Probiotic Cleanse: What It Is and How It Works

A probiotic cleanse is a dietary approach that uses probiotics with the aim of supporting gut health and removing toxins. For detoxification, it is not a proven cleanse: the liver and kidneys do most of that work, while the gut and lungs also help eliminate waste.

What is a probiotic cleanse?

A probiotic cleanse generally involves taking a probiotic supplement or eating foods with live microorganisms for a period of time. It may be marketed as a way to “reset” the gut, but there is no standard definition, product or schedule for a probiotic cleanse.

Probiotics are live microorganisms that provide a health benefit when consumed in adequate amounts. The benefit depends on the particular microorganism, including its strain, and the amount used. Not every live microorganism in food is necessarily a probiotic.

Some specific probiotics have been studied for particular digestive concerns, but a finding about one strain does not automatically apply to another. In particular, a probiotic cleanse has not been established as a way to remove toxins from the body.

The distinction matters because the word “cleanse” can imply that waste has built up and needs special treatment. For more on how the body handles unwanted substances, read what is detox.

How do probiotics fit into detoxification?

The liver processes many substances so they can be eliminated, and the kidneys filter the blood and remove waste in urine. The gut helps eliminate waste in stool, while the lungs remove carbon dioxide when you breathe out. These processes do not require a probiotic cleanse.

Gut microorganisms interact with food and other substances in the digestive tract. That interaction is an area of research, but it does not establish that taking probiotics makes the liver or kidneys remove waste faster, or that a probiotic product removes a particular harmful substance.

A change in bowel habits after starting probiotics is not proof that toxins have left the body. Similarly, a product label that promises a “reset” or “detox” does not identify a measurable benefit.

Eating regular meals, drinking enough water and getting appropriate medical care support normal body functions. A probiotic cleanse should not replace those habits or prescribed treatment.

What foods can provide probiotics?

Some fermented foods contain live microorganisms, although fermentation alone does not guarantee that a food contains a probiotic strain or provides a proven health benefit. Check the label for live cultures and, when available, the specific microorganisms used.

Yogurt with live cultures is one option. Some products identify their cultures on the package, while others may not provide strain details. Yogurt made from pasteurized milk can contain live cultures added during fermentation; the milk does not have to be unpasteurized.

Kefir is a fermented milk drink that may also contain live cultures. As with yogurt, products vary, so look for label information rather than assuming all kefir contains the same microorganisms.

Some refrigerated fermented vegetables, such as sauerkraut and kimchi, contain live microorganisms if they have not been heat-treated after fermentation. They are not automatically proven probiotic products, and their salt content can vary. Choose foods that fit your preferences and dietary needs rather than relying on a large amount of any one food.

How should you choose and use probiotic supplements?

There is no established probiotic dose, strain or duration for a cleanse. Supplement labels often state a quantity in colony-forming units, or CFU, but a higher number does not by itself mean a product is more effective. The strain and the health purpose for which it has been studied matter too.

If you are considering a supplement for a particular concern, ask a healthcare professional or pharmacist whether a product has evidence for that use. Look for the microorganism’s full name and strain on the label, along with storage instructions and an expiration date. Follow the labeled directions unless your healthcare professional advises otherwise.

There is no proven best time of day to take probiotics for a cleanse. Some products have specific instructions about taking them with food or storing them in a refrigerator. If you take antibiotics or other medicines, ask a pharmacist or healthcare professional about using probiotics alongside them; do not stop prescribed medication to start a cleanse.

Probiotics can cause gas or bloating, particularly when first introduced. A more intense regimen is not necessary: fasting, laxatives or replacing meals with supplements has not been shown to make a probiotic cleanse effective.

Who should be careful?

Talk with a healthcare professional before using probiotic supplements if you have a weakened immune system, are critically ill or have a central venous catheter. These situations can carry a greater risk of serious complications from live microorganisms. If you are pregnant or considering a supplement for a child, ask a healthcare professional for advice first.

Seek urgent medical attention for severe abdominal pain, blood in the stool, persistent vomiting or signs of dehydration. Contact a healthcare professional if digestive symptoms persist or if you develop a fever after starting probiotics.