The half-life of the ketorolac tromethamine S-enantiomer was approximately 2.5 hours (SD Â± 0.4) compared with 5 hours (SD Â± 1.7) for the R-enantiomer. In other studies, the half-life for the racemate has been reported to lie within the range of 5 to 6 hours.
Proton pump inhibitors (PPIs) are a group of drugs whose main action is a pronounced and long-lasting reduction of gastric acid production. Within the class of medications, there is no clear evidence that one agent works better than another. They are the most potent inhibitors of acid secretion available.
What is omeprazole, and how does it work (mechanism of action)? Omeprazole is in a class of drugs called proton pump inhibitors (PPI) that block the production of acid by the stomach. Other drugs in the class include lansoprazole , rabeprazole , pantoprazole , and esomeprazole .