By Pat Anson, PNN Editor

Acetaminophen (Tylenol) is superior to non-steroidal anti-inflammatory drugs (NSAIDs) in treating acute pain in patients recovering from arm and leg trauma, according to new research published in the journal Academic Emergency Medicine. It’s the latest in a string of studies that recommend the use of non-opioid pain relievers for acute pain after discharge from a hospital.

The research is based on a study of 1,500 adults in the North African nation of Tunisia, nearly half of whom had bone fractures. Upon discharge from a hospital emergency department, the patients received either acetaminophen, a high-dose NSAID, or a combination of the two. Acetaminophen is commonly called paracetamol outside the United States.

After seven days, researchers found that nearly two-thirds (61.8%) of patients receiving paracetamol alone were “satisfied” or “very satisfied” with their pain relief. Only 11.4% required another oral pain reliever. The other two groups had similar satisfaction scores, but had lower rates of medication adherence. Side-effects such as vomiting and gastrointestinal pain were also more common in patients who received NSAIDs.  

“This study found that the combination of a high‐dose NSAID with paracetamol does not increase the analgesic effect compared to paracetamol alone. We also found that paracetamol alone is superior to high‐dose NSAID alone for post-traumatic extremity pain,” wrote lead author Mohamed Amine Msolli, MD, an emergency room physician at Fattouma Bourguiba University Hospital in Tunisia.

“Taking into account its superior efficacy and tolerability, paracetamol appears to be the most suitable first‐line therapy for managing mild to moderate posttraumatic extremity pain after discharge from the ED.”

Opioid analgesics are not widely available in Tunisia and most other Middle East countries, and were not included in the study. Nevertheless, the study findings are being cited as evidence that paracetamol is superior to both NSAIDs and opioids in treating acute trauma pain.

“The surprising efficacy of paracetamol over an NSAID, as shown by a 6.4% lower need for additional oral analgesics, may impact prescribing practices,” Andrew Chang, MD, a professor of emergency medicine at Albany Medical Center, said in a statement.

“Many ED patients who have a contraindication to NSAIDs but require analgesics upon ED discharge might be prescribed an opioid. Given the ongoing opioid epidemic, this study lends evidence to support the use of acetaminophen alone in such patients."

But the risk of long-term opioid use after an emergency room visit is actually quite low. A large 2017 study by the Mayo Clinic found that only about one percent of emergency room patients given an opioid prescription progressed to long term use.

Acetaminophen also has risks that are not acknowledged in the Tunisia study. Excessive use of acetaminophen can lead to liver, kidney, heart and blood pressure problems. Acetaminophen overdoses are involved in about 500 deaths and over 50,000 emergency room visits in the U.S. annually.