It is important to follow non-pharmacological measures to control gastroesophageal reflux (GERD). These measures include avoiding eating or drinking anything other than water three hours before bedtime, elevating the head of the bed, avoiding certain foods and beverages, and abstaining from alcohol and tobacco. Chewing gum can also help neutralize stomach acid. Additionally, make sure to take your omperazole 30 minutes before your first meal of the day for maximum effectiveness. If you experience gastrointestinal discomfort from iron and calcium supplements, consider visiting a pharmacy to explore alternative options that may be better tolerated.