
Melanotan-2 is a synthetic cyclic heptapeptide analogue of Alpha-MSH. It activates multiple melanocortin receptors and is therefore studied in different models of pigmentation, sexual function, and appetite regulation.
Broad receptor profile
Via MC1R, Melanotan-2 is linked to melanogenesis. Activity at MC3R and MC4R is relevant for other endpoints, including appetite regulation and sexual function. From this research, Bremelanotide subsequently emerged, developed as PT-141 and directed more selectively at melanocortin-related sexual function endpoints.
Selecting the Right Agent for Your Protocol
Reconstitution required
All lyophilized agents must be reconstituted with bacteriostatic water before use.
All products are supplied with a Janoshik Certificate of Analysis. EU-wide delivery in 2-3 business days.