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.
Review of McDonald's Iced Coffee with Sugar Free Vanilla Syrup. Grabbing coffee on the go is about as natural as brushing oneâs teeth or making oneâs bed in the morning. Whether it is from the corner bodega or a large chain like Starbucks, coffee often helps people get through their day. So if you are one of those people, McDonaldâs has a great option to get a caffeine fix while keeping your sugar down -- McDonaldâs Iced Coffee with Sugar Free Vanilla Syrup.