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Updated: Jun 7, 2026
Local Hyperthermia for Warts Treatment
Published on: November 8, 2024
Systemic treatments for cutaneous warts: a systematic review
Thierry Simonart1, Viviane de Maertelaer
1Université Libre de Bruxelles (ULB), Brussels, Belgium. tsimonar@ulb.ac.be
Background:
Systemic therapies are routinely used for the management of cutaneous warts. However, there is a lack of evidence-based data on their effectiveness.
Objective:
To assess the evidence for the efficacy of systemic treatments for cutaneous warts.
Methods:
We designed a systematic review of the randomized controlled clinical trials (1962 to April 2010) investigating systemic therapies for the treatment of cutaneous warts. We obtained data from MEDLINE, PubMed, Current Contents, reference lists, and specialist textbooks, with no restriction on language. The main outcome measures were the total clearance of warts and the adverse effects.
Results:
There was substantial heterogeneity in the design of the trials. No consistent evidence was found for the efficacy of cimetidine, levamisole or homeopathy, and only limited evidence was found for the efficacy of zinc.
Conclusions:
Reviewed trials of systemic treatments for cutaneous warts were highly variable in methods and quality, and there was a paucity of evidence from randomized, placebo-controlled trials on which to base the rational use of such therapies. Limited evidence is emerging that zinc may be effective in selected populations with zinc deficiency.
Insights
Systemic treatments for warts lack strong evidence. While zinc shows some promise for specific populations, most therapies, including cimetidine and homeopathy, are not consistently effective for clearing warts.
Area of Science:
- Dermatology
- Evidence-based medicine
Background:
- Systemic therapies are commonly used for cutaneous warts.
- Evidence supporting their effectiveness is limited.
Purpose of the Study:
- To systematically review the efficacy of systemic treatments for cutaneous warts.
Main Methods:
- Systematic review of randomized controlled trials (1962-2010).
- Searched MEDLINE, PubMed, Current Contents, and other sources.
- Assessed total wart clearance and adverse effects.
Main Results:
- Heterogeneity in trial design was substantial.
- No consistent evidence for cimetidine, levamisole, or homeopathy.
- Limited evidence suggests zinc may be effective.
Conclusions:
- Systemic wart treatment trials show variable methods and quality.
- Paucity of high-quality randomized, placebo-controlled trials.
- Emerging evidence supports zinc's efficacy in specific populations, particularly those with zinc deficiency.
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