Hipertensión

Allicin is the principal bioactive organosulfur compound of garlic credited with its antiviral and anti-wart activity. It exhibits anti-DNA activity against HPV, enhances NK cell function, and clinical trials using garlic extract standardized for allicin content showed 70–100% wart clearance. Lipid-based formulations that preserve allicin content showed superior wart resolution compared to aqueous preparations.

Oral propolis achieved 75% cure in plane warts and 73% in common warts in a randomized 3-month trial of 135 patients, significantly outperforming both echinacea and placebo. Propolis is rich in flavonoids with antiviral and immunomodulatory properties. Topical propolis formulations also demonstrated wart-clearing activity in an uncontrolled case series of 53 patients.

Green tea catechins constitute 85–95% of sinecatechins (Veregen®), the FDA-approved first botanical prescription for external genital and perianal warts. Three Phase 3 RCTs in over 1,000 patients showed 54–57% complete wart clearance vs ~34% with placebo. Catechins inhibit HPV-activated cell proliferation and induce apoptosis in HPV-positive keratinocyte cell lines.

In Japan, coix seed (Yokuinin) is an approved ethical drug for verruca vulgaris and flat warts (verrucae planae), listed in the Japanese Pharmacopeia. Case reports and small human trials support efficacy, and the mechanism is attributed to immunomodulation against HPV.

EGCG is the primary catechin (>55%) in FDA-approved sinecatechins ointment (Veregen®) for external genital and perianal warts. Phase 3 RCTs in 1,000+ patients achieved 54–57% complete clearance vs ~34% with placebo. EGCG inhibits HPV-activated cell proliferation and induces apoptosis in HPV-positive cell lines; HeLa cells showed 75% growth inhibition at 313 µM.

Garlic extract has demonstrated comparable efficacy to cryotherapy in a clinical trial for genital warts, and separate trials show resolution of cutaneous warts and corns. Proposed mechanisms include antiviral activity (allicin-mediated anti-DNA action), enhancement of natural killer cell function, and immunomodulation. Traditional use of garlic for warts spans centuries across multiple cultures.

Clinical trials have evaluated topical garlic extract for wart resolution, including a comparison with cryotherapy for male genital warts. A randomized control study found lipid garlic extract applied twice daily for four weeks showed greater potential in recalcitrant multiple warts. Garlic's antiviral and immune-stimulating properties underpin this effect.

Sinecatechins 15% ointment—derived from green tea (Camellia sinensis) catechins—is the first FDA-approved botanical prescription treatment for external genital and perianal warts, approved in 2006. Phase 3 RCTs in over 1,000 patients found 54.9–57.2% complete wart clearance with sinecatechins vs ~33.7% with placebo. It inhibits HPV-activated cell proliferation and induces apoptosis in HPV-positive cell lines.

Tea tree oil from Melaleuca alternifolia has been documented in peer-reviewed case reports and a small randomized trial to resolve common warts (verruca vulgaris). A randomized controlled trial found it non-inferior to salicylic acid-lactic acid solution for common warts over 6 weeks. Its major component terpinen-4-ol has documented antiviral and antiseptic properties.

Tea tree oil (from Melaleuca alternifolia) has peer-reviewed case reports documenting complete clearance of common and hand warts, and a small randomized trial found it non-inferior to salicylic acid-lactic acid solution for common warts over 6 weeks. Its major component terpinen-4-ol possesses antiviral and antiseptic properties. Evidence is limited to case reports and one small comparative RCT.

Multiple randomized controlled trials and a 16-study systematic review confirm oral zinc sulfate, intralesional zinc, and topical zinc are effective for viral warts. A landmark placebo-controlled RCT achieved 86.9% complete clearance in recalcitrant wart patients treated with oral zinc sulfate 10 mg/kg/day. Zinc acts primarily as an immunomodulator via Toll-like receptor-mediated dendritic cell regulation.

Warts are listed among traditional uses of agrimony in herbal references (RxList, WebMD), likely based on the herb's astringent and antimicrobial properties. Topical application of agrimony as a concentrated decoction or tincture is documented in folk practice. No clinical trial data exist.

Warts are listed among traditional indications for O. basilicum in documented folk medicine. The antiviral properties of basil constituents provide a pharmacological rationale. No clinical trials exist for this indication.

Birch bark has documented traditional use for topical treatment of warts, recorded in European and indigenous North American folk medicine. Betulinic acid has demonstrated antiviral activity in preclinical studies, providing mechanistic plausibility. No clinical trials for birch specifically in wart treatment have been identified.

Black walnut hull has documented traditional use for viral warts, applied topically as a caustic tincture or tar. The high juglone content creates a cytotoxic effect on hyperproliferating tissue. Traditional herbalists record this use; it is listed among dermatological applications in herbal references. No clinical trials exist.

Echinacea is proposed in naturopathic and integrative medicine as an immune adjunct for wart management, given HPV warts are immune-mediated. However, the only direct clinical trial (Zedan et al., 2009; 135 patients, 3 months) found oral echinacea did not significantly outperform placebo for wart clearance, whereas oral propolis in the same trial achieved 73–75% cure. EBSCO and NCCIH acknowledge it as a proposed but unproven natural treatment.

Echinacea purpurea is the primary Echinacea species used commercially and proposed in integrative medicine as an immune adjunct for HPV wart management. The only direct RCT (Zedan et al., 2009; 135 patients) found oral echinacea did not significantly outperform placebo for wart clearance. Its immunostimulatory mechanisms are established for other indications but have not been demonstrated to translate to wart clearance.

The topical application of milkweed latex to remove warts is one of the most widely and consistently documented traditional uses across multiple Indigenous groups and early American herbal literature. The Miwok and other peoples applied fresh sap directly to warts. The sap's keratolytic and potentially antiviral properties have been noted, though no clinical trials exist.

The ancient Greek physician Dioscorides explicitly described an ointment made from teasel roots as useful against warts and wens. European folk medicine also used the dew water collected in the natural cups formed by teasel leaves as a topical remedy for warts. These are traditional uses only with no scientific evidence.

Thuja occidentalis is one of the oldest traditional herbal and homeopathic remedies for warts, used by herbalists and naturopathic physicians for genital, anal, and common warts. Open and double-blind clinical studies on topical Thuja extract showed efficacy in reducing plantar wart size and elimination after one month. However, a large RCT of homeopathic Thuja 30c found no superiority over placebo for plantar warts.