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aspirin vs duloxetine

Side-by-side comparison of aspirin and duloxetine. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

moderate Known Drug Interaction

7.4 Drugs that Interfere with Hemostasis (e.g., NSAIDs, Aspirin, and Warfarin) Serotonin release by platelets plays an important role in hemostasis. Epidemiological studies of the case-control and cohort design that have demonstrated an association between use of psychotropic drugs that interfere with serotonin reuptake and the occurrence of upper gastrointestinal bleeding have also shown that concurrent use of an NSAID or aspirin may potentiate this risk of bleeding.

Recommendation: Use caution when taking these together and tell your doctor immediately if you notice unusual bruising or bleeding.

Drug Class
aspirin Antiplatelet / NSAID
duloxetine Serotonin-Norepinephrine Reuptake Inhibitor (SNRI)
Type
aspirin Over-the-Counter
duloxetine Prescription
Summary
aspirin

Aspirin is a common medicine used to relieve minor pain. It can also be prescribed by your doctor for other uses.

duloxetine

Duloxetine is a medicine that can help treat depression and anxiety. It can also help with certain types of pain.

What It Treats
aspirin

Aspirin is used to temporarily relieve minor aches and pains. However, it works slowly. It will not quickly relieve headaches or other symptoms that need immediate relief. Ask your doctor about other uses for this medicine.

duloxetine

Duloxetine can treat major depressive disorder and generalized anxiety disorder in adults and children (7 years and older). It can also treat diabetic nerve pain, fibromyalgia, and chronic muscle or bone pain in adults. In children, it can treat fibromyalgia (13 years and older).

How It Works
aspirin

Aspirin belongs to a class of drugs called NSAIDs and antiplatelets. It works by reducing substances in the body that cause pain and inflammation. It also helps to prevent blood clots.

duloxetine

Duloxetine is a type of drug called an SNRI. It works by increasing the levels of serotonin and norepinephrine in your brain. These chemicals can help improve mood and reduce pain.

Common Side Effects
aspirin
  • Upset stomach
  • Heartburn
duloxetine
  • Nausea
  • Dry mouth
  • Sleepiness
  • Constipation
  • Decreased appetite
FAERS Reports
aspirin
  • Tiredness 31,969
  • Shortness of breath 27,184
  • Feeling sick to your stomach 26,582
  • Loose stools 26,451
  • Feeling lightheaded 22,392
duloxetine
  • Tiredness 4,788
  • Feeling sick to your stomach 4,783
  • Aches or soreness 3,698
  • Head pain 3,653
  • Loose stools 3,262
Serious Warnings
aspirin

No specific warnings noted.

duloxetine

Antidepressants may increase the risk of suicidal thoughts and behaviors in children, teenagers, and young adults. Watch closely for worsening depression or suicidal thoughts. Tell your doctor right away if you notice any changes in mood or behavior.

Pregnancy
aspirin

Ask your doctor for advice if you are pregnant or breastfeeding.

duloxetine

Using duloxetine in the last month of pregnancy may cause problems in the newborn. Talk to your doctor about the risks and benefits of taking duloxetine during pregnancy. Women who stop taking antidepressants during pregnancy are more likely to experience a relapse of depression.

Also Compare, Nearby Drugs

How to Read This aspirin vs duloxetine Comparison

aspirin is classified in the Antiplatelet / NSAID drug class, while duloxetine sits within the Serotonin-Norepinephrine Reuptake Inhibitor (SNRI) class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are split between OTC and prescription status, which affects access and supervision.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, aspirin has 134,578 submissions while duloxetine has 20,184. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known moderate interaction flagged in FDA labeling, attributed to both of these medicines can make it harder for your blood to clot, which raises your risk of having a serious stomach bleed.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot substitute for clinical judgment. Effectiveness, tolerability, drug-drug interactions with your other medications, kidney and liver function, pregnancy status, insurance formulary, and price all feed into a decision that only a licensed prescriber can make responsibly. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This page is for educational purposes only, is not medical advice, and should not be used to self-switch between aspirin and duloxetine - always consult your physician or pharmacist first.

Important: This comparison is for informational purposes only. Drug effects vary between individuals. Always consult your doctor or pharmacist for personalized medical advice.