Medicating (6)
I believe the answer is:
dosing
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">medicating</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dosing is a kind of medicating)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dosing that I've seen before include "Dispensing" , "Giving medicine" .)