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.
Sweetened and unsweetened iced tea varieties contain 19 milligrams of caffeine each, while green iced tea with honey contains the smallest amount: nine milligrams per serving. Lemon, raspberry and peach varieties all contain 19 milligrams per serving, while iced tea lemonade and white iced tea each contain 13. Incidentally, Arizona iced tea (all varieties) contains only 15-30 mg of caffeine per 20-ounce bottle.