Hexidine 160ml Mouthwash for Gingivitis by ICPA. It kills the harmful bacteria in the oral cavity that cause swollen gums, tartar, and bad odor from the mouth. This way it cleans the affected area and speeds up healing. For best results, rinse at least 30 minutes after toothbrushing and avoid drinking or eating for at least 30 minutes after rinsing. For more details visit a website.