I have rosacea. It was under control with Metrogel. It has flared up badly. I have started taking Brintellix, and I want to know if Brintellix causes rosacea. ## Hello, Mary! How are you? I'm very sorry about the problem you've had. Brintillex has been known to cause facial redness, as listed by the FDA. Other side effects may possibly include nausea, dizziness, restlessness and dry mouth. If it's caused your rosacea to flare that badly, you might need to try a different medication. Have you spoken to your doctor about it, yet?