Is Metronidazole gel good for roseca?

This needs an in-person evaluation. I recommend getting a formal evaluation with a cosmetic dermatologist. For rosacea, I like a combination using lasers (ProYellow, Pulsed Dye/Vbeam, Excel V, Clear + Brilliant), peels and botox to the cheeks. This makes dramatic changes in color and symptoms. See an expert. Best, Dr. Emer

I highly recommend using a product by Colorescience called All Calm for roseca. It is a 3 in 1 proprietary formula instantly neutralizes the appearance of redness, helps soothe and calm sensitive skin, and provides SPF 50 protection while its patent pending BioSolace complex helps provide ongoing relief from sensitivity and the appearance of redness.
It not only helps treat the redness but it also gives instant coverage. 

Rosacea is very complex and a tailored treatment program give the best results. This is because there are many types of rosacea (telengtctatic or capillaries, flushing and redness, acne like rosacea, ocular rosacea and even rhinophyma rosacea.). Rozex can help, however I see a different population of rosacea patients as nothing else works and being a laser dermatologist, they climb up the ladder to lasers. 
To add to the complexity, everyone has different flare factors- Sunlight, stress, foods, chemical irritants, creams, changes in temperature, alcohol. The list goes on. 

A detailed history, together with a treatment tailored according to YOUR type of rosacea will give the best results. As a guide, I use a combination of -

1. Lasers ( to treat redness, broken capillaries, rhinophyma, flushing)- best laser is the V BEAM. IPL can be used, but usually not as effective. Laser toning using the long pulse Nd Yag at 1064 can help with background redness. 

2. Creams - anti inflammatory- This include Rozex, Solantra etc....etc... 
3. Tablets -anti - inflammatory and sometimes low dose Vitamin A. 

4. For females- Mineral make up is recommend, over make up that contains parabens. 

For the best results, consult a dermatologist for both medical and laser treatment options.- a great resource to treat your rosacea and give you an understanding of the complexity of this chronic condition is rosacea.org  
Kind regards.

Dr Davin S. Lim.

Laser Dermatologist.

Brisbane, Australia.