Oral thrush clears up in most cases within 10 to 14 days with antifungal treatment. The infection is caused by an overgrowth of Candida yeast in the mouth, producing white patches on the tongue, inner cheeks, and sometimes the roof of the mouth or gums. Getting rid of it involves a combination of antifungal medication, oral hygiene adjustments, and supportive home care.
Antifungal Medications
For mild to moderate thrush, the standard treatment is an antifungal gel or liquid applied directly inside the mouth for 7 to 14 days. The most commonly prescribed options are nystatin oral suspension, miconazole oral gel, and clotrimazole lozenges. With nystatin, the typical approach for adults is swishing the liquid around your mouth, holding it there as long as possible before swallowing, and repeating four times a day. You’ll continue the medication for at least 48 hours after the white patches disappear to make sure the yeast is fully cleared.
Severe infections, or cases that don’t respond to topical treatment, are treated with a stronger antifungal taken in pill form. Fluconazole is the most common choice for these situations. Your provider may also opt for pill-form treatment if you have a weakened immune system or the infection has spread beyond your mouth into your esophagus, which can cause difficulty swallowing or a sensation of food getting stuck in your throat.
Salt Water and Baking Soda Rinses
Two simple rinses can ease discomfort and support healing alongside antifungal treatment. For a salt water rinse, dissolve half a teaspoon of salt in one cup of warm water, swish it around your mouth for one to two minutes, then spit it out. Salt water helps reduce inflammation and creates a less hospitable environment for yeast. A baking soda rinse works similarly: half a teaspoon of baking soda in a cup of warm water, swished and spit out. Baking soda raises the pH in your mouth, which can help slow Candida growth. Neither rinse replaces antifungal medication, but both can provide relief from soreness while you’re healing.
Probiotics and Candida
Certain probiotic strains actively suppress Candida growth by producing acids and other compounds that disrupt the yeast’s ability to thrive and form biofilms in the mouth. The strains with the strongest clinical evidence include Lactobacillus rhamnosus, L. acidophilus, L. reuteri, and Streptococcus salivarius K12. These have been tested in lozenges, capsules, and even probiotic-enriched cheese, and they consistently reduce Candida counts.
In one study, denture wearers who applied a probiotic capsule containing L. rhamnosus, L. acidophilus, and Bifidobacterium daily for five weeks had a Candida detection rate of just 16.7%, compared to 92% in the group that didn’t use probiotics. Other trials found that probiotic lozenges shortened treatment time when used alongside standard antifungals. Probiotics work best as a complement to medication, not a replacement, but they’re worth considering if you’re prone to recurring infections.
Reducing Sugar in Your Diet
Candida feeds on sugar, and the link between high sugar intake and yeast overgrowth is well established. People with diabetes are significantly more susceptible to oral fungal infections because elevated blood sugar creates ideal conditions for Candida to multiply. While you’re treating thrush, cutting back on sugary foods and drinks can help starve the yeast and support faster recovery. This includes obvious sources like candy and soda, but also refined carbohydrates that break down quickly into sugar.
There’s no need to follow a rigid “anti-candida diet,” but reducing your sugar load during an active infection is a practical step that costs nothing and may speed things along.
Oral Hygiene During Treatment
Your daily oral care routine matters more than usual when you’re fighting thrush. Replace your toothbrush at the start of treatment and again once the infection clears. Candida can linger on bristles and reintroduce the yeast right back into your mouth. If you wear dentures, clean them thoroughly every day, since dentures are one of the most common surfaces where Candida colonizes and persists.
Brush gently twice a day, but avoid mouthwashes that contain alcohol, which can irritate already-inflamed tissue and disrupt the balance of organisms in your mouth. Stick with the salt water or baking soda rinses described above instead.
How Long Recovery Takes
Most people start noticing improvement within a few days of beginning antifungal treatment, with the white patches gradually shrinking. Full clearance typically takes 10 to 14 days. If your symptoms haven’t improved after a week of treatment, or if the patches spread or you develop pain when swallowing, check back with your provider. Persistent or spreading thrush can signal an underlying issue like an immune deficiency or undiagnosed diabetes that needs investigation.
Thrush is uncommon in healthy older children, teenagers, and adults. If you develop it without an obvious trigger (like recent antibiotic use, inhaled corticosteroids, or denture wear), it’s worth exploring why your immune defenses let the yeast overgrow in the first place.
Preventing Recurrence
Some people get thrush repeatedly, especially if the underlying cause isn’t addressed. If you use a steroid inhaler for asthma, rinsing your mouth with water after each use is one of the most effective ways to prevent yeast overgrowth. The steroid residue left in your mouth suppresses local immune defenses and feeds Candida directly.
Keeping blood sugar well controlled, maintaining good oral hygiene, and incorporating probiotic-rich foods like yogurt into your regular diet all help maintain a healthy microbial balance in the mouth. If you’ve been on a long course of antibiotics, which kill the bacteria that normally keep Candida in check, you can discuss preventive antifungal use with your provider for future rounds.