Oxycodone/Acetaminophen Dosing Guidelines

Initial Dosing Strategy

The American College of Emergency Physicians recommends starting with oxycodone 5 mg/acetaminophen 325 mg, one tablet every 4-6 hours as needed for pain, to minimize adverse effects in opioid-naïve patients with acute moderate-to-severe pain 1
Prescribe oxycodone/acetaminophen as "as needed" (PRN) rather than scheduled dosing to minimize total opioid exposure and side effects, according to the American College of Emergency Physicians and other guideline societies 1, 2
The maximum daily dose of acetaminophen should not exceed 3,900 mg, with a maximum of 12 tablets per 24 hours, as recommended by the FDA and supported by the American College of Emergency Physicians 1

The FDA and guideline societies recommend explicitly counseling patients to avoid all other acetaminophen-containing products to prevent hepatotoxicity 2, 3
The acetaminophen component is now limited to 325 mg or less per tablet in combination products, as recommended by the FDA and supported by the American College of Emergency Physicians 1
For elderly patients (≥65 years), start with lower doses and extend dosing intervals due to increased risk of respiratory depression, as recommended by the American Geriatrics Society and supported by guideline societies 2

Limit prescribing to the shortest duration necessary for acute pain, typically 3-5 days, as recommended by the Centers for Disease Control and Prevention and supported by guideline societies 2, 3
Oxycodone/acetaminophen is appropriate for severe traumatic injuries, invasive surgeries, and other severe acute pain when NSAIDs are contraindicated or ineffective, according to the American College of Surgeons and supported by guideline societies 2
Nonopioid therapies (NSAIDs, acetaminophen alone) are equally or more effective for many common acute pain conditions, including low back pain, musculoskeletal injuries, minor surgeries, and dental pain, as recommended by the American College of Physicians and supported by guideline societies 2

Do not use opioid-acetaminophen combinations as first-line therapy when nonopioid alternatives may be effective, as recommended by the American College of Physicians and supported by guideline societies 2, 3
Do not prescribe on a scheduled basis rather than as-needed, as this unnecessarily increases opioid exposure, according to the American College of Emergency Physicians and supported by guideline societies 2, 3
Do not fail to account for total acetaminophen from all sources when calculating daily limits, as recommended by the FDA and supported by guideline societies 2, 3
Do not prescribe extended-release oxycodone formulations for acute pain—these are for opioid-tolerant patients with chronic pain only, as recommended by the American College of Emergency Physicians and supported by guideline societies 1