Evaluation of Effectiveness of Low-dose-Longterm Vibramycin on Acne Vulgaris with Double-blind Study / 대한피부과학회지

ABSTRACT

In order to evaluate the the effectiveness of low-dose longterm Vibramycin (Doxycycline) treatment on Acne Vulgaris, a double-blind study was performed on fifty two patients with Acne Vulgaris. The patients were classified as to the severi.ty of their disease before treatment according to Wand. et al. The degree of the effcctiveness of the treatment was evaluated every other week for 12 weeks on the grounds of clinical improvement. The therapeutic results obtaincd were as follovs araong the 19 patients who received 50 mg per day for 12 weeks, 13 cases (72.2%) showed excellent improverrent after 6 weeks; whereas in thc placebo group only 4 out of 15 patients (26. 7%) showed good response, Statistical analysis of the data revealed that there was a significant difference (p<0.05) in effectiveness between the Vibrarzycin 50mg per day group and the placebo group. Among the 19 patient who received a 100mg capsile orally per day for 4 weeks (subsequently this group received 50mg per day for 8 weeks) 13 cases.(68.4%) showed excellent improvement in 4 weeks; whereas in the placebo group only 4 cases(26, 7%) showed good respnnse Statistical analysis of this data revealed that there was a significant difference (p<0. 05) in efectivencess the Vibramycin 100mg per day group and the placebo group, It was noted that 44 out of 52 patients (83%) had a distinct family history of the disease, suggesting that there might be a predisposing hereditary factor involvcd in the manifestation of Acne Vulgaris It is concluded f rom this study that Vibramycin, when administrated in a dose of 50mg per day for more than 6 weeks is effective in the treatment of Acne Vulgaris.