A few seconds before swallowing bad-tasting liquid medicine, suck on an ice cube. It’ll numb your tastebuds and make the medicine taste less nasty.
If the medication label says to take it with water, don’t take it with coffee or whatever’s handy. Other drinks may not dissolve the medication properly.
The heat and humidity in the bathroom are bad for medicine, so move it to the linen closet. Just install spice racks inside the closet door; they’re the right size for prescription bottles.