Crossword clue: used especially of drugs or muscles that work together so the total effect is greater than the sum of the two (or more)

The most common answer is interactive (11 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

interactive 11 letters wn-def

used especially of drugs or muscles that work together so the total effect is greater than the sum of the two (or more)

synergistic 11 letters wn-def

used especially of drugs or muscles that work together so the total effect is greater than the sum of the two (or more)