While a plant-based meal would qualify as vegan (adjective), a person who follows a plant-based (vegan) diet is not necessarily a vegan (noun). For example, someone could follow a plant-based diet but still wear leather and have no moral issue with hunting or killing animals for food.
Ball-and-stick model of cimetidine, the prototypical H 2 -receptor antagonist. The H2 receptor antagonists are a class of drugs used to block the action of histamine on parietal cells (specifically the histamine H2 receptors) in the stomach, decreasing the production of acid by these cells.he H 2 antagonists are competitive antagonists of histamine at the parietal cell H 2 receptor. They suppress the normal secretion of acid by parietal cells and the meal-stimulated secretion of acid.
H2 blockers (also sometimes referred to as acid reducers or H2 receptor antagonists) are available in nonprescription and prescription forms.Prescription forms are stronger than the nonprescription forms. H2 blockers are usually taken by mouth, although some can also be given as an injection.Two doses (morning and evening) are typically recommended to control both daytime and nighttime symptoms.rescription forms are stronger than the nonprescription forms. H2 blockers are usually taken by mouth, although some can also be given as an injection. Two doses (morning and evening) are typically recommended to control both daytime and nighttime symptoms.