SIFO Treatment
When bacteria aren't the whole story. Fungal overgrowth in the small intestine needs a different playbook.
You Treated SIBO. You Still Feel Terrible. Here's Why.
A woman from Jacksonville Beach had been through two rounds of SIBO treatment. Rifaximin, herbal antimicrobials, the whole thing. Her breath test came back negative -- SIBO was gone. But she still had bloating, brain fog, and sugar cravings that wouldn't quit. Her practitioner was stumped.
SIFO -- Small Intestinal Fungal Overgrowth -- is the condition that hides behind SIBO. Research published in Digestive Diseases and Sciences found fungal overgrowth in a significant percentage of patients with unexplained GI symptoms. It doesn't show up on breath tests. Standard stool panels often miss it. But organic acid testing and targeted stool cultures can find it.
The kicker? Treating SIBO with antibiotics can make SIFO worse. Kill the bacteria, remove the competition, and fungi fill the void. If you've treated SIBO and still feel terrible -- SIFO needs to be on the radar.
Looks Like SIBO. Acts Different.
SIFO overlaps with SIBO but has distinct patterns -- especially the sugar cravings, upper GI focus, and the frustrating non-response to bacterial treatments.
Bloating That Won't Budge
Persistent abdominal bloating -- especially after carbs, sugar, or fermented foods. SIFO shares a lot of overlap with SIBO, but the bloating tends to be more constant and less tied to specific meals.
Nausea and Upper GI Discomfort
A queasy, unsettled feeling in your stomach. Fullness after small meals. Upper abdominal discomfort that doesn't quite fit the 'IBS' pattern. That upper-GI focus is more common with fungal overgrowth.
Sugar and Carb Cravings
Intense, almost uncontrollable cravings for sugar, bread, pasta. That's not weakness. Candida and other fungi feed on sugar -- and when they're overgrown, they drive cravings to keep the food supply coming.
Brain Fog and Fatigue
Mental cloudiness, difficulty concentrating, exhaustion that sleep doesn't fix. Fungal metabolites -- especially acetaldehyde from candida -- are neurotoxic. They cross into your bloodstream and affect your brain directly.
Recurrent Yeast Infections or Thrush
Vaginal yeast infections that keep coming back. Oral thrush. Fungal skin rashes. If you're fighting yeast in multiple places, the overgrowth likely starts in the gut.
SIBO Treatment That Didn't Work
You treated SIBO -- antibiotics or herbals -- but symptoms didn't resolve. That's a strong signal for concurrent SIFO. Bacterial protocols don't address fungal overgrowth, and killing bacteria can actually make yeast worse by removing competition.
What Lets Fungi Take Over
Fungi are always present in your gut -- in small, controlled amounts. The problem starts when the checks and balances fail and fungal populations explode.
- Antibiotic use wiping out bacteria that keep fungal populations in check
- Proton pump inhibitor (PPI) use reducing stomach acid (fungi thrive in low-acid environments)
- High-sugar, high-carb diets feeding fungal growth
- Immune suppression from chronic stress, steroids, or autoimmune conditions
- Diabetes or insulin resistance creating a sugar-rich environment in the gut
- Prior SIBO treatment without addressing concurrent fungal overgrowth
How We Treat SIFO in Jacksonville
Different organism, different strategy. We test specifically for fungal overgrowth, treat with antifungal protocols, break biofilms, and rebuild the microbiome to prevent recurrence.
Comprehensive GI Testing
Standard SIBO breath tests don't detect fungal overgrowth. We use organic acid testing (OAT) and comprehensive stool analysis to identify fungal markers -- arabinose, D-arabinitol, and direct fungal cultures. If your previous testing only looked at bacteria, the fungal piece was missed.
Antifungal Protocol
Targeted antifungal agents -- herbal (berberine, caprylic acid, oregano oil) or pharmaceutical (fluconazole, nystatin) when warranted. The approach depends on the severity and species identified. We go after the overgrowth directly while supporting your body's own defenses.
Biofilm Disruption
Fungi form biofilms -- protective shields that make them resistant to treatment. We use biofilm-disrupting agents alongside antifungals to break through these defenses. Without this step, the overgrowth often persists despite treatment. It's the detail that separates effective protocols from failed ones.
Microbiome Rebuilding
After clearing the overgrowth, we restore healthy bacterial populations that naturally keep fungi in check. Specific probiotic strains (especially Saccharomyces boulardii and targeted Lactobacillus species), prebiotic fiber, and dietary adjustments. A healthy microbiome is your best long-term defense against recurrence.
How Long Does Treatment Take?
Antifungal protocols typically run 6 to 8 weeks. Biofilm disruption adds complexity and may require pulse dosing over 2 to 3 months. Microbiome rebuilding continues for 3 to 6 months post-clearance. We retest with organic acid and stool markers to confirm the overgrowth is resolved.
Related Conditions
Treated SIBO But Still Suffering?
It might be fungal. We test for what others miss -- and treat what they can't.