What Is A Parasite Cleanse? Plus, How To Know You Have One

If you're on the wellness side of TikTok, you've probably already heard about parasite cleanse products. You know, those tiny brown tincture bottles that wellness influencers claim cleared their intestines of parasites overnight?

If not, that's about all you need to know: A lot of people online are talking about parasites, and plenty of faulty products are out there. 

A parasite cleanse is any product, diet, or supplement that claims to rid the body of parasites, thus helping to alleviate gut or full-body symptoms. Parasite cleanse products come in many forms, from tinctures to capsules and beyond. 

"The duration of symptoms will be a bigger clue, bacterial and viral infections typically resolve in days to weeks whereas parasites can last much longer, courses are milder, more indolent, and may linger for weeks to months," Mazur says about parasite infections. 

You may also notice a new lactose intolerance, he says, which is a common symptom of giardia, or one of the more common parasites in the United States. 

Still, these symptoms could lead to other diagnoses, such as bacterial diarrheal illnesses, SIBO, gluten intolerance, or dysbiosis, all of which Mazur says are more common in the United States than parasite infections. 

"After [these] causes have been ruled out and the patient is still symptomatic, it may be time to consider a parasitic illness," he says. 

Unfortunately, the answer to this question isn't as cut-and-dried as you might hope. Every parasite cleanse product is different, some with more helpful ingredients than others, but there's not exactly enough research to promise any surefire success. 

"Many if not all of the OTC supplements are lacking randomized control trials (the gold standard) with findings that support their use and efficacy," Feller says—which is why experts tend to recommend other avenues for parasite diagnosis and treatment. 

However, as Mazur explains, some research supports the use of certain ingredients for general gut support. For example, "Black walnuts contain a number of phytochemicals that are likely anti-inflammatory1 and possibly antimicrobial,2 so while they may provide general GI support, they are not specific for parasites," he explains. 

For specific anti-parasite benefits, oregano and thyme3 have been the most studied, he said. "These herbs were found to inhibit various stages of the life cycle of certain parasites at certain stages by inhibiting growth or being directly toxic to parasitic eggs (ovicidal) or larvae." 

Apart from supplements and tinctures, some people may consider a specific diet effective for killing parasites—some opt for a grain-free diet, others cut out fruit entirely, and some eliminate sugar of any kind—but the experts aren't so sure this is effective. 

"Changing one's pattern of eating can support the integrity and health of the gut," Feller says, but, she adds, "I would not recommend a diet shift as the primary and only mode of treatment for parasitic infections."

Feller lists foods like garlic that have antimicrobial properties4, but simply consuming garlic here and there isn't enough to kill a parasite. "Parasite treatment requires a specific dose to elicit the desired response," she says.

If you have symptoms that lead you to believe you have a parasite (or another gut health concern, for that matter), you should visit your health care physician for a consultation. 

"This work-up would likely include a stool test to diagnose, treat, and support the actual conditions the patient is suffering from. Once an actual diagnosis is established, there are various natural and pharmaceutic options that can be considered," Mazur says. 

With the influx of parasite cleanse products, TikTok videos, and online searches, it raises the question: Why do we all think we have parasites? The answer, experts say, is a combination of a few factors. 

To start, "More people than ever are having GI issues, and as people become more aware of the limitations of traditional workups and the downsides of antibiotics, anti-acid drugs, and other traditional GI medications, they are seeking more natural options," Mazur says.

On top of that, "Many of us are looking for ways to optimize our health, and TikTok fuels the idea that we are not doing enough," Feller adds.

So while parasitic infections can and do happen all the time, you'll want to make sure you have a parasite before reaching for treatments—over-the-counter and otherwise. 

Parasite cleanse products and diets have been spiking in popularity but aren't as research-backed as you might hope. While some of the herbal ingredients found in these tinctures and supplements may have early studies on gut health support and anti-parasite properties, rigorous human clinical trials need to be performed to confirm their efficacy and application.