Can ibuprofen be taken on an empty stomach?
Ibuprofen is a common nonsteroidal anti-inflammatory drug (NSAID) that helps relieve pain, reduce fever, and combat inflammation. Generally, ibuprofen should not be taken on an empty stomach and should be used under the guidance of a physician. The detailed explanation is as follows:

Ibuprofen is a weak acid and lipophilic drug that can directly penetrate the gastric mucosal barrier. In an empty stomach state, the drug comes into direct contact with the gastric mucosa, which may cause repeated diffusion of hydrogen ions and consequently damage the gastric mucosa. At the same time, ibuprofen also inhibits the activity of cyclooxygenase, reducing the synthesis and secretion of endogenous prostaglandins. Prostaglandins play an important role in protecting the gastric mucosa. When their synthesis decreases, the protective mechanisms of the gastric mucosa weaken accordingly, thereby increasing the risk of gastric mucosal damage.
Additionally, taking ibuprofen on an empty stomach may cause gastrointestinal discomfort symptoms such as stomach pain, heartburn, nausea, vomiting, abdominal pain, indigestion, and gastrointestinal bloating. These symptoms may reduce patients' quality of life and potentially worsen existing gastrointestinal diseases, such as gastritis, gastric ulcers, and duodenal ulcers.
During the use of ibuprofen, attention should be paid to observing bodily reactions, and alcohol consumption and smoking should be avoided to reduce the risk of gastrointestinal damage.