The most common and most likely answer to this crossword clue is the 6 letter word DOSAGE
I've seen this crossword clue in Financial Times
D
O
S
A
G
E
More clues leading to the result DOSAGE
- After party, wise person gives some medicine
- Prepare herb as quantity of medicine?
- Doctor's first with old herb – the prescribed amount
- Measure and cook herb
- . Load of drugs taken in party by guru
- Number of pills required by queasy sea dog
- Quanty of drugs required to operate on guru
- Party learned how much medicine to prescribe
- Medicine administered, drop fed to beastly female
- Party — wise to get amount of drug?
Buddy explains!

The straight part
We know that "Quanty of drugs" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case quanty of drugs = dosage.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 DOSAGE mean?
DOSAGE noun- The administration of a medication etc, in a measured amount; dosing.
- The addition of a small measured amount of a substance to something, e.g. sugar to wine.
- The measured amount so administered or added; the dose.