24 HOUR HEARTBURN RELIEF: The active ingredient in Prevacid 24HR is lansoprazole, an acid reducer, which helps to keep heartburn pain at bay for 24 hours | | REDUCE HEARTBURN: enjoy good meals, good times and a good night's sleep without the pain; Use as directed for 14 days to treat frequent heartburn; Not intended for immediate relief, although some people get complete relief of symptoms within 24 hours | | EFFECTIVE HEARTBURN TREATMENT: Prevacid 24HR is a 14-day course treatment and clini