Which medication is identified in the material for controlling autonomic instability?
Answer
Magnesium
Explanation
The source specifically associates **magnesium** with control of autonomic instability. Metronidazole is named as antibiotic therapy, HTIG as antitoxin, and vecuronium appears among agents for spasm control. **Key takeaway:** Magnesium is the listed option for autonomic instability.\n\n**Glossary:** **Autonomic instability**: dysregulation of involuntary body functions.