About H2 blockers. H2 blockers â also known as histamine 2 receptor antagonists â are medications that decrease the amount of acid the stomach produces. These drugs are used to treat various gastrointestinal disorders.2 blockers work by preventing the action of histamine, a substance released by the human immune system during allergic reactions. Histamine normally interacts with gastric H2 receptors to produce stomach acid. The H2 blockers inhibit this response and help reduce gastric acid output.
How long does it take to cook a 2.5-pound meatloaf? Recipes vary, but a meatloaf is generally baked for between 1 to 1 1/2 hours in a 350 to 400 degree oven. The type of meat and fillers used affect the cooking time.
Meatloaf is best cooked at 350 or 375 versus 400. Cook time varies  depending on the shape of the meatloaf. It can be hand shaped into  a round loaf or in a loaf pan. Intern â¦ al temperature should be 170  degrees.To cook faster, you can shape it into two loafs and bake.ever cook for just 22 minutes, even if it's just a 1lb. Cook it on 350 for 40 minutes per lb. 1 lb. of ground beef = 375 degrees for one hour.