| Answer | Crossword Clue |
|---|---|
| practolol | a drug formerly used to treat cardiac arrhythmia |
| practolols | PRACTOLOL, a drug formerly used to treat cardiac arrhythmia |
| quinidine | a cinchona alkaloid, which is an optically active isomer of quinine and is used to treat cardiac arrhythmia |
| quinidines | QUINIDINE, a cinchona alkaloid, which is an optically active isomer of quinine and is used to treat cardiac arrhythmia |
| propranolol | a beta-blocker drug used mainly in the treatment of cardiac arrhythmia |
| propranolols | PROPRANOLOL, a beta-blocker drug used mainly in the treatment of cardiac arrhythmia |
