
Exam traps: X vs Y9 min read
Mycin vs micin: one letter, two organisms
The endings mark the organism that produced the antibiotic, not how it works. Why gentamicin and erythromycin are spelled differently and share nothing else.

The endings mark the organism that produced the antibiotic, not how it works. Why gentamicin and erythromycin are spelled differently and share nothing else.

Stems are assigned by mechanism, so -olol, -pril and -sartan predict the target before you memorise anything. How the system works and exactly where it stops.