Take control of your heartburn with Nexium Control® and you can enjoy up to 24 hour protection. Nexium Control® can provide up to 24 hour protection from heartburn offering an alternative option to short term relief such as antacids and alginates. Nexium Control® reduces stomach acid at the source to help provide relief, all day and all night. Just one pill a day can continuously prevent heartburn from recurring for up to 24 hours helping to keep you heartburn-free. Nexium Control® 20 mg gastro-resistant tablets for the short-term treatment of reflux symptoms (e.g. heartburn and acid regurgitation) in adults.