References:
1. IMS Health, National Disease and Therapeutic Index, Custom Report, 5/17/07.
2. Del Rosso JQ, Webster, GF, Jackson M, et al. Two randomized phase III clinical trials evaluating anti-inflammatory dose doxycycline (40-mg doxycycline, USP capsules) administered once daily for treatment of rosacea. J Am Acad Dermatol. 2007;56(5):791-802.