Psyllium Husk ： Irritable Bowel Syndrome (IBS)
B エビデンス 少なくとも1件のランダム化試験がこれを支持しており、おおむね一貫した結果が得られています。ACG recommends soluble fiber (psyllium) over insoluble fiber for IBS. Improves global IBS symptoms with particular benefit in IBS-C. NNT of 7 for global symptom improvement.
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B
結論
ACG recommends soluble fiber (psyllium) over insoluble fiber for IBS. Improves global IBS symptoms with particular benefit in IBS-C. NNT of 7 for global symptom improvement.
Key Study Findings
Observational Study
n=97
Survey of Latin American gastroenterologists, specialists in disorders of gut-brain interaction, on the diagnosis and …
Dose: None
vs: None
Outcome: IBS management heterogeneity in Latin America
効果: None
None
対象集団: Latin American gastroenterologists (DGBI specialists)
Review
The role of dietary fiber in the gastrointestinal tract: when, how and why?
Dose: None
vs: None
Outcome: None
効果: None
None
対象集団: Review of dietary fiber role in GI tract
Review
The role and therapeutic effectiveness of Plantago ovata seed husk (psyllium husk) in the prevention …
Dose: None
vs: None
Outcome: Colitis severity
効果: None
None
対象集団: Ulcerative colitis patients
Randomized Controlled Trial
n=314
Sex-Dependent Efficacy of Dietary Fiber in Pediatric Functional Abdominal Pain.
Dose: Dietary fiber (psyllium)
vs: Low fiber diet
Outcome: Abdominal pain frequency
効果: None
None
対象集団: Children with functional abdominal pain disorders
Randomized Controlled Trial
3 weeks
Double-blind
Nutraceuticals and Pain Disorders of the Gut-Brain Interaction in Infants and Children: A Narrative Review …
Dose: None
vs: Placebo
Outcome: Pain outcomes
効果: None
None
対象集団: IBS patients
Systematic Review
[Phytotherapeutic recommendations in medical guidelines for the treatment of gastroenterological diseases - a systematic review].
Dose: Peppermint oil, STW-5, psyllium, others
vs: Standard care or placebo
Outcome: Symptom improvement in GI diseases
効果: None
None
対象集団: Patients with gastroenterological diseases
Key Statistics
8
研究数
900
参加者数
↑
Positive
B
グレード
Referenced Papers
Best practice & …
2025
1 件の引用
The Medical letter …
2025
The Medical letter …
2025
Revista de gastroenterologia …
2025
The Medical letter …
2025
Gastroenterology
2024
8 件の引用
Nutrients
2024
5 件の引用
Przeglad gastroenterologiczny
2024
4 件の引用
[Phytotherapeutic recommendations in medical guidelines for the treatment of gastroenterological diseases - a systematic review].
Systematic Review
Zeitschrift fur Gastroenterologie
2024
3 件の引用
Gastroenterology
2024
3 件の引用
Dietary Fibers in Healthy Children and in Pediatric Gastrointestinal Disorders: A Practical Guide.
Review
Nutrients
2023
43 件の引用
The American journal …
2023
39 件の引用
Nutrients
2023
32 件の引用
Journal of pediatric …
2023
21 件の引用
Nutrients
2023
4 件の引用
Journal of pediatric …
2023
1 件の引用
In persons with constipation or IBS-C, kiwifruit vs. psyllium increased spontaneous bowel movements.
Other
Annals of internal …
2023
Gut
2022
39 件の引用
American journal of …
2022
18 件の引用
Expert review of …
2022
8 件の引用
The Turkish journal …
2021
14 件の引用
Current opinion in …
2021
6 件の引用
The lancet. Gastroenterology …
2020
119 件の引用
The Medical letter …
2020
Journal of the …
2019
171 件の引用
World journal of …
2019
14 件の引用
International journal of …
2017
146 件の引用
Probiotics, fibre and herbal medicinal products for functional and inflammatory bowel disorders.
Review
British journal of …
2017
145 件の引用
Clinical gastroenterology and …
2017
93 件の引用
Journal of gastroenterology …
2017
32 件の引用
Current opinion in …
2017
24 件の引用
International journal of …
2016
69 件の引用
Clinical gastroenterology and …
2016
2 件の引用
Digestion
2014
61 件の引用
The American journal …
2013
421 件の引用
Journal of clinical …
2011
30 件の引用
Alimentary pharmacology & …
2011
3 件の引用
Canadian journal of …
2011
Current opinion in …
2010
22 件の引用
BMJ (Clinical research …
2009
296 件の引用
Australian family physician
2009
12 件の引用
Prescrire international
2009
BMJ (Clinical research …
2008
550 件の引用
International journal of …
2007
375 件の引用
Digestive diseases and …
2006
70 件の引用
Current treatment options …
2006
24 件の引用
Systematic review: the role of different types of fibre in the treatment of irritable bowel syndrome.
Systematic Review
Alimentary pharmacology & …
2004
322 件の引用
Gut
1987
153 件の引用
Biomedicine & pharmacotherapy …
1986
4 件の引用
Annals of internal …
1981
91 件の引用
Annals of internal …
1981
6 件の引用
IRRITABLE COLON.
Other
JAMA
1964
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
一般的な使用量
- general:
- 5-10 g/day (with adequate water)
- ibssupport:
- 5-10 g/day (start low, titrate up over 1-2 weeks)
- constipation:
- 10-20 g/day in divided doses with at least 240 mL water per dose
上限量： Well-tolerated up to 30 g/day with adequate fluid intake
研究で検討された用量
| 用量 | 期間 | 効果 | N |
|---|---|---|---|
| None | -- | Mixed | 97 |
| None | -- | Mixed | -- |
| None | -- | Positive | -- |
| Dietary fiber (psyllium) | -- | Positive | 314 |
| None | 3 weeks | Positive | -- |
| Peppermint oil, STW-5, psyllium, others | -- | Positive | -- |
| None | -- | Mixed | -- |
| Low-FODMAP, probiotics, fiber | -- | Positive | -- |
推奨摂取タイミング： With meals and a full glass of water (240 mL minimum); space 1-2 hours from medications
Safety & Side Effects
報告されている副作用
- ⚠ Gas and bloating (common initially; start with low dose and titrate up)
- ⚠ Esophageal/bowel obstruction if taken without adequate water (CRITICAL: always take with full glass of water)
- ⚠ Abdominal cramping at high initial doses
- ⚠ May reduce appetite (feeling of fullness)
既知の相互作用
- ● May reduce absorption of medications if taken simultaneously (space 1-2 hours)
- ● Lithium (reduced absorption)
- ● Carbamazepine (reduced absorption)
- ● Diabetes medications (may enhance blood sugar lowering; monitor glucose)
耐容上限摂取量： Well-tolerated up to 30 g/day with adequate fluid intake
サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。
Frequently Asked Questions
Does Psyllium Husk help with Irritable Bowel Syndrome (IBS)?
Based on 8 studies with 900 participants, there is moderate evidence from clinical studies that Psyllium Husk may support Irritable Bowel Syndrome (IBS) management. Our evidence grade is B (Good Evidence).
How much Psyllium Husk should I take for Irritable Bowel Syndrome (IBS)?
Studies have used various dosages. A commonly studied range is 5-10 g/day (with adequate water). Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Psyllium Husk?
Reported side effects may include Gas and bloating (common initially; start with low dose and titrate up), Esophageal/bowel obstruction if taken without adequate water (CRITICAL: always take with full glass of water), Abdominal cramping at high initial doses, May reduce appetite (feeling of fullness). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Psyllium Husk and Irritable Bowel Syndrome (IBS)?
We rate the evidence as Grade B (Good Evidence). This rating is based on 8 peer-reviewed studies with 900 total participants. The overall direction of effect is positive.
Related Evidence
に関する他の成分： Irritable Bowel Syndrome (IBS)
Psyllium Husk 他の症状・状態について
References
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