Headache tablet (7)
I believe the answer is:
aspirin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">headache tablet</span>' is the definition.<br/ >'<span class="explanation-format__answer">aspirin</span>' can be an answer for '<span class="explanation-format__original">tablet</span>' <span class="explanation-format__explanation">(tablet of aspirin medication)</span>. I also know that 'headache' relates to this answer.<br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for aspirin that I've seen before include "Common analgesic drug" , "headache cure" , "Headache pill" , "Synthetic analgesic" , "Anti-inflammatory analgesic" .)