18+ and educational only: not medical advice.
MyPeps

Peptides for immune support

4 peptides used for immune support and inflammation, ranked by how much human research backs each one. Status, lab purity and mixing math for every one. Educational, not medical advice.

Ranked by evidence

  1. Thymosin Alpha-1

    Immune-modulating peptide approved in dozens of countries.

    Multiple RCTs in hepatitis and sepsis; mixed results in sepsis (large trial neutral).

    4/5Not FDA approvedLab purity 99.92%
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  2. LL-37

    The human body's own antimicrobial peptide, cut from cathelicidin.

    Small human trials of topical LL-37 for venous leg ulcers; a larger Phase IIb missed its overall goal. No human data for injection.

    3/5Not FDA approvedWADA bannedLab purity 99.79%
    Read the profileCalculator

  3. VIP

    A 28-amino-acid neuropeptide that relaxes blood vessels and calms inflammation.

    Real human data (ED approval in the UK, small lung studies, a large COVID RCT that failed). CIRS nasal use is small open-label work only.

    3/5Not FDA approvedLab purity 99.75%
    Read the profileCalculator

  4. KPV

    A three-amino-acid anti-inflammatory fragment of α-MSH.

    Cell and mouse colitis studies (e.g. Dalmasso 2008, Gastroenterology). No published human trials.

    2/5Not FDA approvedWADA bannedLab purity 99.35%
    Read the profileCalculator

Ranked by human evidence (how we rate it), then FDA approval. Higher isn’t a recommendation to use anything.

Compare them head to head

Common questions

What is the best-researched peptide for immune support and inflammation?

Thymosin Alpha-1, rated 4/5 for human evidence: Multiple RCTs in hepatitis and sepsis; mixed results in sepsis (large trial neutral).

Are any peptides for immune support and inflammation FDA approved?

No. None of the 4 peptides here is FDA approved for this use; most are sold as research chemicals.

Which are banned in sport?

WADA bans LL-37, KPV.

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