A study of the clinical activity of a gel combining monocaprin and doxycycline: a novel treatment for herpes labialis
Abstract
BACKGROUND: Current treatment of herpes labialis is usually with topical antiviral drugs and early drug administration is required for effectiveness. Monocaprin, a 1-monoglyceride of capric acid, has high microbicidal activity in vitro and efficiently inactivates herpes simplex virus. Tetracyclines are inhibitors of matrix metalloproteinases that are part of the inflammatory response and contribute to the breakdown of tissue in ulcers. The study objective was to investigate the antiviral and wound-healing effect of a hydrogel containing either monocaprin or a combination of monocaprin and a low dose of doxycycline in vivo against herpes labialis.
METHODS: Subjects were divided into two groups: (i) with prodromal symptoms of herpes labialis; (ii) with a vesicle. Both groups applied the hydrogel five times a day for five days. Test formulations were: (i) hydrogel containing monocaprin and doxycycline (MCD), (ii) hydrogel containing only monocaprin and (iii) placebo hydrogel. Formulations were distributed randomly to subjects within each group. Subjects recorded treatment results in a 6-day diary and a 7-day follow-up diary.
RESULTS: For the MCD group the mean time to healing was 5.5 days (prodromal) and 5.3 days (vesicles/ulceration) or significantly shorter than for the placebo groups (7.25 and 7.5 days respectively; P < 0.05). Pain relief was significantly more with MCD (combining both the prodromal and vesicle groups) than with the monocaprin and placebo groups (P =…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design.
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