Hemoglobin: The oxygen-carrying pigment and predominant protein in the red blood cells. Hemoglobin forms an unstable, reversible bond with oxygen. In its oxygenated state it is called oxyhemoglobin and is bright red.
Caffeine by McDonalds Iced Coffee Size. 1  Medium (16 floz): 133mg. 2  Large (22 floz): 200mg. 3  Extra Large (32 floz): 320mg.
Everyone knows you can find plenty of caffeine in regular coffee (80-150 milligrams in a 6-ounce cup of brewed coffee). But you might be surprised to find as much (or more) caffeine in energy drinks, sodas -- even gum and ice cream. Coffee-flavored frozen yogurt and ice cream is also suspect, with anywhere from 45 to 85 milligrams of caffeine per cup, depending on the brand.