What side effects should I expect from aspirin?
Aspirin can cause side effects that you should discuss with your doctor, especially if you take it regularly or at higher doses. The most common concerns are stomach and bleeding-related effects, since aspirin can irritate the stomach lining and increase bleeding risk.
What risks matter most for me?
Your personal risk depends on your health history and other medications. Side-effect risk is often higher if you:
- Have a history of stomach ulcers or gastrointestinal bleeding
- Take blood thinners or other medicines that affect bleeding
- Have uncontrolled high blood pressure
- Have a bleeding disorder
- Have aspirin sensitivity or asthma that worsens with aspirin
How should I talk to my doctor about aspirin?
When discussing aspirin, bring up:
- The dose and how often you plan to take it
- Why you want to take it (pain relief vs. heart/stroke prevention)
- Your past history of ulcers, reflux, bleeding, or reactions to aspirin/NSAIDs
- All medications and supplements you take, including “as needed” products
What should prompt urgent medical attention?
Stop and seek urgent care if you develop signs of serious bleeding, such as vomiting blood, black or tarry stools, or unusual bruising or prolonged bleeding.
Can aspirin be safer if my doctor recommends it?
Sometimes doctors adjust the dose, recommend a different formulation, or choose an alternative medicine based on your risk. Your clinician can also advise strategies to reduce stomach irritation when aspirin is appropriate.
If I haven’t discussed it yet, what’s the next step?
If you have not talked with your doctor about aspirin side effects, the next step is to ask whether it’s appropriate for your specific situation and what side effects you should watch for given your medical history and current medications.