Omeprazole withdrawal

Discontinuation of powerful acid reducer drugs such as omeprazole after long-term treatment may be tough. One study showed that some patients who had never had heartburn before developed it when they abruptly discontinued using omeprazole. In such cases symptoms that come after discontinuation were far worse than initial problem. Another study found that some of healthy volunteers who were on inactive placebo pills have not developed unpleasant digestive symptoms (heartburn, reflux and digestive problems) such as those who took PPIs for a month.

Can I take Omeprazole before endoscopy or gastroscopy surgery?