Is ranitidine a ppi?

No, H2 blocker: A ppi refers to proton pump inhibitor class of medication. Ranitidine is an h2 blocker and acts via a different mechanism.

No: It is a medication which blocks histamine. Histamine can stimulate the acid producing cells in the stomach to secrete acid. Ppi refers to a different way to decrease stomach acid secretion. They block the cells ability to actually move hydrogen ions out of the cell into the lumen if the stomach.

No, it's a blocker: Of the histamine-2 receptor, which stimulates gastric acid secretion. Ppi's work by a different mechanism: they irreversibly block the hydrogen/potassium Adenosine triphosphatase enzyme system (the gastric proton pump) of the gastric parietal cells, which secrete acid. Ppi's tend to be stronger inhibitors of acid secretion.