WordNet records no synonym and no antonym for cox-2 inhibitor. It is the only member of its synset, which is common for technical, taxonomic and single-sense vocabulary — there is no other English word that means the same thing. The broader and narrower terms below are the useful relations in that case.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
an anti-inflammatory drug that fights pain and blocks Cox-2 activity without impeding the activity of Cox-1; increases the risk of heart attacks
“Cox-2 inhibitors reduce the symptoms of arthritis without endangering the stomach and kidneys”
Synonyms, antonyms and the broader and narrower relations for cox-2 inhibitor come from Princeton University’s WordNet. Full sources and licences.