Onda 8 mg tablets contain Ondansetron, a medication used to prevent and treat nausea and vomiting caused by chemotherapy, radiation therapy, or surgery. Each pack contains 15 tablets./Description: Onda tablets contain Ondansetron, a serotonin 5-HT3 receptor antagonist that works by blocking the action of serotonin, a natural substance that may cause nausea and vomiting. These tablets are used to prevent and treat nausea and vomiting associated with chemotherapy, radiation therapy, and surgery. The recommended dosage is 8 mg taken every 12 hours as directed by a healthcare provider.. Please Note that product description, color, ingredients, package and other information maybe different from the original pack kindly check the product for more accurate details.