<chemical> (11 alpha,13e)-1,11,16-trihydroxy-16-methylprost-13-en-9-one. A synthetic methylprostaglandin e1 analog that reduces gastric acid secretion and enhances the gastric mucus-bicarbonate barrier. It is effective in the therapy of gastric ulcers and gives significant protection against nsaid-induced gastric mucosal damage. The drug also...