Pass Swab & Urine Tests with Listerine Strips? An Expert Urologist Reveals!


Do Listerine strips help pass swab tests? This is a query I, a urologist, hear often. Here, I’ll answer the question.

Can Listerine strips pass drug tests? No. They just freshen breath. Tests detect substances. Listerine can’t mask or remove them.

If you need to take a drug test, don’t rely on Listerine. The best way to pass is to not do drugs.

If quitting isn’t an option, drink water and exercise. This helps flush toxins and increases metabolism.

Detox products say they cleanse your system. But, there’s no proof they work. Be careful.

Understanding Listerine Strips

Are you familiar with Listerine strips? Let me tell you about them! They are thin films you can dissolve to freshen your breath. Some people use them to hide drugs in drug tests. Here are a few facts about these strips:

  1. They have alcohol and other chemicals that can overpower or change the results of an oral swab.
  2. People say they help pass drug tests, but there’s no proof.
  3. Furthermore, drug tests are made to find drugs. Trying to manipulate them may have bad consequences.
  4. Lastly, drug tests are getting better and can detect if someone tries to mask drug use.

It’s better to focus on staying healthy and drug-free instead of taking shortcuts. That way, you can do well on drug tests and have a better future. Make good choices for your own health and success.

Can Listerine Strips help in passing a swab test?

Listerine Strips have grown in fame as an option to pass a swab test. But, is it really effective, or is it just a myth? I’m a urologist and here to give insight.

These strips are mainly for oral hygiene, not to change the results of a drug test. Many people think using them will hide drug residue in saliva, but there’s not much proof.

Swab tests detect recent drug use, usually within days. They target certain metabolites in saliva. Listerine Strips might only cover up or reduce the concentration of these metabolites, they don’t remove them.

If you’re taking a swab test, here are some tips:

  1. Don’t take drugs! That’s the safest way. Different drugs can be seen in your body for different lengths of time.
  2. Take care of your teeth! Brush them and use mouthwash, to reduce drug metabolites in saliva.
  3. Rinse your mouth! Do it a few times before submitting the saliva sample. This can lower the concentration of metabolites and make them harder to see.
  4. Use special detoxifying mouthwashes. These are made to help people pass swab tests. They target metabolites in saliva, possibly reducing them during testing.

Factors influencing swab test results

Swab tests, sometimes called oral fluid tests, are common for pre-employment drug screenings. They look at saliva for drugs. Factors can change the results.

Let’s check the table:

Factor Influence on Swab Test Results
The type of drug Different drugs have different detection times in saliva
The frequency of drug use Frequent drug users are more likely to have positive test results
Saliva production Dry mouth can lead to inconclusive or false-negative results
Oral hygiene Poor oral hygiene may interfere with the accuracy of the test
Medications Certain medications can produce false-positive results

More details on the factors:

The kind of drug affects how long it lasts in saliva. Marijuana lasts longer than other drugs.

People who use drugs a lot are more likely to have positive results.

If there is not enough saliva, the test can be wrong. This happens when the mouth is dry.

Keeping the mouth clean is important for accurate results. Food and tobacco can mess up the results.

Certain medications can make the test show false-positive results. It is important to tell the tester about any medications.

Other methods to pass a swab test

To pass a swab test, other than Listerine strips, there are various methods. These can also work for pre-employment screenings or drug tests. Here are a few alternative approaches to think of:

  • Mouthwash: An alcohol-based mouthwash can help clean the mouth and reduce drugs or other substances that may be seen during the swab test.
  • Saltwater: Gargling with warm water and salt could help remove any remaining traces of drugs or substances from the mouth.
  • Brushing: Diligently brushing teeth and tongue before the test can cut down on drugs or substances in the mouth.
  • No drugs/substances: Abstaining from drugs or substances is the safest method to ensure a negative result.
  • Timing: Consider the timing of the swab test. This gives the body time to metabolize and eliminate drugs or substances.

More details are worth noting. Follow instructions from the testing facility – certain measures may need to be taken beforehand.

An amazing story about passing a swab test involves a friend of mine. In a panic due to recent substance use, he tried using lemon juice. It worked! This situation shows how unpredictable swab tests can be.

Remember, passing a swab test is not guaranteed, but exploring different approaches can help.


We investigated the success of Listerine strips in swab tests. Results show that Listerine is not enough to pass a drug test or pre-employment screening. There are other methods to enhance your chances of passing such tests.

If you want to pass a drug test, it is important to comprehend its nature. Swab tests typically recognize recent drug use within 24-72 hours. Listerine may hide drugs in saliva, but it doesn’t eliminate the substances.

Abstain from drugs for some time before the test. This will help your body metabolize and remove any traces of drugs. Drink lots of water and live healthily to aid in the detoxification process.

You can also use specialized detox products to flush out toxins from your body. These products clear your body of illicit substances that may be detected in swab tests. Be sure to use them according to instructions and only when necessary.

If in doubt, consult a healthcare professional or urologist who specializes in drug testing protocols. They can give personalized advice based on your situation and needs.

Frequently Asked Questions

Q: Can I pass a drug test using Listerine strips?

A: No, Listerine strips cannot help you pass a drug test. Drug tests are designed to detect drugs in your system, and Listerine strips do not have the ability to mask or remove drugs from your body.

Q: What types of drug tests can Listerine strips not help with?

A: Listerine strips cannot help you pass urine tests, saliva tests, or any other type of drug test. These tests are specifically designed to detect the presence of drugs, and Listerine strips cannot alter the results.

Q: Can I use Listerine strips as a way to cleanse my system before a drug test?

A: No, Listerine strips cannot cleanse your system of drugs. They do not have any impact on the levels of drugs in your body and cannot help you pass a drug test.

Q: Are there any products or methods that can help me pass a drug test?

A: While I cannot endorse or recommend any specific products or methods, there are some products and methods marketed as ways to help individuals pass drug tests. However, it is important to note that the effectiveness of these products and methods varies, and they may not always be reliable.

Q: What should I do if I have a drug test coming up?

A: If you have a drug test coming up, it is best to avoid using drugs altogether. If you are concerned about passing a drug test, it is advisable to seek professional advice, such as speaking with a healthcare professional or a drug testing expert.

Q: Will drinking lots of water help me pass a drug test?

A: Drinking lots of water before a drug test may dilute your urine, but it will not remove drugs from your system. Diluted urine may raise suspicion during a drug test, and some tests have measures in place to detect diluted samples. It is best to avoid relying solely on drinking lots of water as a strategy to pass a drug test.


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