If you find the material on this website useful, you will find that the two books
for PACES and KEYS to SUCCESS in Medicine
complement the material on these sites
and will enhance your studying and revision
A 36-year-old male presents with a history of pain in his
neck. On examination you note that his neck is twisted with the chin pointing
towards the left shoulder. He is unable to move the neck normally.
Which one of the following drugs may be responsible for his