> ## Content Index > Fetch the complete content index at: https://www.gutminds.com/llms.txt > Use this file to discover other available public pages before exploring further. # Candida and SIFO Probiotics: Best Strains for Yeast Infections - URL: https://www.gutminds.com/candida-and-sifo-probiotics-best-strains-for-yeast-infections/ - Published: 2026-10-01T11:27:53.000Z - Updated: 2026-10-01T11:27:53.000Z - Description: Health forums are full of people struggling with fungal infections. When yeast overgrows in the gut, the problem may go far beyond digestion. It can affect your skin and mental health too. What are the best probiotics for Candida and SIFO? - Author: GutMinds [Science Based](#the-bottom-line) SIFO and other Candida infections are a nightmare to deal with. They are notoriously hard to treat. I’ve read hundreds of articles, testimonials and papers on fungal infections, and the approach that makes the most sense to me is: crowd out rather than kill. ## Best Candida and SIFO probiotics Two probiotic strains that consistently come up in discussions about Candida and SIFO are *Saccharomyces* *boulardii* and *Lactobacillus* *rhamnosus*. Here’s what Dr. William Davis says about them in his book *Super Gut*: ### *Saccharomyces* *boulardii* *The fungal species S*. *boulardii*, *a strain of Saccharomyces cerevisiae used in winemaking*, *bread making*, *and beer brewing*, *can be taken as a probiotic supplement to suppress intestinal Candida through competition*. *A dose of five billion CFUs per day can work*. *S*. *boulardii does not colonize the gastrointestinal tract and is gone within days of stopping supplementation*. Not great news it doesn’t stay in the gut but at least it’s not a harsh antimicrobial. ### *Lactobacillus* *rhamnosus* Another probiotic Dr. William Davis mentions is *Lactobacillus* *rhamnosus*, specifically the GG strain: *Although the precise composition of the ideal probiotic to suppress Candida has not been established*, *several different preparations have been shown to reduce Candida*, *an effect that requires up to one year to develop*. *Strains of Lactobacillus rhamnosus (GG strain) may be especially effective*. You need to take this one for at least a year, which is probably why so many people fail to treat yeast overgrowth in the gut - they’re just not consistent enough. ### Spore-Based Probiotic for Yeast Overgrowth in the Gut Another probiotic that I have seen frequently mentioned in articles about fungal overgrowth in the gut is *Bacillus* *subtilis*. Studies mention different strains but not all of them are available commercially as supplements. [Bacillus subtilis for SIBO and Gut Health \[Best Strains\]](https://www.gutminds.com/bacillus-subtilis-sibo-and-gut-health/) You can also find foods that contain *Bacillus* *subtilis*, such as some brands of kombucha and Japanese natto (if you can handle the taste and texture). [Top 5 Fermented Foods for Gut Health \[From Asia\]](https://www.gutminds.com/top-5-fermented-foods-for-gut-health-from-asia/) In [this paper](https://www.mdpi.com/2036-7481/13/4/70?ref=gutminds.com), I found evidence that the metabolites produced by *B*. *subtilis* may be what matters when it comes to controlling Candida overgrowth: *Bacillus spp*. *has been successfully applied to the control of pathogenic fungi*, *including in the field of medicine and biological control*. *Its metabolites play an important role in the prevention and treatment of fungi*, *including a variety of metabolites in different mechanisms to kill C*. *albicans or inhibit its growth*. Researches in another [study](https://link.springer.com/article/10.1186/s13213-024-01764-9?ref=gutminds.com) came to a similar conclusion: substances produced and released by *B*. *subtilis* can inhibit the growth of and damage *C*. *albicans*: *In present study*, *three bacteria were screened against Candida albicans to evaluate their antifungal properties*, *one of bacterial isolates exhibited strong antifungal activity that was identified as Bacillus subtilis based on the 16Sr RNA gene sequence*. *Overall*, *the strain B. subtilis NAM shows potential as a bacterium that can effectively restrict the growth of drug-resistant pathogenic yeasts*. ## Best Probiotics for Fungal Infections As you can see we have 3 different probiotic types here: *Saccharomyces* *boulardii* is a probiotic yeast. *Bacillus* *subtilis* is a spore-forming bacterium. And *Lactobacillus* *rhamnosus* is a lactic acid bacterium. What if you combined them for better results since *Candida* and SIFO are so difficult to treat? This is the approach recommended by Dr. Michael Ruscio. He calls it the Evidence-Based Meta-Protocol and uses it for Candida, SIBO and IBS. For about 2 to 3 months, you take probiotics from the following groups. As you can see, the doses are fairly high. - Lacto/Bifido Blend: 1-50 billion CFU - *Saccharomyces* *boulardii*: 10-15 billion CFU - Soil-based probiotics: 2-6 billion CFU #### The Bottom Line Whatever approach you take, it's important to remember that Candida and SIFO treatments take time. Candida is highly adaptive and has even developed resistance to antifungal medications in many cases. Taking the right probiotics at the right doses (which is very important!) is a natural approach that may take anywhere from a few months to a year before you notice relief from your symptoms. **READ MORE** [SIFO and Candida Overgrowth Natural Treatment by Dr. William Davis](https://www.gutminds.com/sifo-and-candida-overgrowth-natural-treatment-dr-william-davis/) #### 4 Sources Dr. William Davis **Super Gut*: **A Four-Week Plan to Reprogram Your Microbiome*, **Restore Health*, **and Lose Weight*. Yellow Kite, 2022\. Kindle Edition [**Bacillus* Metabolites: Compounds, Identification and Anti-**Candida albicans* Mechanisms](https://www.mdpi.com/2036-7481/13/4/70?ref=gutminds.com) [Anticandidal activity of a wild **Bacillus* **subtilis* NAM against clinical isolates of pathogenic **Candida* **albicans*](https://link.springer.com/article/10.1186/s13213-024-01764-9?ref=gutminds.com) [This Supplement Transforms IBS, SIBO & Candida in 60 Days](https://www.youtube.com/watch?v=GUsQnklKljk&ref=gutminds.com)