Metronidazole rosaceaDon't have a dermatologist?. . . The mechanisms by which metronidazole acts in reducing inflammatory lesions of rosacea are unknown. 5 mg of metronidazole) of 10 rosacea patients showed a maximum serum concentration of 66 ng/mL . However the mechanisms by which topical metronidazole works in reducing inflammatory lesions of rosacea are unknown. metrogel: a 0. . . . . 75%), a topical treatment for rosacea, closely related to metrogel and metrocream. . . Safety and efficacy ... more