CITRATE
Set to 2 different clues across 2 published puzzles, most often “Sildenafil ___ (Viagra's active ingredient)” — The New York Times, Saturday, 3 November 2001.
7 letters
Every clue on record, most used first
- Sildenafil ___ (Viagra's active ingredient)once
The New York Times — Saturday, 3 November 2001
- Sildenafil ___ (Viagra's generic name)once
The New York Times — Friday, 27 April 2001