The most common and most likely answer to this crossword clue is the 8 letter word ISOTONIC
I've seen this crossword clue in Financial Times
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More clues leading to the result ISOTONIC
- Replacing fluids and salts is boost where egg's eaten
- Like sports drink, one drunk on ice, briefly
- Sort of drink from India, drunk chilled mostly
- Replacing fluids and salt is boost with nothing eaten
- I really drink and like some drinks
- Drunk in classic style, as energy drinks might be
- Standards organisation gets boost to balanced hydration
- One thus needs medicine such as an energy drink?
- Like athlete’s drink — is ‘medicine’ with nothing in it
- One really invigorating kind of drink
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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 ISOTONIC mean?
ISOTONIC adjective- (of two solutions) having the same osmotic pressure
- (of a medical solution) Having the same concentration of solutes as human blood.
- (of two muscles) having equal tension
- Of or involving muscular contraction against resistance in which the length of the muscle changes. Antonym is isometric. Isotonic movements are either concentric (working muscle shortens) or eccentric (working muscle lengthens). See also Wikipedia:Isotonic (exercise physiology)
- Having the same tone.