Coconut oil is one of the best options for oil pulling, thanks to its high concentration of a fatty acid that actively kills oral bacteria. Clinical studies show it can reduce plaque and gum inflammation by roughly 50% over four weeks, performing on par with chlorhexidine, the gold-standard antimicrobial mouthwash used in dentistry. That said, it works as a supplement to brushing and flossing, not a replacement.
Why Coconut Oil Specifically Works Well
About half the fat in coconut oil is lauric acid, a medium-chain fatty acid that disrupts bacterial cell walls and membranes. When lauric acid comes into contact with harmful microbes in your mouth, its chemical structure essentially punches holes in their protective outer layers. This gives coconut oil a broad antimicrobial reach: it’s active against bacteria linked to cavities and gum disease, as well as several Candida yeast species that cause oral thrush.
Traditional oil pulling uses sesame oil, which has its own benefits from antioxidant compounds and polyunsaturated fats. But coconut oil has a clear edge in two areas. First, its antifungal properties are stronger, making it more effective at controlling yeast overgrowth in the mouth. Second, most people find the taste and texture of coconut oil far more tolerable, and it doesn’t alter taste perception the way some other oils can.
What the Clinical Evidence Shows
A preliminary clinical trial published in the Nigerian Medical Journal tracked participants who oil-pulled with coconut oil daily for 30 days. Their average plaque scores dropped from 1.19 to 0.39, and gingival (gum inflammation) scores fell from 0.91 to 0.40. That roughly 50% reduction in both measures matched what chlorhexidine mouthwash typically achieves over the same period.
A systematic review in the journal Heliyon confirmed the pattern. When researchers pooled data from multiple studies, they found no statistically significant difference between coconut oil pulling and chlorhexidine for plaque scores, gum inflammation scores, or bleeding on probing. The one area where coconut oil came out ahead was tooth staining: chlorhexidine is notorious for discoloring teeth over time, while coconut oil caused significantly less staining.
Separate research on Streptococcus mutans, the primary bacterium responsible for tooth decay, found that coconut oil pulling produced a statistically significant drop in bacterial colony counts in saliva, again comparable to chlorhexidine. So while the evidence base is still relatively small, the studies that exist consistently point in the same direction.
How to Do It Correctly
The standard technique is straightforward: put about one tablespoon of coconut oil in your mouth first thing in the morning, before eating or brushing, and swish it gently around for 15 to 20 minutes. You’re not gargling. The motion should feel like a slow, relaxed rinse that pushes the oil between your teeth and along your gumline. If your jaw gets tired or 20 minutes feels like too much, starting with 5 to 10 minutes is fine while you build up.
Two things matter for safety. First, do not swallow the oil. After 20 minutes of collecting bacteria, the oil is something you want out of your body, not in it. Second, spit the oil into a trash can rather than the sink. Coconut oil solidifies at cooler temperatures, and over time it will coat and clog your pipes the same way cooking grease does. Let it land in a tissue or small container and toss it in the garbage.
One Real Risk to Know About
The most serious documented risk of oil pulling is lipid pneumonia, a rare lung condition caused by accidentally inhaling oil into the airways. Two case reports describe patients who developed breathing problems and chronic cough after months of oil pulling because they repeatedly aspirated small amounts of oil during the process. One was a 66-year-old man who had been doing nasal oil washing (a variation on the practice), and the other was a 38-year-old woman who sometimes inhaled oil while swishing.
The takeaway is simple: keep the oil in the front of your mouth and use a gentle swishing motion. If you feel the urge to cough or gag, spit the oil out immediately. People with swallowing difficulties or chronic respiratory conditions should be especially cautious.
What Dental Professionals Say
The American Dental Association does not currently recommend oil pulling as a dental hygiene practice, citing a lack of large-scale, high-quality clinical trials. That position doesn’t mean the practice is harmful or useless. It reflects the reality that the existing studies, while promising, are mostly small and short-term. Dental organizations generally want to see bigger trials with longer follow-up periods before endorsing a practice.
In practical terms, this means oil pulling with coconut oil is best treated as an add-on to your regular routine, not a substitute for brushing twice a day and flossing. The mechanical action of a toothbrush removes plaque in ways that swishing oil cannot fully replicate, especially along the gumline and on the surfaces of back teeth. But if you’re looking for a natural antimicrobial rinse that doesn’t stain your teeth or contain alcohol, coconut oil pulling has a reasonable evidence base behind it.