Supplement analysis backed by scientific evidence · PT

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Limited evidenceGeneral health

Lyme Herbal Protocols

Multi-herb protocols built on Japanese knotweed, cat's claw, cryptolepis and andrographis, sold for persistent Lyme symptoms. The supporting data are test-tube experiments; no clinical trial has tested any of these protocols in patients.

Evidence last reviewed: August 2026

What the science says

  • Activity against Borrelia in the laboratory Limited evidence

    An in vitro study evaluated natural and botanical medicines against growing and stationary-phase Borrelia burgdorferi and found several, including Cryptolepis sanguinolenta and Juglans nigra, active in culture. Killing bacteria in a dish at concentrations reached in a test tube says nothing about what happens in an infected person.

  • Clinical benefit in patients Limited evidence

    A review in Clinical Infectious Diseases examined unorthodox alternative therapies marketed for Lyme disease and found none supported by controlled clinical evidence, while documenting real harms from some of them. No randomised trial of a herbal Lyme protocol has been published.

  • Persistent symptoms after treatment Limited evidence

    Current guidelines on post-treatment Lyme disease syndrome recommend symptom-directed care and do not endorse herbal antimicrobial protocols or prolonged antimicrobial therapy. Persistent symptoms are real; the evidence that these products address them is not.

Dosage & safety

Studied doseNo validated dose. Popular protocols specify tinctures at escalating drop counts based on clinical tradition rather than trial data.
SafetyAcute Lyme disease is a bacterial infection with effective antibiotic treatment; delaying or replacing that treatment with herbs risks serious complications including neurological and cardiac involvement, so see a doctor. Japanese knotweed is a concentrated resveratrol source that may affect platelet function and interacts with anticoagulants. Cat's claw may stimulate immune activity and interacts with immunosuppressants and several CYP3A4 substrates. Andrographis has been linked to rare liver injury and anaphylaxis and should be avoided in pregnancy. These protocols typically stack many potent extracts at once, which multiplies interaction risk.

Scientific references

Where to buy

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