Evidence update: The drug-label and public-health sources linked in this guide were checked on August 8, 2026. This is general education, not an individual diagnosis or prescription.
A possible naproxen overdose should be handled with Poison Control or medical professionals using the exact product, amount, time, and patient details.
What to do now
If too much naproxen may have been taken, do not wait for symptoms and do not guess from an online dose chart. In the United States, call Poison Control at 1-800-222-1222 or use webPOISONCONTROL. Call emergency services for collapse, seizure, severe confusion, breathing difficulty, heavy bleeding, or an unresponsive person.
Information Poison Control will need
- Age and approximate weight of the person.
- Exact product name, strength, formulation, and package.
- Maximum possible number of tablets or amount of liquid.
- Time or time range of ingestion.
- Symptoms and medical conditions.
- Other medicines, alcohol, or substances involved.
Possible overdose symptoms
Nausea, vomiting, abdominal pain, drowsiness, ringing in the ears, unsteady walking, and disorientation can occur. A large ingestion can lead to gastrointestinal bleeding, kidney failure, acid-base disturbance, seizure, coma, or altered mental status. The absence of early symptoms does not replace case-specific advice.
A double dose is still a case-specific question
An accidental extra dose is not automatically a medical emergency, but risk depends on the exact product, amount, timing, age, kidney function, ulcer history, pregnancy, and other medicines. Do not take another dose or try to “correct” the schedule until a pharmacist, prescriber, or poison specialist advises what to do.
What not to do
- Do not induce vomiting unless a poison specialist explicitly instructs it.
- Do not give another medicine to counteract naproxen without advice.
- Do not rely on a search result that lacks the exact product and patient details.
- Do not delay the call while trying to calculate a toxic dose.
Preventing repeat errors
Keep products in original containers, record dose times, separate similarly named bottles, review combination medicines for hidden NSAIDs, and use one shared medication list in households where more than one person helps with dosing.
Common questions
What if the person feels fine?
Call Poison Control anyway when the amount or timing is uncertain. Early lack of symptoms does not provide a complete risk assessment.
Should I wait for the prescriber to call back?
Poison Control is available 24 hours in the United States for immediate case-specific guidance. Emergency symptoms still require emergency services.
Is an extra dose always dangerous?
Not always, but the answer depends on product, amount, age, kidney function, ulcer history, and other substances. A poison specialist can make that distinction.
Related guides on this site
- Naproxen Sodium and Face Swelling: Emergency Warning Signs
- Naproxen Sodium and Stroke Warning Signs: What Patients Should Know
- Blistering Rash During Naproxen Use: An Urgent Warning
Primary sources and scope
The links below are the evidence base for the label statements in this article. Product labels can change, so the package or dispensing label in hand remains the controlling instruction.
- Naproxen overdose guidance — Poison Control
- Prescription naproxen sodium overdosage section — DailyMed
- Naproxen sodium Drug Facts overdose direction — DailyMed
- Naproxen drug information — MedlinePlus
Urgent boundary: call local emergency services for chest pressure, severe breathing difficulty, one-sided weakness, fainting, vomiting blood, black tar-like stool, or rapidly progressing facial or throat swelling. In the United States, a possible overdose can also be discussed with Poison Control at 1-800-222-1222.