Peptides DB
Research-centric peptide and protocol reference hub
Inflammation & immune

Best peptides for Immune & Inflammation

KPV, Thymosin Alpha-1, LL-37 (Human Cathelicidin), Thymulin, Thymalin, Thymogen, Vilon, Crystagen, Bronchogen, and VIP are the peptides most-studied for immune-system modulation, anti-inflammatory action, and antimicrobial defense. Each entry below links to its full research profile.

20
peptides matched
Ranked by approved-study count
Glutathione (GSH)Moderate Research

Antioxidant | Cellular health support

Glutathione (GSH) is a tripeptide composed of glutamine, cysteine, and glycine, recognized as the body's primary intracellular antioxidant. It plays a critical role in maintaining redox balance, detoxifying harmful compounds, and supporting immune function. GSH is also involved in various cellular processes, including the regulation of cell proliferation and apoptosis, making it essential for overall cellular health and function.

39 studiesDominant effect: inflammationFull profile →
LL-37Well Studied

Antimicrobial | Immune response

LL-37 is a human cathelicidin antimicrobial peptide that plays a significant role in the innate immune response. It exhibits a range of biological activities, including antimicrobial, immunomodulatory, and wound healing properties. LL-37 is produced by various cells, including epithelial cells and neutrophils, and is known to interact with a variety of pathogens, including bacteria, viruses, and fungi.

32 studiesDominant effect: healingFull profile →

Neuropeptide | Modulates immune responses

Vasoactive Intestinal Peptide | Neuropeptide

32 studiesDominant effect: inflammationFull profile →
MOTS-CEmerging

Metabolic regulation | Male fertility

MOTS-C is a mitochondrial-derived peptide that has garnered attention for its potential roles in metabolic regulation and cellular stress responses. Emerging research suggests it may have implications in various health conditions, including cardiovascular diseases and placental function.

29 studiesDominant effect: metabolicFull profile →
Retatrutide (LY3437943)Moderate Research

Triple Agonist | Weight Loss & Diabetes

Triple GLP-1/GIP/Glucagon Agonist | Weight Loss & Diabetes

23 studiesDominant effect: metabolicFull profile →
Gonadorelin (GnRH)Moderate Research

GnRH | Reproductive hormone regulation

Gonadorelin is synthetic GnRH, a decapeptide that stimulates pituitary release of LH and FSH in pulsatile fashion — used diagnostically and to support the reproductive hormone axis.

22 studiesDominant effect: healingFull profile →
Showing the 6 most-studied of 20 matches

Related reading

Dosing for approved agents comes from the label, not from this site. If you are working out injection volumes, the reconstitution calculator converts mg per vial into syringe units, and how to use peptides covers storage and handling. Neither is a recommendation to use anything.

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Medical disclaimer

Rankings reflect how much indexed research exists, not how safe or effective anything is for you. Nothing here is medical advice. Most peptides on this site are not approved drugs.