Clue: Antibiotic fix covering nurse in charge getting sick (10)
Answer: PENICILLIN
Explanation: Antibiotic fix covering nurse in charge getting sick (10)
**PIN** ("fix") *covering* **E**(nrolled) **N**(urse)** I**(n) **C**(harge) + **ILL**, so **P(EN-IC-ILL)IN