Home > Patients & Visitors > Health Library > Aspirin
Aspirin (such as Anacin, Bayer, or Bufferin) relieves pain
and reduces fever and inflammation.
Do not give aspirin to anyone younger than 20 unless
your doctor tells you to do so because of the risk of
Be sure to follow the
nonprescription medicine precautions.
Dosage: Adults (age 20 and older), 650 mg every 4 hours, as needed.
Maximum adult dose is 4,000 mg in a 24-hour period.
Aspirin is a
nonsteroidal anti-inflammatory drug (NSAID). For information about other
nonsteroidal anti-inflammatory drugs (NSAIDs).
Side effects of aspirin include:
Stop taking aspirin and call a health professional if side
effects do not go away within 4 hours after the last dose of aspirin was
Reasons not to take aspirin
Do not take aspirin if you:
Do not take aspirin if you are taking:
ByHealthwise StaffPrimary Medical ReviewerWilliam H. Blahd, Jr., MD, FACEP - Emergency MedicineSpecialist Medical ReviewerDavid Messenger, MD
Current as ofOctober 14, 2016
Current as of:
October 14, 2016
William H. Blahd, Jr., MD, FACEP - Emergency Medicine & David Messenger, MD
To learn more about Healthwise, visit Healthwise.org.
© 1995-2016 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.