How to Pass a Urine Drug Test Using Baking Soda

What is baking soda?

Baking soda is sodium bicarbonate.  The formula is HCO3.  It is a white powder with a mildly salty taste.  It is used to leaven bread.  It can be used to inhibit fungal growth.  It can be used as a toothpaste, mouthwash, and rarely as a laxative.  Athletes may use it to prevent muscle soreness in a process called bicarbonate loading.

In what cases could a baking soda flush drink work?

A baking soda flush is basically an older way of trying to pass a drug test.  A baking soda flush will make your blood and urine more alkaline.  This may have fooled older tests, but may only work in very specific circumstances today.

Research on social media says this process has good efficacy for a methamphetamine test. Therefore, if you have used methamphetamine and using a detox method it is legal where you live, it may be useful to use baking soda as directed on the box as an antacid to assist your chances of passing a drug test.  Meth typically remains detectable in urine for 3 to 5 days after last use, so desist in using as soon as you know you will need to submit to a test.

For what drugs does baking soda detox your body?

To be clear, baking soda does not ‘detox’ your body.  It can make your body more alkaline.  This can help prevent muscle soreness.  Some runners and athletes use bicarbonate loading before a competition to improve endurance and delay muscle fatigue.  As an antacid, it can make your stomach feel better.

For methamphetamine masking, the theory goes like this.  Methamphetamine is alkaline in the blood.  If the kidneys have a competing alkaline substance to remove, it will temporarily be preoccupied with removing this substance, baking soda, to the exclusion of methamphetamine.  This will keep meth circulating in the blood and prevent it from reaching the urine.  Assuming you are taking a urine drug test, this may give you a window of 5 hours in which you will be able to pass a urine test.  It will not help you pass a saliva drug test, hair drug test, or blood drug test.

Drinking baking soda dangers

Can you overdose on from ingesting a baking soda remedy to pass a pee math test?

Yes, you can.  Do not take excessive amounts of baking soda.  The recommended dose for use as an antacid is ½ teaspoon in four to eight ounces of water every two hours.

A report published in 1994 in the American Journal of Emergency Medicine describes the possible side effects of acute or chronic baking soda overdose.  They include:

  • metabolic alkalosis, blood too alkaline
  • gastric rupture, tearing of the stomach wall
  • hypernatremia, too much sodium, electrolyte imbalance
  • hypertension, high blood pressure
  • hypochloremia, excessively low chloride
  • hypokalemia, lack of potassium in the blood
  • hyporeninemia, kidney dysfunction
  • intravascular volume depletion, low blood plasma
  • urinary alkalinization[1]

The Western Journal of Emerging Medicine in 2016  describes the case of a 33-year-old man admitted to the ER.  He had a history of substance abuse and of schizophrenia.[2]  In his pocket was an empty box of baking soda. Baking soda is not a drug of abuse in any way and produces no high.  He was discovered in the middle of the road, mumbling, disoriented and confused.

He appeared agitated, delirious, and would flail and slam his legs when strapped to a gurney, but most physical parameters were normal.

All of his toxicology tests proved negative. However, he had electrolyte imbalances suggestive of baking soda overdose.  CT scan revealed brain hemorrhage.  His electrolyte levels were monitored and corrected.  He was not recommended for surgical intervention. After 4 days, he had stabilized and was released.  This study demonstrates that overdose of baking soda can cause confusion, brain hemorrhage, and convulsions.  The other remarkable finding is that no drugs were detected even though this subject was a known polysubstance abuser. He may have happened to be clean at the time, or the massive baking soda ingestion may have been temporarily making it impossible for doctors to detect drug use, most likely methamphetamine use, if we supposed he might have taken the baking soda to beat a test for meth as many meth users are known to do.  We assume such from this example, but the dangers are clear.

If you consider how violent is the reaction between baking soda and vinegar, the same reaction can happen in the stomach between excessive baking soda and stomach acid. This can literally blow a hole in the stomach or bust a gut.  The Missouri Poison Control Center website describes a case of a man who attempted to use baking soda to pass a drug test. He took a massive 5 tablespoons of baking soda (this is three more tablespoons than the highest we’ve seen reported on social media for the beating of an amphetamine drug test).  The result was violent diarrhea and vomiting which along with stomach distension from large volumes of water and food, resulted in stomach rupture. The stomach was suctioned and the rupture repaired. The patient developed Acute Respiratory Distress and Sepsis.  On day 19, he appeared on his way to recovery.  This highlights how serious taking excessive amounts of baking soda can be. So, if you decide to use it, stick to the recommended doses. There is no evidence that excessive doses have to be taken for it to work.

There are rumors so-called baking soda bombs containing noxious chemicals are used to pass drug tests for methamphetamine. How sick a concoction makes you is no measure of how effective it is. You do not need to take anything that will make you ill in order to beat a drug test.  Effective methods can also be safe methods, so do your homework and do not abuse yourself.


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How to use a baking soda cleanse to pass a piss drug test:


Social Media claim:

Users on social media claim they have taken 2 tablespoons of baking soda with 16 ounces of water, two hours before a drug test for methamphetamine in order to pass the test.  This amount may not be safe.

Use and an antacid:

The safer way to use baking soda is to use it as an antacid as directed on the container.  You can use ½ teaspoon in 8 ounces of water every 2 hours.  Start this as soon as you wake up, around 6 hours before your test.  Use ½ teaspoon every 2 hours leading up to your test. Your kidneys will be occupied with removing baking soda and will spare your methamphetamine from being released into the urine.  This is believed will prevent you from testing positive for methamphetamine only.  It is not expected to work for marijuana, opioids, nicotine, kratom, PCP, or other drugs.  It may work for other amphetamines.

Does baking soda flush your system clean? Ask  social media

Reddit user

This Reddit user claims this method will give you a good chance of passing a urinalysis for methamphetamine.

Reddit user, negative review

This user has not used the method but claims it won’t work but points out correctly that amphetamines leave the system in about 3 days. Therefore, if you have a few days, just wait it out.  Don’t do anything desperate that you might regret like taking excessive doses of baking soda which may have a laxative effect or worse.

Reddit user, negative

This user feels it won’t work but gives no rationale.

Reddit user, positive

Reddit user, positive

This user gives a very glowing and convincing endorsement.

Conclusion: Does drinking baking soda and water help pass a UA drug test?

It will not help for most drug tests but there is strong anecdotal evidence that it may help you to pass a test for methamphetamine. Use only as instructed on your packaging as an antacid, this is enough to make the urine more alkaline which is all that is needed for baking soda to displace the methamphetamine at the kidney tubules.  This is rough, half of one teaspoon every two hours.  More than two tablespoons can cause serious and life-threatening stomach tearing, brain hemorrhage, and electrolyte imbalances. Good luck.


[1] “Acute toxicity from baking soda ingestion – PubMed.” Accessed 22 Jul. 2020.

[2] “Hemorrhagic Encephalopathy From Acute Baking Soda ….” 21 Jul. 2016, Accessed 22 Jul. 2020.