- Use within 2 month prior to the Baseline Visit of 1) topical retinoids to the face, 2) systemic antibiotics known to have an impact on the severity of facial rosacea (e.g., containing tetracycline and its derivatives, erythromycin and its derivatives, sulfamethoxazole, or trimethoprim, metronidazole), or 3) systemic corticosteroids.