Azelaic acid is mildly effective as a comedolytic, antibacterial and anti-inflammatory agent
It is recommended as second line in several guidelines
Some people may prefer azelaic acid to benzoyl peroxide as it is less likely to cause skin irritation.
Metronidazole can be used for 6-9 weeks for mild to moderate rosacea
Azelaic acid may be more effective especially in people without sensitive skin.