Clinical Trials
2025 Frontiers in Medicine
Kuvaldina M, Preston J, McClellan D et al.
Small randomized Columbia University pilot of disulfiram for persistent post-treatment Lyme fatigue. Six of nine participants had meaningful fatigue improvement, but several stopped due to worsening or lab abnormalities; lower doses were better tolerated. Too small to judge efficacy.
Herbal & Botanical
2020 Frontiers in Medicine
Feng J, Leone J, Schweig S et al.
Tested 15 botanicals popular with Lyme patients. Cryptolepis, black walnut, Japanese knotweed, sweet wormwood, cat's claw, Cistus and Chinese skullcap were active against dormant Borrelia; Cryptolepis was the only one to fully eradicate it. Stevia, andrographis, grapefruit seed extract, colloidal silver and monolaurin showed little activity.
Herbal & Botanical
2017 Frontiers in Medicine
Feng J, Zhang S, Shi W et al.
Johns Hopkins screen of 34 essential oils against dormant (stationary-phase) Borrelia. Oregano, cinnamon bark and clove bud oils completely eradicated the bacteria with no regrowth and outperformed the persister drug daptomycin; carvacrol was the key active compound in oregano.
Persistence & Persisters
2015 Antimicrobial Agents and Chemotherapy
Sharma B, Brown AV, Matluck NE et al.
Northeastern University study showing Borrelia forms drug-tolerant "persister" cells that survive standard antibiotics without genetic resistance. Repeated pulses of ceftriaxone eventually killed all persisters in culture — a lab basis for pulse dosing.