Dexlansoprazole is a proton pump inhibitor which is used as an untiulcer drug in the treatment and maintenance of healing of duodenal or gastric ulcers, erosive and reflux esophagitis, NSAID-induced ulcer, Zollinger-Ellison syndrome, and Barrett's esophagus. Lansoprozole is active against Helicobacter pylori.
Chemically, it is an enantiomer of lansoprazole.
It suppress gastric acid secretion by specific inhibition of the (H+,K+)-ATPase enzyme system at the secretory surface of the gastric parietal cell.
Because this enzyme system is regarded as the acid (proton) pump within the parietal cell, Lansoprazole has been characterized as a gastric acid-pump inhibitor, in that it blocks the final step of acid production.
it is freely soluble in water and having the water solubility 0.97 mg/L
pH is defined by the negative logarithm of the hydrogen ion activity.
This drug was having acidic pH that is approximately 5.5
Lansoprazole is stable when exposed to light for up to two months. The rate of degradation of the compound in aqueous solution increases with decreasing pH. The degradation half-life of the drug substance in aqueous solution at 25°C is approximately 0.5 hour at pH 5.0 and approximately 18 hours at pH 7.0.
The pKa (The negative logarithm of the acid dissociation constant, Ka)of the lansoprazole is 17.3
- Dexlansoprazole Information for Consumers
- Dexlansoprazole Information for Healthcare Professionals (includes dosage details)
- Side Effects of Dexlansoprazole (detailed)
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.
Anybody can give the few example of new drugs having low oral bioavailability due to low solubility?
Posted 25 Jan 2010 • 1 answer
Posted 3 Jun 2010 • 1 answer
Posted 2 Mar 2011 • 1 answer
Posted 27 Nov 2014 • 1 answer
Posted 9 Sep 2017 • 1 answer