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.
The calorie content of a McDonald's iced vanilla coffee varies depending on the size of the beverage and any additional ingredients, such as creamer or extra sugar.f cream or sugar are added, though, the calories can start to add up fast. McDonald's offers iced coffee drinks with a flavor sweetener choice for the same price as a regular iced coffee.