What characteristics must cold medicine have that allow it to be transported throughout your body?

A cold medicine should be soluble in the water, as it needs to be transpored throughout your body. This allows better absorption of the drug, by the system.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.