Research Peptides by Category
The full PeptidesDirect catalog, grouped by research category. Every compound is supplied lyophilized with its HPLC purity specification, and lot reports are linked from each product page where available. All products are strictly for in-vitro laboratory research — Research Use Only.
GLP-1 & Metabolic
GLP-1 receptor agonists and metabolic peptides mimic incretin hormones to regulate blood glucose, slow gastric emptying, and modulate appetite signaling pathways. Research focuses on their role in energy homeostasis and metabolic syndrome.
- Semaglutide
- Tirzepatide
- Retatrutide
- Liraglutide
- AOD 9604
- MK-677 (Ibutamoren)
- Adipotide (FTPP)
- AICAR
- Cagrilintide
- Survodutide
- Mazdutide
- Pramlintide
- 5-Amino-1MQ
- SLU-PP-332
- Maridebart Cafraglutide (MariTide)
- Orforglipron
- VK2735
- Petrelintide
- Eloralintide
- Pemvidutide
- Ecnoglutide
- Glepaglutide
- CagriSema (Cagrilintide + Semaglutide)
Growth Hormone
Growth hormone secretagogues stimulate the pituitary gland to release endogenous GH through GHRH or ghrelin receptor activation. These peptides are studied for their effects on body composition, IGF-1 levels, and somatotropic axis regulation.
- CJC-1295 w/DAC
- Mod GRF 1-29 (CJC-1295 No DAC)
- Ipamorelin
- GHRP-2
- GHRP-6
- Hexarelin
- Sermorelin
- Tesamorelin
- GHRH (GH Releasing Hormone)
- GHRP-1
- CJC-1295 No DAC + Ipamorelin Blend
- CJC-1295 No DAC + GHRP-6 Blend
- Tesamorelin + Ipamorelin Blend
Recovery & Repair
Tissue-repair peptides accelerate wound healing, reduce inflammation, and promote angiogenesis through mechanisms such as nitric oxide modulation and growth factor upregulation. Key research areas include tendon, ligament, and gastrointestinal tissue regeneration.
- BPC-157
- TB-500 (Thymosin Beta-4)
- GHK-Cu (Copper Peptide)
- MGF (Mechano Growth Factor)
- PEG-MGF (Pegylated MGF)
- Wolverine Blend (BPC-157 + TB-500)
- GLOW Blend (GHK-Cu + BPC-157 + TB-500)
- KLOW Blend (KPV + GHK-Cu + BPC-157 + TB-500)
- AHK-Cu
Growth Factors
Insulin-like growth factors and mechano-growth factors play critical roles in cellular proliferation, differentiation, and muscle hypertrophy. Research examines their paracrine and autocrine signaling in tissue development and repair.
Reproductive
Reproductive peptides act on the hypothalamic–pituitary–gonadal (HPG) axis to modulate gonadotropin release, fertility signaling, and hormonal balance. Studies explore their applications in reproductive endocrinology research.
Melanocortin
Melanocortin peptides bind MC1R–MC5R receptors to influence pigmentation, sexual function, appetite, and inflammatory responses. Research spans dermatology, sexual medicine, and neuroendocrine regulation.
Cognitive
Nootropic and neuroprotective peptides modulate neurotransmitter systems (including BDNF, serotonin, and dopamine pathways) to support memory, focus, anxiolysis, and neuroplasticity. They are studied in cognitive decline and stress-related research models.
- Semax
- N-Acetyl Semax Amidate
- Selank
- DSIP
- P21 (P021)
- Cerebrolysin
- Dihexa
- FGL (FGLL)
- NAP (Davunetide)
- Trofinetide (NNZ-2566)
- Adamax
Longevity
Anti-aging peptides target mitochondrial function, telomerase activity, and cellular senescence pathways. Research investigates their potential to extend cellular lifespan, improve metabolic efficiency, and protect against age-related oxidative damage.
Immune
Immunomodulatory peptides regulate innate and adaptive immune responses through mechanisms such as antimicrobial activity, cytokine modulation, and T-cell maturation. They are studied in infection, autoimmunity, and immune reconstitution models.
Bioregulators
Short-chain bioregulator peptides (typically 2–4 amino acids) interact with specific DNA sequences to modulate gene expression in targeted organ systems. Developed from Khavinson's research, they are studied for tissue-specific regenerative effects.
- Bronchogen
- Cardiogen
- Cartalax
- Chonluten
- Cortagen
- Livagen
- Pancragen
- Pinealon
- Prostamax
- Testagen
- Vesilute
- Vesugen
- Bonothyrk
Specialty
Specialty peptides encompass unique research compounds with novel mechanisms that don't fit neatly into other categories — including antioxidants, neuropeptides, and experimental sequences under active investigation.
