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. A small iced vanilla coffee with regular syrup contains 130 calories, at 8 fluid ounces. A medium iced vanilla coffee with regular syrup is 11.5 fl oz and contains 190 calories, while a large iced vanilla coffee has 270 calories. If you choose the sugar-free vanilla syrup in place of the regular vanilla syrup, a small iced vanilla coffee contains 60 calories.