But8.5

Butyrate

Sodium/Calcium Butyrate

Short-chain fatty acid postbiotic that feeds gut lining cells, reduces inflammation, and supports the gut-brain axis.

immunitygut healthpostbioticSCFAinflammation
Last reviewed: January 1, 2025
8.5/10
40+ studies
Evidence
high
Safety
300-600mg sodium/calcium butyrate, 2-3x daily
Dose
4-12 weeks
Time to Effect
Enteric-coated sodium or calcium butyrate
Best Form

Butyrate is a short-chain fatty acid naturally produced when gut bacteria ferment fiber. It's the primary fuel for colonocytes (colon cells), maintains gut barrier integrity, has anti-inflammatory effects, and supports the gut-brain axis. Supplemental butyrate bypasses the need for fiber fermentation, directly supporting gut health.

Mechanisms of Action

⚡
Colonocyte Fuel

Primary energy source for colon cells

🧬
HDAC Inhibition

Epigenetic anti-inflammatory effects

🛡️
Gut Barrier Support

Strengthens tight junctions

Recommended Dose

300-600mg sodium/calcium butyrate, 2-3x daily

300mg2000mg

Optimal Timing

  • With meals
  • Spread throughout day

Take with food

Best Form

Enteric-coated sodium or calcium butyrate

Alternatives: Tributyrin (butyrate precursor), Sodium butyrate capsules

Enteric coating delivers more butyrate to the colon. Tributyrin may provide sustained release.

Duration

Minimum: 4 weeks

Optimal: 12 weeks

Cycling: Not required

Note: Taking with food reduces GI discomfort. Enteric coating helps delivery to colon.

Personalized Dosage Calculator

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✨
Gut Healing

Improved gut barrier integrity

2-4 weeks
65% of users notice thispositive
🔥
Reduced Gut Inflammation

Lower intestinal inflammation

4-8 weeks
55% of users notice thispositive
High SafetyMax safe dose: Up to 2000mg/day used in studies
🟢
IBD patients

May be beneficial; work with gastroenterologist

Who Should NOT Take This

  • Known allergy or hypersensitivity to Butyrate or related compounds

Drug Interactions

Valproic acid (Depakote)moderate

Both affect similar pathways; may alter drug metabolism

Phenobarbital and other CYP inducersmild

May affect hepatic cytochrome P450 enzyme activity

Possible Side Effects

GI discomfortuncommon

Tip: Take with food; use enteric-coated

Sulfur-like odorcommon

Tip: Enteric coating reduces this

Warnings

  • Strong odor is normal
  • Enteric coating recommended for colon delivery

Top studies from 40+ peer-reviewed papers

meta-analysisn=1519
DOI

Nikolova VL et al. • JAMA psychiatry (2021)

“This systematic review and meta-analysis found that gut microbiota perturbations were associated with a transdiagnostic pattern with a depletion of certain anti-inflammatory butyrate-producing bacteria and an enrichment of pro-inflammatory bacteria in patients with depression, bipolar disorder, schizophrenia, and anxiety.”
Key Findings:
  • There was a small decrease in phylogenetic diversity (SMD = -0.24; 95% CI, -0.47 to -0.001) and no significant differences in Shannon and Simpson indices.
  • Published in JAMA psychiatry (2021)
  • Further research warranted to confirm findings
meta-analysisn=2099
DOI

So D et al. • The American journal of clinical nutrition (2018)

“Dietary fiber intervention, particularly involving fructans and galacto-oligosaccharides, leads to higher fecal abundance of Bifidobacterium and Lactobacillus spp. but does not affect α-diversity.”
Key Findings:
  • Dietary fiber intervention, particularly involving fructans and galacto-oligosaccharides, leads to higher fecal abundance of Bifidobacterium and Lactobacillus spp. but does not affect α-diversity.
  • Further research is required to better understand the role of individual fiber types on the growth of microbes and the overall gut microbial community.
  • This review was registered at PROSPERO as CRD42016053101.
animaln=110
DOI

Ma T et al. • Cell reports. Medicine (2025)

“All rights reserved.”
Key Findings:
  • A randomized, double-blind, placebo-controlled crossover trial involving 110 adults with chronic constipation (Rome IV criteria) demonstrates that a 3-week Probio-Eco intervention significantly improves constipation symptoms, stool straining, and worry scores.
  • These findings highlight the comprehensive efficacy of Probio-Eco and provide robust evidence for its clinical application in constipation management.
  • This study was registered at Chinese Clinical Trial Registry (ChiCTR2100054376).Copyright © 2025 The Authors.
  • Published by Elsevier Inc.
meta-analysisn=2091
DOI

Gao M et al. • Translational psychiatry (2023)

“This meta-analysis examined the effects of Butyrate.”
Key Findings:
  • A random-effects model with restricted maximum-likelihood estimator was used to synthesize the effect size (assessed by standardized mean difference [SMD]) across studies.
  • In subgroup analyses with regional variations(east/west) as a predictor, patients who were in the West had a lower Chao1 level (SMD -0.42[-0.74 to -0.10]).
  • Subgroup meta-analysis showed Firmicutes level was decreased in patients with depressive disorder who were medication-free (SMD -1.54[-2.36 to -0.72]), but Bacteroidetes level was increased (SMD -0.90[0.07 to 1.72]).
  • In the meta-regression analysis, six variables cannot explain the 100% heterogeneity of the studies assessing by Chao1, Shannon index, Firmicutes, and Bacteroidetes.
meta-analysisn=27334
DOI

Bahji A et al. • Journal of addiction medicine (2022)

“The current meta-analyses provide evidence that several medications for AUDs are effective and safe and encourage the expanded use of these medications in the clinical setting.”
Key Findings:
  • Nefazodone (RR = 2.11; 95% CI, 1.42-3.13), aripiprazole (RR = 1.97; 95% CI, 1.36-2.88), carbamazepine (RR = 1.85; 95% CI, 1.03-3.32), and nalmefene (RR = 1.17; 95% CI, 1.01-1.35) were associated with the most dropouts.
  • Baclofen (RR = 0.83; 95% CI, 0.70-0.97) and pregabalin (RR = 0.63; 95% CI, 0.43-0.94) caused fewer dropouts than placebo.
  • Nalmefene (RR = 3.26; 95% CI, 2.34-4.55), fluvoxamine (RR = 3.08; 95% CI, 1.59-5.94), and topiramate (RR=2.18; 95% CI, 1.36-3.51) caused more dropouts from adverse events over placebo.
  • For reduced heavy drinking, disulfiram (RR = 0.19; 95% CI, 0.10-0.35), baclofen (RR = 0.72; 95% CI, 0.57-0.91), acamprosate (RR = 0.78; 95% CI, 0.70-0.86), and oral naltrexone (RR = 0.81; 95% CI, 0.73-0.90) were efficacious against placebo.
39
Total Studies
8.3/10
Avg Quality
10-27,334
Sample Size Range
1992-2025
Research Span

Study Type Distribution

RCT
20
Meta-Analysis
8
Systematic Review
7
Animal
2
Review
1
Preclinical
1

This information is for educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before starting any supplement.