Combining diclofenac with acetaminophen or acetaminophen-codeine after oral surgery: a randomized, double-blind...

Area of Science:

• Pharmacology
• Pain Management
• Oral Surgery

Background:

• Post-surgical pain, particularly after wisdom tooth extraction, requires effective analgesic strategies.
• Commonly used analgesics include acetaminophen (paracetamol), codeine, and non-steroidal anti-inflammatory drugs (NSAIDs) like diclofenac.

Purpose of the Study:

• To compare the efficacy and safety of various analgesic combinations for moderate to strong post-wisdom tooth extraction pain.
• To evaluate the effectiveness of combining enteric-coated diclofenac with acetaminophen, with or without codeine.

Main Methods:

• A randomized, double-blind study involving 120 patients with post-surgical pain.
• Patients received single oral doses of: enteric-coated diclofenac (100 mg), acetaminophen (1 g), acetaminophen (1 g) plus codeine (60 mg), diclofenac (100 mg) plus acetaminophen (1 g), or diclofenac (100 mg) plus acetaminophen (1 g) plus codeine (60 mg).
• Pain intensity and relief were self-recorded over 8 hours.

Main Results:

• Acetaminophen plus codeine demonstrated superior analgesia compared to acetaminophen alone, confirming assay sensitivity.
• Combinations of diclofenac plus acetaminophen (with or without codeine) showed superior analgesic effects compared to diclofenac, acetaminophen, or acetaminophen plus codeine alone.
• Adding codeine to the diclofenac-acetaminophen combination increased the incidence of side effects.

Conclusions:

• The combination of enteric-coated diclofenac and acetaminophen provides superior and prolonged analgesia for acute pain.
• This combination offers a better side effect profile compared to acetaminophen plus codeine.
• Results support the clinical use of combining diclofenac with acetaminophen for managing acute pain conditions.