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Psyllium Husk 用于 Chronic Constipation

A

Multiple meta-analyses confirm psyllium significantly increases stool frequency (mean +2.4/week) and stool weight. Superior to placebo with NNT of 3 for constipation relief. Recommended by AGA and ACG guidelines.

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A

结论

Multiple meta-analyses confirm psyllium significantly increases stool frequency (mean +2.4/week) and stool weight. Superior to placebo with NNT of 3 for constipation relief. Recommended by AGA and ACG guidelines.

Key Study Findings

Review
The role of dietary fiber in the gastrointestinal tract: when, how and why?
Dose: None vs: None Outcome: None 效果: None None

研究人群: Review of dietary fiber role in GI tract

Review
Dietary management of chronic constipation: a review of evidence-based strategies and clinical guidelines.
Dose: None vs: None Outcome: None 效果: None None

研究人群: Review of dietary management of chronic constipation

Review
The role and therapeutic effectiveness of Plantago ovata husk (psyllium husk) in the prevention and …
Dose: None vs: None Outcome: None 效果: None None

研究人群: Review of psyllium husk for constipation and diarrhea

Meta-Analysis n=410
Conservative, physical and surgical interventions for managing faecal incontinence and constipation in adults with central …
Dose: None vs: Placebo Outcome: Constipation symptoms 效果: SMD -0.62, 95% CI -1.10 to -0.14 None

研究人群: Alzheimer's disease patients

Randomized Controlled Trial Double-blind
The effect of fiber supplementation with agave fructans or psyllium plantago in symptoms of constipation …
Dose: None vs: None Outcome: Constipation symptoms 效果: None p > 0.05

研究人群: Constipation patients

Meta-Analysis
Systematic review and meta-analysis: Foods, drinks and diets and their effect on chronic constipation in …
Dose: Various foods, drinks, diets vs: Control diet or placebo Outcome: Stool output, transit time, symptoms, QoL 效果: None None

研究人群: Adults with chronic constipation

Key Statistics

18

研究数量

1400

受试者

Positive

A

等级

Referenced Papers

The Medical letter … 2025
Current opinion in … 2024 2 次引用
Critical reviews in … 2022 99 次引用
Journal of neurogastroenterology … 2021 37 次引用
Complementary therapies in … 2021 30 次引用
The Medical letter … 2020
International journal of … 2016 69 次引用
Revista espanola de … 2016 27 次引用
American family physician 2015
Alimentary pharmacology & … 2014 59 次引用
The American journal … 2013 421 次引用
Journal of clinical … 2011 30 次引用
Alimentary pharmacology & … 2011 3 次引用
International journal of … 2007 375 次引用
Journal of the … 2007 84 次引用
Current treatment options … 2006 24 次引用
Acta chirurgica Iugoslavica 2006
Der Internist 2005 5 次引用
Clinical evidence 2004
Alternative medicine review … 2002 6 次引用
Diseases of the … 2001 199 次引用
Health technology assessment … 1997 128 次引用
Allergy proceedings : … 1990 12 次引用
Gastroenterology nursing : … 1989 3 次引用
Biomedicine & pharmacotherapy … 1986 4 次引用
JAMA 1964

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

常用剂量

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: Well-tolerated up to 30 g/day with adequate fluid intake

研究中使用的剂量

剂量 持续时间 效果 N
None -- Mixed --
None -- Mixed --
None -- Positive --
None -- Mixed 410
None -- Negative --
Various foods, drinks, diets -- Positive --
None -- Positive --
None 1 weeks Neutral --

最佳服用时间: With meals and a full glass of water (240 mL minimum); space 1-2 hours from medications

Safety & Side Effects

已报告的副作用

  • 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)

已知相互作用

  • 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)

可耐受最高摄入量: Well-tolerated up to 30 g/day with adequate fluid intake

在开始服用任何补充剂之前,请务必咨询您的医疗保健提供者。

Frequently Asked Questions

Does Psyllium Husk help with Chronic Constipation?
Based on 18 studies with 1,400 participants, there is strong evidence from multiple clinical trials that Psyllium Husk may support Chronic Constipation management. Our evidence grade is A (Strong Evidence).
How much Psyllium Husk should I take for Chronic Constipation?
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 Chronic Constipation?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 18 peer-reviewed studies with 1,400 total participants. The overall direction of effect is positive.

Related Evidence

Psyllium Husk 用于其他健康状况

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