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.
Starbucks Cold Brew Coffee has different caffeine levels from the rest of the iced coffees: 1  Tall Sweetened - 125 mg; Tall Unsweetened - 150 mg. 2  Grande Sweetened - 165 mg; Grande Unsweetened - 200 mg. 3  Venti Iced Sweetened - 250 mg; Venti Iced Unsweetened - 300 mg.