What two medications could be given interchangeably to a patient having seizures or convulsions?

• A. Fentanyl or Morphine
• B. Lorazepam or Oxazepam
• C. Diazepam or Lorazepam
• D. Midazolam 5mg/mL (Versed) or Diazepam (Valium)

Answer: (D)

When managing an acute seizure, you want a medication that rapidly enhances inhibitory GABA signaling in the brain to quickly stop the convulsions. Benzodiazepines are the go-to class for this because they boost the effect of GABA at the GABA-A receptor, rapidly quieting overexcited neurons.

Midazolam and diazepam share this mechanism and are both highly effective for terminating seizures. They also offer flexible routes of administration (for example, injectable or intranasal/buccal forms in many settings), which makes them usable interchangeably depending on what’s available and how the patient is being treated. Midazolam often provides very fast onset with a relatively short duration, which is useful in the field or emergency room. Diazepam also works quickly and has a longer duration due to active metabolites, which can help prevent early recurrence but may prolong sedation.

That compatibility and versatility in route and onset is why these two are the best interchangeable options for acute seizure control. Other drug choices either do not address the seizure mechanism as directly (like opioids) or have pharmacokinetic profiles that make them less interchangeable in the acute setting.