The most common and most likely answer to this crossword clue is the 7 letter word PILULES
I've seen this crossword clue in Financial Times
P
I
L
U
L
E
S
Buddy explains!

The straight part
We know that "Tablets" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tablets = pilules.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PILULES mean?
PILULES noun- A little pill.