Aspirin

Trade Names: Novasen, ASA, Bufferin

Uses

Adverse Effects

Considerations for PT

  1. Consider timing for pain relief prior to Physiotherapy intervention.Consider timing for pain relief prior to Physiotherapy intervention.
  2. Minimal relevant common adverse effects. Monitor for any symptoms of rare adverse effects as appropriate.

Route of Administration

  1. Oral (Extended Release)
  2. Oral (Immediate Release)
  3. Rectal

Mechanism of Action

Acts by inhibiting platelet aggregation and production of prostaglandins, causing:

  • Decreased pain signaling to the central nervous system
  • Decreased signaling to the central nervous system to raise body temperature
  • Reduced inflammation, swelling, and joint pain
  • Prevention of clot formation

Drug Dynamics

Time to Peak Effect

2 hours to 4 hours

Duration of Action

8 hours to 24 hours

Time to Onset

1 hour to 4 hours

Resources

*Some links accessed via VCH Intranet

Last updated: July 15, 2026