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What to do if…
you accidentally take someone else’s prescription medication

Produced and maintained by PanicStation.org Published: Last reviewed: Editorial policy USA guide

Short answer

Before taking another dose from either medication container, call Poison Help now at 1-800-222-1222 for case-specific advice. Call 911 immediately if the person collapses, has a seizure, has trouble breathing, or cannot be awakened.

Do not do these things

  • Do not wait for symptoms before contacting Poison Help.
  • Do not try home remedies or make yourself vomit.
  • Do not take an extra dose of your own medication to compensate unless Poison Help or a clinician tells you to.
  • Avoid alcohol and recreational drugs while you are waiting for Poison Help advice.
  • Do not drive yourself if you feel dizzy, drowsy, confused, weak, or unwell.
  • Do not throw away the bottle, blister pack, or box.

What to do now

  1. Check for emergency signs.
    Call 911 immediately if the person collapses, has a seizure, has trouble breathing, or cannot be awakened.

  2. If there are no emergency signs, call Poison Help now: 1-800-222-1222.
    Say that you accidentally took someone else’s prescription medication. The national line connects callers with poison-center support in every U.S. state and territory.

  3. Keep the container nearby while you call.
    Have the medication name, strength, amount taken, approximate time, age, approximate weight, symptoms, other medications, alcohol, and other substances ready if available. Do not delay the call to gather every detail.

  4. Reduce the risk of a fall or further mistake.
    Put the medication container aside so no more tablets are taken by accident. If dizziness, drowsiness, confusion, or weakness begins, ask someone to stay with you if possible. Sit or lie down away from stairs, showers, cooking, and other fall hazards.

  5. If an opioid may be involved, treat slowed or shallow breathing, difficulty waking, or inability to awaken as an emergency.
    Call 911 immediately. Give naloxone as quickly as possible if it is available, following the product instructions. Lay the person on their side to reduce choking risk and stay with them until emergency help arrives. Naloxone is temporary, and more than one dose may be needed in some circumstances.

  6. Follow the destination advice you are given.
    Go where Poison Help, the 911 dispatcher, or a clinician directs. Bring the bottle, blister pack, or box if you are told to seek in-person care.

What can wait

  • You do not need to search through long lists of side effects before calling.
  • You do not need to decide now whether to make a complaint, complete paperwork, or investigate how the mix-up happened.
  • You do not need to reorganize every medication bottle today.

Important reassurance

Medication mix-ups can happen even when someone is usually careful. Poison experts routinely handle medication exposures and can give next steps based on the specific medication, amount, timing, and symptoms.

Scope note

These are immediate first steps only. Later decisions, including medication review and preventing another mix-up, may need help from a pharmacist, clinician, or other appropriate specialist.

Important note

This is general information, not medical diagnosis, personalized treatment, or professional advice. Call 911 for emergency signs. For immediate case-specific guidance about a possible poisoning or medication exposure in the USA, call Poison Help at 1-800-222-1222.

Additional Resources

Closely connected guides that may be useful during the same situation or its immediate aftermath.

About this guide

This guide was produced and is maintained by PanicStation.org using its published editorial process. Official and specialist sources are checked where relevant, and AI-assisted tools may be used for drafting, organisation, and consistency checks. The site operator remains responsible for publication, revision, and removal decisions.

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