What are the best peptides for immune support?

Based on current research, the top peptides for immune support include LL-37, Thymalin, Octreotide and 1 more. Each has a different evidence level and mechanism of action. Check individual peptide profiles for detailed research citations.

Are any immune support peptides FDA approved?

Yes, 2 peptides in the immune support category are FDA approved: Octreotide, Lanreotide. The remaining peptides have varying levels of preclinical or clinical evidence.

How are peptide evidence levels determined?

PeptideScholar uses a four-tier evidence grading system: Level A (FDA Approved) indicates robust clinical evidence and regulatory approval. Level B (Human Studies) means human clinical data exists but the peptide is not FDA approved for this indication. Level C (Preclinical) means only animal or in vitro studies are available. Level D (Limited Data) means very limited or no published evidence exists.

Best Peptides for Immune Support

Peptides involved in immune modulation and antimicrobial defense. Includes LL-37 and Thymalin.

Approved Category Routing

Approved entries in the Immune Support category

Octreotide

Octreotide is currently modeled on this site as an approved treatment path for: Acromegaly; carcinoid tumors; vasoactive intestinal peptide tumors (VIPomas); control of symptoms related to metastatic neuroendocrine tumors. Brand names in the current dataset: Sandostatin, Sandostatin LAR Depot.

Lanreotide

Lanreotide is currently modeled on this site as an approved treatment path for: Unresectable, well- or moderately-differentiated, locally advanced or metastatic gastroenteropancreatic neuroendocrine tumors; acromegaly. Brand names in the current dataset: Somatuline Depot.

Validation Note

This block reflects the site's current structured treatment data and internal routing logic. It does not replace checking current labeling, payer rules, or local prescribing conditions.

View Octreotide routing View Lanreotide routing Use provider matcher

Peptides

FDA Approved

Preclinical

LL-37

Immune SupportNot Approved

LL-37 (also written as ll37 or ll-37) is the only cathelicidin antimicrobial peptide found in humans. It plays a crucial role in innate immu...

Evidence CView Details

Thymalin

Immune SupportNot Approved

Thymalin is a synthetic dipeptide (glutamyl-tryptophan) originally derived from calf thymus extract. Developed by Vladimir Khavinson in Russ...

Evidence CView Details

Octreotide

Immune SupportFDA Approved

Octreotide is a synthetic cyclic octapeptide analog of somatostatin, approved by the FDA for acromegaly, carcinoid tumors, and vasoactive in...

Evidence AView Details

Lanreotide

Immune SupportFDA Approved

Lanreotide is a synthetic somatostatin analog approved by the FDA for gastroenteropancreatic neuroendocrine tumors (GEP-NETs) and acromegaly...

Evidence AView Details

Immune Support Peptides: FAQ

Medical Disclaimer

This content is for informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendations.

Always consult a qualified healthcare provider before starting, stopping, or modifying any treatment. Do not disregard professional medical advice based on information found on this site.

No claims of therapeutic efficacy are made for substances that are not FDA-approved for the discussed indications. Research citations reflect published findings and do not imply endorsement.

Best Peptides for Immune Support

Approved entries in the Immune Support category

LL-37

Thymalin

Octreotide

Lanreotide

Recommended Reading

Immune Support Peptides: FAQ