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Subantimicrobial-dose doxycycline in the treatment of moderate facial acne
Parviz Toossi1, Mehdi Farshchian, Farhad Malekzad
1Skin Research Center, Shahid Beheshti Medical University, Shohada-e Tajrish Hospital,Tehran, Iran.
Background:
Acne is a common inflammatory skin disorder. Oral antibiotics play a significant clinical role in treating acne.
Objective:
The purpose of this study was to compare the efficacy of doxycycline at antimicrobial and subantimicrobial doses for the treatment of acne.
Methods:
A prospective, randomized, double-blind, controlled trial was performed. One hundred patients with moderate facial acne were randomized into 2 treatment groups, one receiving a tablet containing 20 mg of doxycycline to be taken twice daily and the other receiving a tablet containing 100 mg of doxycycline and a matching placebo tablet to be taken twice daily.
Results:
Subantimicrobial-dose doxycycline administered twice daily for 3 months in patients with moderate inflammatory acne results in significant reduction in the number of total inflammatory lesions. There was an 84% reduction in number of papules and a 90% reduction in number of pustules with treatment.
Conclusion:
Subantimicrobial-dose doxycycline is an effective treatment for patients with moderate acne vulgaris.
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