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 typical cup of coffee has 12 to 16 milligrams of caffeine per fluid ounce. The consensus from the latest studies is that moderate amounts of caffeine donât raise the risk of heart disease, high blood pressure, cancer, or other ills.