Hydrocodone-Acetaminophen Dosing Guidelines

Standard Dosing Recommendations

The Centers for Disease Control and Prevention recommends using the lowest effective dose for the shortest duration consistent with treatment goals, such as hydrocodone 5 mg/acetaminophen 325 mg, one to two tablets every 4-6 hours as needed for pain, with a maximum daily limit of 8 tablets 1

The Centers for Disease Control and Prevention suggests prescribing hydrocodone-acetaminophen as "as needed" rather than on a scheduled basis, such as one tablet not more frequently than every 4 hours as needed for moderate to severe pain 1

When calculating total daily acetaminophen intake, consider all sources of acetaminophen, including over-the-counter medications, to avoid hepatotoxicity, as recommended by the Centers for Disease Control and Prevention 1

For elderly patients or those with hepatic or renal impairment, consider starting with lower doses and careful titration, as recommended by the Centers for Disease Control and Prevention 1
In patients with renal impairment, use opioids with caution and at reduced doses and frequency, according to the European Society for Medical Oncology 2

Opioid therapy has an important role for acute pain related to severe traumatic injuries, invasive surgeries, and other severe acute pain when nonsteroidal anti-inflammatory drugs and other therapies are contraindicated or likely to be ineffective, as recommended by the Centers for Disease Control and Prevention 1
Nonopioid therapies are at least as effective as opioids for many common acute pain conditions, including low back pain, neck pain, musculoskeletal injuries, minor surgeries, dental pain, kidney stone pain, and headaches, according to the Centers for Disease Control and Prevention 1

For acute pain, prescribe hydrocodone-acetaminophen only for the expected duration of pain severe enough to require opioids, as recommended by the Centers for Disease Control and Prevention 1
If hydrocodone-acetaminophen is taken around the clock for more than a few days, implement a taper to minimize withdrawal symptoms, as suggested by the Centers for Disease Control and Prevention 1

Consider prescribing preventive medications for common opioid side effects, such as laxatives for constipation, according to the European Society for Medical Oncology 2

Using opioid-acetaminophen combinations as first-line therapy when nonopioid alternatives may be effective should be avoided, as recommended by the Centers for Disease Control and Prevention 1
Prescribing hydrocodone-acetaminophen on a scheduled basis rather than as-needed should be avoided, according to the Centers for Disease Control and Prevention 1
Failing to taper hydrocodone-acetaminophen if used around the clock for more than a few days should be avoided, as recommended by the Centers for Disease Control and Prevention 1

The Centers for Disease Control and Prevention recommends that hydrocodone has a 1.0 conversion factor, where 1 mg hydrocodone equals 1 morphine milligram equivalent (MME), and dosages ≥50 MME/day require careful reassessment of benefits versus risks, with dosages ≥90 MME/day showing progressively diminishing returns in pain relief with escalating overdose risk 3
For patients taking Norco 10 mg/325 mg, at maximum dosing, this equals 60 morphine milligram equivalents (MME), approaching the 50 MME/day threshold requiring heightened monitoring, as recommended by the MMWR Recommendations and Reports 3

The American College of Emergency Physicians suggests that nonopioid alternatives, such as NSAIDs (ibuprofen, naproxen), are superior to codeine-acetaminophen combinations and comparable to opioid-acetaminophen combinations for many acute pain conditions, and should be used first for low back pain, neck pain, musculoskeletal injuries, minor surgeries, dental pain, kidney stone pain, and headaches 4
The American Academy of Pain Medicine recommends that a recent randomized trial found no clinically important difference between ibuprofen/acetaminophen and oxycodone/acetaminophen for acute extremity pain in the emergency department, supporting the use of nonopioid alternatives 5

The National Comprehensive Cancer Network recommends prescribing prophylactic laxatives to prevent opioid-induced constipation in patients taking Norco 6
The Centers for Disease Control and Prevention advises that before increasing total opioid dosage to ≥50 MME/day, healthcare providers should pause and carefully reassess individual benefits and risks, and if increasing dosage, use the smallest practical increment, as recommended by the MMWR Recommendations and Reports 3