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Brief Title: Oral Zinc Gluconate as Treatment for Recalcitrant Cutaneous Warts: A Randomized, Double-blind, Placebo-controlled Trial
Official Title: Oral Zinc Gluconate as Treatment for Recalcitrant Cutaneous Warts: A Randomized, Double-blind, Placebo-controlled Trial
Study ID: NCT01783353
Brief Summary: Up to one-third of common warts can remain recalcitrant, an occurrence that has been attributed to impaired cell-mediated immunity. At present, no guidelines exist for the management of recalcitrant cutaneous warts. Zinc, a well-established immunomodulatory agent, has shown promise in this regard. Previous studies documenting the efficacy of oral zinc used zinc sulfate given at a maximum dose of 600 mg/day, equivalent to 140 mg of elemental zinc, which is over three times the recommended upper limit of 40 mg of elemental zinc per day. This raises concerns over safety and tolerability. In the Philippines, oral zinc is more widely available in chelated forms such as zinc gluconate, which have the benefit of improved absorption compared to non-chelated compounds such as zinc sulfate. This study will seek to determine if zinc gluconate 300 mg/day, equivalent to 40 mg of elemental zinc, will be efficacious in treating recalcitrant cutaneous warts. This lowered dose may have the added benefits of increased safety, tolerability, and cost-effectiveness.
Detailed Description:
Minimum Age: 19 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: ALL
Healthy Volunteers: Yes
Philippine General Hospital, Manila, NCR, Philippines
Name: Rochelle L. Castillo, M.D.
Affiliation: Philippine General Hospital Section of Dermatology
Role: PRINCIPAL_INVESTIGATOR