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.
A Starbucks 12-ounce brewed coffee, for example, contains 260 milligrams of caffeine, while the same cup from Caribou contains 230 milligrams, according to Starbucks and Caribou coffee, respectively.