SIBO treatments:
what helped, what did nothing, and what made it worse.

“The pattern over the next three years was frustratingly consistent: a treatment would knock symptoms down, I'd feel almost normal for a stretch, and then it would creep back — usually within three to five months. I logged every round, every supplement, and every relapse, which is the only reason I can lay it out cleanly now. What eventually changed things wasn't a stronger antibiotic. It was taking motility seriously between rounds — a prokinetic at night, deliberate meal spacing, and not grazing. The relapses got further apart, then mostly stopped. I'm not calling it cured, but it's the most stable it's been since before the food poisoning.”

After a year-long severe SIBO relapse, bloating, stubborn constipation, and pain after eating were still dominating daily life. Relief finally came with prucalopride (Motegrity), a prescription prokinetic used to restart the gut’s cleaning wave. The turning point in this report was the shift away from another antibiotic round and toward treating impaired motility.

IBS-D symptoms began in 2018 with diarrhea, bloating, gas, nausea, tenesmus, disrupted sleep, and low mood. Nutritionist-guided work eventually identified hydrogen-dominant SIBO. After three weeks on an elemental diet, the contributor reported a negative breath test and about 10 months of relief—an unusually durable stretch after years of symptoms.

After 30 years of daily stomach bloating and chronic constipation, the author improved their 100 ppm methane SIBO (IMO) over five months using herbal antimicrobials instead of further antibiotics, while managing Candida with diet, biofilm busters, and antifungal supplements.

Severe bloating and brain fog continued despite five negative SIBO breath tests. The finding that changed the direction of the story came later, when capsule endoscopy revealed a biofilm in the ileum that standard testing had missed. Biofilm disruptors used with simethicone were then linked with noticeable symptom relief.

Diagnosed with hydrogen SIBO in 2019 and hit by repeated relapses after course after course of rifaximin, this person eventually stepped back and identified a self-reinforcing cycle of stress, microbiome imbalance, and weakened stomach acid — and started treating that instead of just re-clearing the overgrowth.

Round after round of supplements and restrictive diets aimed at candida, SIBO, and MCAS brought major exhaustion without clear relief. The contributor reported that biofilm disruptors and a carnivore diet made no real difference. Some improvement appeared only after moving toward balanced eating and nervous-system regulation instead of another aggressive protocol.

Candida thrush symptoms resolved and stayed gone for over four months by combining biofilm disruptors, oregano oil, and a clean real-food diet that still included natural sugars. The approach eased severe upper-abdominal discomfort and avoided the extreme elimination diets this contributor had dreaded.

After years of ineffective herbal antimicrobials, two antibiotic rounds combined with PHGG powder progressively lowered methane levels from high to low, reducing bloating and histamine symptoms while improving energy.

Five years of methane-dominant SIBO brought severe constipation and bloating. The report spans an elemental diet, antibiotics, berberine, allicin, and other herbal protocols, all with limited impact, before L. reuteri / BioGaia was tried. It is a useful example of how a long treatment list can still produce very little overall movement.

For 18 years, painful IBS-D and severe diarrhea persisted. A positive hydrogen breath test led to antibiotics, but the contributor reported no relief. The improvement came from a different direction: eliminating manufactured citric acid calmed the diarrhea, and vitamin B1 was linked with a further clear improvement.