Ranitidin Normon - Pharmacological action Ranitidine is a blocker of histamine H2-receptors. Inhibits basal and stimulated by histamine, gastrin and acetylcholine (to a lesser extent) the secretion of hydrochloric acid. Increases the pH of gastric contents and reduces the activity of pepsin. The duration of action of ranitidine with a single admission - 12 hours. Pharmacokinetics After oral administration, ranitidine is rapidly absorbed from the gastrointestinal tract. Eating and antacids significantly...