Pharmacology · patient case question
Which is the best post-operative analgesic regimen?
Patient case: History of substance abuse — post-operative analgesia
Scenario: A patient with a history of ALCOHOL/DRUG ABUSE has had third molars extracted. Which medication best manages the post-operative pain?
Show answer and explanation
Correct answer: D. Ibuprofen 400 mg + acetaminophen 325 mg
- A. Hydrocodone is likewise an opioid and carries the same relapse risk.
- B. Codeine is an OPIOID and must be avoided in a patient with a history of substance abuse. It is also a prodrug requiring CYP2D6 activation, giving unpredictable effect between individuals.
- C. Ibuprofen alone at 800 mg does not achieve the analgesia of the combination, and pushes the NSAID dose higher for less benefit.
- D. Correct. Combined IBUPROFEN plus ACETAMINOPHEN is SYNERGISTIC — the two act by different mechanisms (peripheral COX inhibition and central analgesia) and the combination has been shown to equal or exceed opioid combinations for third molar pain, with no addiction potential. This is the current standard of care and is the clear choice in a patient with a substance use history.
Note: The current ADA position favours NSAID + acetaminophen as first-line for acute dental pain, with opioids reserved for cases where non-opioid therapy is inadequate or contraindicated.