Small intestinal bacterial overgrowth (SIBO) - Wokingham, Berkshire

Acupuncture and Chinese herbal medicine for small intestinal bacterial overgrowth (SIBO) at my clinic in Wokingham, Berkshire. Patients travel from across Berkshire and the Thames Valley — Reading, Henley, Maidenhead, Bracknell, Crowthorne and beyond — for evidence-based traditional Chinese medicine combining acupuncture, Chinese herbs, cupping and moxibustion. Over 25 years of clinical experience treating SIBO and SIBO-driven IBS with a personalised TCM approach that addresses the motility, digestive and constitutional patterns that allow the overgrowth to take hold in the first place.

On this page

1. Overview
2. Symptoms and subtypes
3. Causes and risk factors
4. Diagnosis — the breath test
5. Conventional treatment
6. SIBO in Chinese medicine
7. Acupuncture for SIBO
8. Chinese herbal medicine for SIBO
9. Moxibustion for SIBO
10. Self-care and diet
11. Treatment at my clinic
12. Frequently asked questions
13. References

1. What is SIBO?

Small intestinal bacterial overgrowth (SIBO) is a condition in which excessive bacteria proliferate in the small intestine, where the bacterial load should normally be low. The small intestine is the principal site of nutrient absorption; when colonic bacteria migrate upwards or when low-level small-bowel flora multiply unchecked, they ferment dietary carbohydrates as they arrive, producing hydrogen, methane or hydrogen sulphide gas. The clinical picture — bloating within an hour of eating, excessive wind, abdominal pain, altered bowel habit, food intolerances and malabsorption — is what we now call SIBO.

SIBO is increasingly recognised as the driver of many cases of “stubborn IBS”. Estimates suggest that up to two-thirds of patients with diarrhoea-predominant irritable bowel syndrome (IBS) have measurable SIBO on breath testing, and the condition is even more common in patients with hypothyroidism, scleroderma, diabetes, post-infectious IBS, chronic stress, long-term proton pump inhibitor (PPI) use and opioid medication. Conventional treatment relies on the antibiotic rifaximin (sometimes with a low-FODMAP or elemental diet), which clears the overgrowth in many patients but is followed by recurrence in a meaningful minority because the underlying motility or constitutional cause remains. Traditional Chinese medicine (TCM), combining acupuncture, Chinese herbal medicine and moxibustion, takes a holistic approach: clearing the active overgrowth with antimicrobial herbal formulae, supporting the migrating motor complex (the natural “housekeeping wave” of the small intestine) and rebuilding the Spleen-Stomach function that conventional medicine does not address. A landmark 2014 study at Johns Hopkins demonstrated that herbal antimicrobials are at least as effective as rifaximin for SIBO — a result that has fundamentally changed integrative gastroenterology and aligns closely with the way Chinese medicine has approached digestive overgrowth patterns for centuries.

2. SIBO symptoms and subtypes

SIBO is now classified into three subtypes according to the dominant gas produced, each with a slightly different symptom profile:

1. Hydrogen-dominant SIBO — typically associated with diarrhoea, loose stools and urgency. The most common SIBO subtype and the one rifaximin treats most reliably
2. Methane-dominant SIBO (intestinal methanogen overgrowth, IMO) — associated with constipation, hard stools, prolonged transit time and a sense of incomplete evacuation. Caused not by true bacteria but by methanogenic archaea (most commonly Methanobrevibacter smithii). Methane directly slows intestinal motility, producing the characteristic constipation pattern
3. Hydrogen sulphide SIBO — the most recently characterised subtype, associated with diarrhoea, a distinctive sulphurous wind odour and sometimes burning rectal symptoms

The cardinal symptoms of SIBO across all subtypes include:

1. Bloating that develops within 30–60 minutes of eating — often visible distension; this rapid post-prandial bloating is the most characteristic feature
2. Excessive wind, flatulence and belching
3. Altered bowel habit — diarrhoea with hydrogen-dominant SIBO; constipation with methane-dominant SIBO; mixed in some cases
4. Abdominal pain and cramping, frequently relieved by passing wind or stool
5. Adult-onset food intolerances — particularly to fermentable carbohydrates (FODMAPs) such as onions, garlic, wheat and legumes
6. Nutrient deficiencies and malabsorption — iron deficiency anaemia, low B12, deficiencies of fat-soluble vitamins (A, D, E, K) and protein malabsorption
7. Fatigue and brain fog — from both nutrient depletion and systemic effects of the overgrowth
8. Rosacea, restless legs and joint pain — less obvious but well-described SIBO associations
9. Unintended weight loss in severe cases; paradoxical weight gain in others
10. Mood disturbance, anxiety and sleep disturbance — the gut-brain axis dimension of chronic SIBO

If you have been told you have IBS but the standard low-FODMAP diet has only partially helped, or if your bloating develops reliably within an hour of eating and is severe, SIBO is worth formally investigating.

3. Causes and risk factors

SIBO has a single mechanism — failure of the defences that keep the small intestine bacterially clean — but many causes. The defences include gastric acid, bile, pancreatic enzymes, the migrating motor complex (MMC), the ileocecal valve and a layer of mucosal IgA. When one or more of these defences is compromised, bacteria flourish where they should not. Common causes include:

1. Impaired motility — the migrating motor complex is the small intestine’s “housekeeping wave”, sweeping bacteria downstream between meals. Its dysfunction is the most common single contributor to SIBO. Causes include post-infectious IBS (where a gastroenteritis episode produces autoantibodies against vinculin, a protein critical to the MMC), chronic stress, hypothyroidism, diabetic gastroparesis and Parkinson’s disease
2. Low stomach acid — including from long-term proton pump inhibitor (PPI) use, atrophic gastritis or H. pylori infection. PPIs are a particularly common contributor in clinical practice and tapering them, in coordination with the prescriber, often forms part of recovery
3. Opioid medications — strongly slow gut motility and predispose to SIBO
4. Anatomical issues — adhesions from previous abdominal or pelvic surgery, diverticula of the small bowel, strictures, prior gallbladder removal (cholecystectomy) and ileocecal valve dysfunction
5. Connective tissue disease — scleroderma in particular is strongly associated with SIBO through its effect on small-bowel motility
6. Bile insufficiency — bile has under-appreciated antimicrobial effects in the small intestine; reduced bile flow predisposes to overgrowth
7. Chronic stress and vagal nerve dysfunction — the gut-brain axis directly affects motility. In TCM, chronic emotional stress, frustration and suppressed anger affect the Liver, which invades the Spleen and disrupts the Middle Burner’s transforming and transporting function
8. Pancreatic exocrine insufficiency — reduces antimicrobial enzyme load reaching the small intestine
9. Recent or repeated antibiotic courses — disrupting the colonic ecology that normally keeps the small intestine in balance
10. Post-infectious onset — many SIBO cases develop following an episode of gastroenteritis, particularly bacterial infections such as Campylobacter, Salmonella or, more recently, SARS-CoV-2

This list matters because treating the overgrowth without addressing the underlying cause is the commonest reason patients relapse. Rifaximin or herbal antimicrobials may clear the active overgrowth; if a sluggish MMC, an ongoing PPI prescription, untreated hypothyroidism or chronic stress is left unaddressed, the bacteria return. Sustainable recovery requires both clearance and root-cause work.

4. Diagnosis — the breath test

SIBO is diagnosed non-invasively using a hydrogen and methane breath test:

1. The test — the patient drinks a measured dose of lactulose or glucose (a non-absorbable carbohydrate) and exhales into collection tubes every 15–20 minutes for three hours. The presence of hydrogen, methane and (increasingly) hydrogen sulphide is measured
2. Positive criteria — on the North American Consensus criteria (Rezaie et al. 2017), a rise of ≥20 ppm in hydrogen or ≥10 ppm in methane within the first 90 minutes is considered positive for SIBO
3. Glucose vs lactulose — glucose tests are more specific but only detect SIBO in the proximal small intestine; lactulose tests cover more of the small bowel with slightly higher false-positive rates. Both are reasonable; the right choice depends on context
4. Where to test in the UK — available through specialist gastroenterology clinics and through several private functional medicine laboratories (Genova Diagnostics, Biolab, Regenerus and others). Methane-inclusive testing (and ideally hydrogen sulphide testing where available) is preferred to a hydrogen-only test
5. The gold standard — small intestinal aspirate culture via endoscopy remains the technical gold standard but is invasive and rarely used outside research. A jejunal aspirate culture growing >10³–10⁵ CFU/mL is diagnostic
6. When testing is not essential — in clinical practice, where the diagnostic decision does not affect antibiotic use, a careful history with a treatment trial reassessed at 4–6 weeks is often pragmatic. Where conventional antibiotic treatment is being considered, a confirmed breath test result is worth obtaining first

5. Conventional treatment

Standard medical treatment of SIBO has three components — antimicrobials, dietary modification and prokinetic support to prevent relapse:

1. Rifaximin (Xifaxan) — a poorly absorbed antibiotic that targets the gut lumen with very little systemic exposure. The standard regime is 550 mg three times daily for 14 days. Best evidence is for hydrogen-dominant SIBO; methane responses are less reliable. Rifaximin is expensive in the UK and not always available on the NHS
2. Rifaximin plus neomycin — the standard combination for methane-positive SIBO. Neomycin 500 mg twice daily for 14 days, alongside rifaximin
3. Low-FODMAP diet — the most-studied dietary intervention. Reduces the substrate bacteria can ferment. Used for 4–8 weeks then progressively liberalised. Dietitian supervision is recommended
4. Elemental diet — a 14–21 day liquid diet of pre-digested nutrients (amino acids, monosaccharides, fats). Highly effective in research (around 80–85% response in some series) but psychologically demanding
5. Prokinetics — once the overgrowth is cleared, the migrating motor complex needs ongoing support. Options include low-dose erythromycin, prucalopride, low-dose naltrexone and ginger-based prokinetics. Used for several months after the antimicrobial course to reduce recurrence

6. SIBO in Chinese medicine

Traditional Chinese medicine recognised the clinical picture of post-prandial bloating, gas, intermittent diarrhoea and adult-onset food sensitivity long before the small intestinal microbiome was understood. The classical patterns that map onto SIBO are typically combinations of:

1. Spleen Qi deficiency with Dampness (Pi Xu Shi Sheng) — the foundational pattern in SIBO. The Spleen in TCM is responsible for transforming food and transporting nutrients; when deficient, food is incompletely transformed, generating Dampness in the Middle Burner. This corresponds to the bloating, fatigue after eating, loose stools and poor digestive function seen in chronic SIBO. Treatment tonifies Spleen Qi, resolves Dampness and warms the middle
2. Damp accumulation in the Middle Jiao — the heavy, distended, sluggish quality of the SIBO abdomen maps directly onto TCM Damp. Bloating that worsens with rich, sweet or heavy food is characteristically Damp. Often combined with Spleen Qi deficiency as the underlying cause
3. Liver Qi stagnation overacting on the Spleen (Gan Pi Bu He) — the stress-driven SIBO pattern. Many SIBO patients have a clear stress trigger; symptoms worsen during difficult periods and improve on holiday. Chronic emotional stress, frustration and suppressed anger cause Liver Qi to stagnate; when stagnation overflows, it disrupts the Spleen’s function. This pattern commonly accompanies hydrogen-dominant SIBO with diarrhoea and is identical to the dominant pattern in stress-triggered IBS
4. Damp-Heat in the intestines — the more inflammatory SIBO subtype, often presenting as hydrogen-dominant SIBO with urgent, burning loose stools, foul-smelling wind and a sensation of heat in the lower abdomen. Treatment clears Damp-Heat from the intestines, typically with bitter-cold herbs in the berberine family
5. Cold-Damp in the Middle Burner with Spleen and Kidney Yang deficiency — less common but distinct: cold extremities, worse with cold food, prolonged constipation, early morning loose stools (“cock-crow diarrhoea”) in some. This pattern maps remarkably well onto methane-dominant SIBO with its sluggish, cold-pattern constipation. Methane physically slows motility; in TCM terms, Cold and Spleen Yang deficiency produce exactly the same picture. Treatment warms and tonifies Spleen and Kidney Yang, and moxibustion is particularly effective
6. Food stagnation (Shi Ji) — the heavy, distended, foul-smelling-burp picture of acute SIBO flares after dietary indiscretion. Treatment moves food stagnation and supports digestion
7. Gu syndrome — the classical TCM concept of chronic, low-grade parasitic or microbial overgrowth disturbing digestion and mental state. See my Gu syndrome article for a fuller discussion. SIBO maps onto Gu syndrome more cleanly than almost any other modern condition, and the classical Gu-clearing approach — combining antimicrobial herbs with Spleen-tonifying and Shen-calming components — informs much of the modern integrative SIBO protocol

The TCM treatment principle — clear Damp-Heat or Damp-Cold where present, strengthen the Spleen, regulate the Liver-Spleen relationship, warm Yang where deficient, and clear Gu — aligns surprisingly well with the modern triple approach of antimicrobial, prokinetic and dietary modification.

7. Acupuncture for SIBO

Acupuncture addresses SIBO through several well-researched mechanisms that directly target the motility and gut-brain axis dysfunction underlying the condition:

1. Supporting the migrating motor complex (MMC) — the most clinically important effect in SIBO. The MMC’s failure is the single most common cause of SIBO recurrence; acupuncture points such as ST36 (Zusanli) have been consistently shown in both clinical and experimental studies to enhance gastric emptying and small-bowel motility, supporting the gut’s natural housekeeping function between meals
2. Regulating gut motility more broadly — ST25 (Tianshu) and ST36 have been shown to normalise the speed and coordination of intestinal contractions, reducing diarrhoea in hydrogen-dominant SIBO and improving transit in methane-dominant SIBO
3. Raising the visceral pain threshold — acupuncture reduces the lowered pain threshold that makes normal gas and intestinal activity feel painful, addressing one of the most distressing features of SIBO
4. Regulating the autonomic nervous system — acupuncture activates the parasympathetic “rest and digest” nervous system and reduces sympathetic overdrive, supporting both motility and stress regulation. This is particularly important in stress-triggered SIBO
5. Modulating serotonin pathways — approximately 95% of the body’s serotonin is produced in the gut and regulates intestinal motility and visceral sensation. Acupuncture modulates serotonin signalling, improving both bowel function and mood
6. Reducing intestinal inflammation — acupuncture inhibits the inflammatory signalling pathways that contribute to intestinal permeability and visceral hypersensitivity, which underpin both post-infectious SIBO and the “leaky gut” component of chronic SIBO
7. Reducing stress, anxiety and sleep disturbance — by altering brain chemistry, increasing endorphin production and reducing cortisol levels, acupuncture directly addresses the psychological component that maintains SIBO-prone gut-brain dysregulation

Key acupoints used in SIBO treatment include ST25 (Tianshu, front-mu of the Large Intestine), ST36 (Zusanli, the principal point for digestive function and the MMC), SP6 (Sanyinjiao), SP9 (Yinlingquan, for Dampness), CV12 (Zhongwan, front-mu of the Stomach), PC6 (Neiguan, for vagal tone and Stomach harmonisation), BL20 / BL21 (Pishu / Weishu, back-shu of Spleen and Stomach) and LR3 (Taichong, for the Liver-overacting-on-Spleen pattern). Point selection is adapted to the individual’s TCM pattern and SIBO subtype.

Research evidence

The strongest acupuncture evidence base is in IBS — the syndrome with which SIBO overlaps in 50–80% of cases. A 2025 systematic review and meta-analysis by Zhou et al., published in PLOS ONE, included 14 RCTs with 2,038 participants and found that acupuncture significantly improved quality of life compared to conventional treatment (MD = 6.62, 95% CI 2.30–10.94, P < 0.001), along with improvements in symptom severity and abdominal pain. A 2022 systematic review by Yang et al., in Frontiers in Public Health, found acupuncture outperformed pharmacological treatment for IBS symptom severity. Where SIBO drives IBS, the same gut-brain and motility mechanisms apply, and clinical experience consistently shows that acupuncture supports both clearance and relapse prevention.

8. Chinese herbal medicine for SIBO

Chinese herbal medicine has a particularly central role in SIBO. The single most important study in the herbal SIBO literature — Chedid et al. (2014) at Johns Hopkins — compared herbal antimicrobials (proprietary combinations including berberine, oil of oregano, neem, wormwood and garlic) against rifaximin in 104 patients with newly diagnosed SIBO. Herbal antimicrobials achieved a similar normalisation of breath test results (46% vs 34% for rifaximin), with comparable overall response rates. The trial was retrospective and single-centre, but it remains the strongest evidence to date for the herbal approach and has fundamentally changed integrative gastroenterology practice. Importantly, several of the herbs used in modern SIBO antimicrobial protocols map onto classical Chinese herbs: Huang Lian (Coptis chinensis) is a major plant source of berberine; Huang Bai (Phellodendron) and Huang Qin (Scutellaria) are similar bitter-cold antimicrobials; the classical Three Yellow Decoction (San Huang Tang) combining these three is a Damp-Heat clearing formula that overlaps closely with the modern herbal SIBO protocol.

Commonly used Chinese herbal formulae in SIBO management include:

1. Ping Wei San — the classical Damp-resolving formula for the Middle Jiao; foundation for damp-bloating presentations of SIBO
2. Liu Jun Zi Tang — the standard Spleen Qi tonic with Phlegm-resolving action; appropriate for fatigue-with-bloating and chronic deficiency presentations
3. Si Jun Zi Tang — the foundational Spleen Qi tonic, used as a base for many SIBO restoration formulae
4. Bao He Wan — for food-stagnation features (heavy, distended after meals, foul belching), particularly in acute SIBO flares after dietary indiscretion
5. Wen Dan Tang — for Phlegm-Damp with Heat features; useful in methane-dominant SIBO with mood and sleep symptoms
6. Si Miao San — for Damp-Heat in the lower abdomen, particularly with diarrhoea and a sensation of heat
7. Modified Three Yellow Decoction (San Huang Tang) — the Huang Lian, Huang Bai, Huang Qin combination, used as the Chinese herbal “antimicrobial” component during the active SIBO clearance phase
8. Tong Xie Yao Fang (Painful Diarrhoea Essential Formula) — for the Liver Qi invading Spleen pattern with stress-triggered urgent diarrhoea. Confirmed in a randomised controlled trial published in Alimentary Pharmacology & Therapeutics (2018) to be significantly more effective than placebo for diarrhoea-predominant IBS, which overlaps substantially with hydrogen-dominant SIBO
9. Xiao Yao San or Si Ni San — for Liver-Spleen disharmony presentations where stress is a clear driver
10. Jin Gui Shen Qi Wan or You Gui Wan — for Kidney Yang deficiency presentations with cold-pattern, methane-dominant SIBO and impaired motility

In a typical clinical course I prescribe an active antimicrobial-pattern formula for 4–6 weeks during the clearance phase, followed by a Spleen-tonifying and prokinetic-supportive formula for 8–12 weeks to consolidate and reduce relapse risk. All herbs prescribed at this clinic are pharmaceutical-grade granule extracts supplied by Sun Ten (Taiwan), ensuring consistent potency and safety. An online Chinese herbal medicine consultation is available for patients who prefer to receive herbal treatment remotely.

9. Moxibustion for SIBO

Moxibustion — the application of warming moxa over specific acupoints — is especially effective for SIBO subtypes dominated by Cold, Spleen Yang deficiency and impaired motility. The warming qualities of moxa tonify Spleen and Kidney Yang, dispel Cold from the intestines and directly support the migrating motor complex through autonomic and local reflex effects. Methane-dominant SIBO, with its cold-pattern constipation and sluggish transit, is the SIBO subtype that responds most reliably to moxibustion. Moxa is applied to points including ST25 (Tianshu), ST36 (Zusanli), CV4 (Guanyuan), CV8 (Shenque, the navel — a traditional moxa point for digestive Cold patterns) and SP9 (Yinlingquan) for Dampness. Heat therapy with an infrared TDP lamp over the lower abdomen provides additional warming support during the session and is well tolerated by patients who find direct moxa intense.

10. Self-care and diet for SIBO

Dietary and lifestyle changes are central to both SIBO clearance and relapse prevention. The dietary approach has two distinct phases — restriction during active treatment and gradual reintroduction afterwards — and both matter equally:

1. Low-FODMAP or SIBO-specific diet during the clearance phase — reducing fermentable substrates reduces the gas production that drives symptoms and supports a more rapid response. A 4–6 week elimination phase followed by systematic reintroduction is typical. Dietitian supervision improves outcomes
2. Gradual reintroduction afterwards — chronic dietary restriction damages the colonic microbiome (which depends on dietary fibre and resistant starch), narrows quality of life and creates anxiety around eating. Reintroducing foods one at a time, with attention to which items provoke symptoms and which do not, is the most underrated part of SIBO recovery
3. Avoid TCM damp-generating foods — in Chinese food therapy, dairy products (particularly cold milk and cheese), gluten-containing foods, raw cold foods (salads, vegetable juices, cold smoothies, ice cream), refined sugar and alcohol are categorised as damp-generating and Spleen-damaging. Reducing these foods often produces rapid symptomatic improvement, particularly in damp-pattern SIBO presentations
4. Eat warm, cooked foods at regular meal times — warm, cooked, easily digestible foods support Stomach and Spleen Qi. Soups, congee, well-cooked vegetables, lean meats, ginger, fennel and cardamom are foundational. Eating a moderate-sized warm breakfast every morning, respecting the natural Spleen and Stomach peak between 7am and 11am, matters more than people expect; skipping breakfast is one of the most consistent contributors to SIBO-prone patterns I see in clinical practice
5. Space meals to allow the MMC to run — the migrating motor complex only operates between meals. Constant grazing prevents it from running. Aim for 4–5 hours between meals, no constant snacking. This single change is often more powerful than any specific dietary restriction
6. Ginger and digestive bitters — fresh ginger tea warms the middle burner, supports motility and reduces nausea. Ginger root extract has good evidence as a natural prokinetic. Bitters before meals support digestion and bile flow
7. Manage stress and support vagal tone — daily breathing, yoga, tai chi, walking or any other vagal-toning practice. The gut-brain axis is bidirectional; calming the nervous system directly supports gut motility and reduces SIBO recurrence
8. Sleep — the MMC runs most powerfully at night. Adequate sleep is part of digestive health and SIBO relapse prevention
9. Probiotics — selectively — some probiotic strains help SIBO; others can worsen it by adding to the bacterial load. Spore-based probiotics (Bacillus species) and Saccharomyces boulardii (a yeast) are typically tolerated; broad lactobacillus and bifidobacterium mixes are sometimes not. Best decided case by case with practitioner guidance
10. Address underlying drivers — the single most important relapse-prevention step. If a PPI can be tapered (working with the prescriber), if hypothyroidism can be optimised, if anatomical issues can be managed, recurrence rates fall dramatically. Without this, antimicrobial clearance is only a temporary fix

11. SIBO treatment at my clinic

I treat SIBO at my clinic in Wokingham, Berkshire, combining acupuncture, Chinese herbal medicine and moxibustion in a programme matched to the individual’s SIBO subtype, TCM pattern, breath test profile and underlying drivers. A typical course runs in two phases: an active antimicrobial-and-clearance phase of 4–6 weeks with weekly acupuncture and daily Chinese herbs, followed by a Spleen-tonifying and motility-supporting maintenance phase of 8–12 weeks at lower acupuncture frequency. Most patients notice meaningful improvement in bloating, pain and bowel regularity within four to six sessions, with the breath test typically rechecked at the end of the clearance phase where it was used to diagnose.

For patients unable to attend in person, an online herbal consultation is available to begin herbal treatment remotely. See the prices page for treatment costs, the IBS page for the closely related IBS overview, and the digestive disorders page for an overview of other digestive conditions treated.

12. Frequently asked questions about SIBO

Is SIBO the same as IBS?

No, but they overlap heavily. SIBO is a specific microbial state diagnosable on breath testing; IBS is a clinical syndrome diagnosed on symptom criteria. A substantial proportion of IBS-D patients have SIBO on testing, and treating the SIBO often improves the IBS dramatically. Many patients carrying an IBS label for years have undiagnosed SIBO underneath.

How long does SIBO treatment take?

The active antimicrobial phase runs 2–6 weeks. The maintenance and motility-supporting phase runs another 3–6 months. Total: 4–8 months for a thorough course that includes relapse prevention. Patients with longstanding SIBO, scleroderma or repeated previous courses may need longer.

Are herbal antimicrobials really as effective as rifaximin?

The Chedid 2014 study at Johns Hopkins found roughly equivalent response rates. The study was small and retrospective; larger trials would be welcome, but the headline result has been clinically robust in subsequent practice and the herbal approach has become standard in integrative gastroenterology for SIBO patients who prefer to avoid antibiotics or have not responded to them.

Can I take Chinese herbs alongside rifaximin?

Generally yes — rifaximin has minimal systemic absorption and few significant herb interactions. A combined approach (rifaximin during the antibiotic course, with Chinese herbs for Spleen support and motility, then continuing Chinese herbs for the maintenance phase) often produces better outcomes than either alone. Coordinate with both your prescriber and your Chinese herbalist.

What about probiotics?

The probiotic question in SIBO is genuinely controversial. Some strains help; others can worsen symptoms by adding to the bacterial load in the small intestine. Spore-based probiotics (Bacillus species) and Saccharomyces boulardii (a yeast) are most often tolerated; broad lactobacillus and bifidobacterium mixes are sometimes not. This is decided case by case.

Will going gluten-free fix SIBO?

No. Gluten is not a fermentable substrate of the kind that drives SIBO symptoms. Coeliac disease should be excluded as a separate issue (your GP can arrange the antibody test), but a routine gluten-free diet is not a SIBO treatment.

How do I know if my SIBO has come back?

Recurrence of the original symptom pattern — bloating within an hour of eating, gas, altered bowel habit — is usually obvious. A repeat breath test confirms it. I recommend planning a 3-month and 6-month review after treatment ends, even if you feel well, particularly in patients with significant underlying motility, anatomical or PPI-related drivers.

Is the elemental diet really worth it?

The elemental diet is effective — among the highest single-intervention response rates in the SIBO literature — but it is psychologically demanding (14–21 days of liquid pre-digested nutrients only). For motivated patients with persistent SIBO that has failed multiple antibiotic and herbal courses, it is a valid third- or fourth-line option. For most patients, sequential herbal antimicrobials with TCM pattern-based support is gentler and equally effective over the medium term.

Is acupuncture safe for SIBO during pregnancy?

Yes. Acupuncture is safe during pregnancy when performed by a qualified practitioner. Certain acupuncture points are avoided during pregnancy and the treatment approach is adapted accordingly. Chinese herbal medicine during pregnancy requires careful assessment of each herb’s safety profile and is prescribed only after thorough review.

13. References

Chedid V, Dhalla S, Clarke JO, Roland BC, Dunbar KB, Koh J, Justino E, Tomakin E, Mullin GE. Herbal therapy is equivalent to rifaximin for the treatment of small intestinal bacterial overgrowth. Glob Adv Health Med. 2014 May;3(3):16–24.

Rezaie A, Buresi M, Lembo A, Lin H, McCallum R, Rao S, Schmulson M, Valdovinos M, Zakko S, Pimentel M. Hydrogen and methane-based breath testing in gastrointestinal disorders: the North American Consensus. Am J Gastroenterol. 2017 May;112(5):775–784.

Pimentel M, Saad RJ, Long MD, Rao SSC. ACG Clinical Guideline: Small Intestinal Bacterial Overgrowth. Am J Gastroenterol. 2020 Feb;115(2):165–178.

Bushyhead D, Quigley EMM. Small Intestinal Bacterial Overgrowth. Gastroenterol Clin North Am. 2021 Jun;50(2):463–474.

Chen M, et al. Randomised clinical trial: Tong-Xie-Yao-Fang granules versus placebo for patients with diarrhoea-predominant irritable bowel syndrome. Aliment Pharmacol Ther. 2018 Jun 1. doi: 10.1111/apt.14817.

Yang Y, Rao K, Zhan K, Shen M, Zheng H, Qin S, Wu H, Bian Z, Huang S. Clinical evidence of acupuncture and moxibustion for irritable bowel syndrome: a systematic review and meta-analysis of randomized controlled trials. Front Public Health. 2022 Nov 24;10:1022145. PMID: 36589968.

Zhou J, et al. The effect of acupuncture on quality of life in patients with irritable bowel syndrome: a systematic review and meta-analysis. PLoS One. 2025 Feb 13;20(2):e0314678. PMID: 39946356.

Prefer to be treated from home? Chinese herbal medicine online consultations are available throughout the UK and worldwide. After a full video consultation, Dr (TCM) Attilio D'Alberto formulates a bespoke herbal prescription and posts your Chinese herbs directly to your door.