Drinking mouthwash can cause anything from mild stomach upset to life- threatening poisoning, depending on how much you drink, what ingredients it contains, and your body size and health.

Quick Scoop

  • A tiny accidental swallow while rinsing is usually harmless , especially for adults.
  • Swallowing mouthfuls or drinking it on purpose can cause alcohol poisoning, chemical poisoning, and organ damage, and in extreme cases can be fatal.
  • Kids, pets, and people with alcohol problems are at especially high risk.
  • If someone has drunk a lot of mouthwash or has symptoms (confusion, trouble breathing, vomiting), this is an emergency: call your local poison center or emergency services right away.

What’s Actually In Mouthwash?

Most standard mouthwashes contain a mix of ingredients that are safe to spit out, but not safe to drink in quantity.

  • Ethanol (alcohol), often very high strength (sometimes 20–27% or more).
  • Other alcohols/solvents like menthol, eucalyptol, and sometimes small amounts of more toxic alcohols such as methanol.
  • Antiseptics such as chlorhexidine or cetylpyridinium chloride.
  • Hydrogen peroxide in some “whitening” rinses.
  • Fluoride in many cavity‑prevention mouthwashes.

These are fine for short contact in the mouth and then spitting, but drinking them forces your stomach, liver, brain, and other organs to handle doses they’re not built for.

What Happens If You Drink Mouthwash?

1. Small accidental swallow

Think: a quick gulp or a bit you forgot to spit. Most people may experience:

  • No symptoms at all, or
  • Mild stomach upset, slight nausea, bad taste.

For most adults, this usually isn’t an emergency, though you should read the label and call a poison center if you’re worried, pregnant, have health conditions, or it’s a child.

2. Drinking several mouthfuls or more

This is where things become serious.

Common short‑term effects include:

  • Nausea, vomiting, diarrhea, stomach pain.
  • Dizziness, drowsiness, headache, confusion.
  • Slurred speech, impaired coordination, acting “drunk.”
  • Changes in heart rate, low blood pressure, low blood sugar, low body temperature.
  • Breathing that becomes slow, shallow, or difficult.
  • Loss of consciousness, coma, and in severe cases, death.

This happens because:

  • The high‑proof ethanol can cause alcohol poisoning much like drinking a lot of liquor in a short time.
  • Other toxic chemicals (like certain antiseptics, hydrogen peroxide, and methyl salicylate) can damage the gut, affect the heart, and disturb blood chemistry.
  • Fluoride at high doses can cause fluoride poisoning with severe vomiting, abdominal pain, and, in extreme cases, heart and nervous‑system problems.

3. Long‑term or repeated drinking

Some people with alcohol dependence drink mouthwash regularly for the alcohol content.

Over time, this can lead to:

  • Alcohol use disorder or worsening of an existing addiction.
  • Liver and kidney damage and higher risk of liver disease and organ failure.
  • Neurological problems such as memory loss, cognitive decline, seizures, and nerve damage.
  • Ongoing gastrointestinal issues: ulcers, irritation, frequent vomiting, abdominal pain.
  • Oral health damage: gum disease, enamel erosion, and chronic dry mouth.

Some reports also note that high, repeated fluoride intake from drinking mouthwash can harm kidneys and the brain over time, especially in younger people.

Can Mouthwash Get You “Drunk”?

Yes, you can get intoxicated from some mouthwashes because many have high ethanol content.

  • Symptoms mimic regular alcohol intoxication: slurred speech, poor balance, altered behavior, confusion.
  • The problem: you’re not only getting ethanol; you’re also ingesting other chemicals not meant for drinking, which increases the risk of poisoning and organ damage compared with drinking beverage alcohol.

Some addiction treatment centers warn that using mouthwash as a substitute for alcohol is a red flag for severe alcohol use disorder and carries extra medical risks.

Forum & “Trending” Angle

People do talk about this online, often in a half‑joking way, but the underlying topic is serious.

  • On Q&A forums like Reddit, you’ll see posts such as “I drank mouthwash on purpose, will I be okay?” where users describe drinking several capfuls and get a mix of alarmist jokes and reassurances.
  • Addiction and recovery blogs and treatment centers have increasingly highlighted mouthwash drinking as a hidden form of alcohol misuse, especially in the last few years.
  • Dental and medical sites now publish clear warnings about alcohol toxicity, fluoride poisoning, and GI damage when discussing “what happens if you swallow mouthwash.”

Despite the occasional memes or jokes, experts consistently stress that intentional mouthwash drinking is not safe and should be treated like any other toxic ingestion or substance misuse.

What To Do If Someone Drinks Mouthwash

If it was a small accidental swallow

  • Check the bottle label (look for warnings or special ingredients like high fluoride or peroxide).
  • Rinse the mouth with water and drink a bit of water or milk unless the label says otherwise.
  • Call your local poison center or a medical professional if it was a child, a large “swig,” or there are any symptoms like vomiting, drowsiness, or confusion.

If it was a large amount or on purpose

This is an emergency situation.

  • Call emergency services or a poison hotline immediately.
  • Do not force vomiting unless a medical professional specifically instructs it; it can sometimes make things worse.
  • If the person is unconscious, has trouble breathing, or is having a seizure, seek emergency help right away and follow their instructions.

If the drinking was intentional and related to self‑harm or addiction, medical care plus mental‑health or addiction support is crucial.

Mini FAQ Table (HTML)

Below is an HTML table (as requested) summarizing key points.

html

<table>
  <thead>
    <tr>
      <th>Situation</th>
      <th>What usually happens</th>
      <th>What to do</th>
      <th>How serious is it?</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>Adult swallows a small accidental sip</td>
      <td>Often no symptoms or mild nausea/upset stomach.[web:4][web:6][web:10]</td>
      <td>Rinse mouth, drink some water, check label, call poison center if unsure.[web:4][web:6][web:10]</td>
      <td>Usually low risk, but get advice if symptoms appear or special ingredients are present.[web:4][web:6][web:10]</td>
    </tr>
    <tr>
      <td>Child swallows a mouthful</td>
      <td>Higher risk of vomiting, drowsiness, alcohol or fluoride toxicity.[web:3][web:5][web:10]</td>
      <td>Call poison center or emergency services immediately and follow instructions.[web:3][web:5][web:10]</td>
      <td>Potentially serious; children are more vulnerable to poisoning.[web:3][web:5][web:10]</td>
    </tr>
    <tr>
      <td>Someone drinks several big swigs or a bottle (teen/adult)</td>
      <td>Nausea, vomiting, confusion, slurred speech, dizziness; risk of coma, organ damage, or death.[web:1][web:3][web:5][web:7]</td>
      <td>Emergency situation: call emergency services, do not delay, do not induce vomiting unless told to.[web:3][web:5][web:7][web:10]</td>
      <td>High risk; can be life-threatening due to alcohol and chemical poisoning.[web:1][web:3][web:5][web:7]</td>
    </tr>
    <tr>
      <td>Regularly drinking mouthwash to get drunk</td>
      <td>Alcohol dependence, liver/kidney damage, neurological problems, GI issues, fluoride and chemical toxicity over time.[web:1][web:3][web:5][web:7]</td>
      <td>Seek addiction treatment, medical evaluation, and mental health support.[web:1][web:3][web:5][web:7]</td>
      <td>Very serious long-term health risks plus addiction concerns.[web:1][web:3][web:5][web:7]</td>
    </tr>
  </tbody>
</table>

Bottom Note

Information gathered from public forums or data available on the internet and portrayed here.

If you or someone near you has just drunk a significant amount of mouthwash, treat it as urgent and contact local medical or poison services immediately.