A study shows that water may be more effective than acid-inhibiting drugs in its effect on gastric pH.
Study participants were given either a glass of water, antacid, ranitidine, omeprazole, esomeprazole, or rabeprazole. Their gastric pH was recorded for 6 hours after each drug intake. Water increased gastric pH by more than 4 after just one minute. In contrast, antacid took 2 minutes, and most of the other drugs took more than two hours.
According to the study in Digestive Diseases and Sciences:
“Water and antacid immediately increased gastric pH, while PPIs showed a delayed but prolonged effect compared to ranitidine.”