↗ public sourceswww.addeasygroup.com/index/Animal/product.html?cid1=1&cid2=2&cid3=9· 5 studies, 5 independent/mixed
Evidence · strong
The active substance is backed by 5 studies including meta-analyses; the verdict per claim below reflects what the literature actually shows, not the brochure. Strength reflects the active substance, not the brand.
What the manufacturer claims
Free
Captured from the product page, typed and attributed — the producer’s own statements, checked against the literature below.
Physiological
Pathogen control and reduced enteritis via a balanced, acidified gut environment
Performance
Supports growth performance of young animals
Stability
Precision intestinal-release coating delivers the acids to the lower gut
Manufacturer’s own words — not independently verified. The ledger below gives the evidence verdict for each.
Claim ↔ evidence ledger
Verdict free · receipts in Power
Each claim against the studies on the active substance, with the funding split. Open a row for the studies behind the verdict.
Claim
Verdict
Evidence & funding
PhysiologicalPathogen control and reduced enteritis via a balanced, acidified gut environment
Supported
1 study · 100% indep
›
Read Pathogen (E. coli) reduction and gut-health benefit are independently supported.
2014
Effects of benzoic acid and chelates on growth and gut health of weaned piglets2500 mg/kg benzoic acid improved final BW, ADG and FCR and reduced jejunal E. coli
PerformanceSupports growth performance of young animals
Mixed
3 studies · 100% indep
›
Read Growth benefit is well supported, with an honest low-protein-diet caveat for benzoic acid.
2024
Dietary intervention of benzoic acid for intestinal health and growth of nursery pigs (meta-analysis)Optimal benzoic acid dose ≈0.60%; benzoic acid increased ADG ≈9.5% (citric +3%, fumaric +5%) and lowered urinary pH and E. coli
Organic acids for performance enhancement in pig diets (meta-analysis)Formic/fumaric/citric acids improved weaned-piglet ADG and reduced feed:gain vs non-acidified controls
StabilityPrecision intestinal-release coating delivers the acids to the lower gut
Supported
1 study · 100% indep
›
Read Coating/distal-release rationale validated by protected-benzoic-acid trials.
2023
Evaluation of protected (coated) benzoic acid on growth, digestibility and gut health in starter pigsProtected benzoic acid acts in the distal gut and was effective at ≈0.2% (vs 0.6% free)
Bottom line. Gutclean I is a coated benzoic + citric + fumaric acid blend; all three are well-studied acidifiers with disclosed identity.
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Composition
Free
● Disclosed by manufacturer
active acids — benzoic acid + citric acid + fumaric acid (coated; proportions undisclosed)synergistic acidifier blend with precision intestinal release
◆ Referenced — with resolving source
None referenced with a resolving source yet.
Evidence — on the active substance
Table free · full-text in Power
Why these studies The evidence for a proprietary product is the evidence for its active substance. These are the studies (meta-analyses first) behind the verdicts above, with funding labelled.
Year
Study & effect size
Funding
Type
Access
2024
Dietary intervention of benzoic acid for intestinal health and growth of nursery pigs (meta-analysis)Optimal benzoic acid dose ≈0.60%; benzoic acid increased ADG ≈9.5% (citric +3%, fumaric +5%) and lowered urinary pH and E. coli
Organic acids for performance enhancement in pig diets (meta-analysis)Formic/fumaric/citric acids improved weaned-piglet ADG and reduced feed:gain vs non-acidified controls
Effects of benzoic acid and chelates on growth and gut health of weaned piglets2500 mg/kg benzoic acid improved final BW, ADG and FCR and reduced jejunal E. coli
Evaluation of protected (coated) benzoic acid on growth, digestibility and gut health in starter pigsProtected benzoic acid acts in the distal gut and was effective at ≈0.2% (vs 0.6% free)
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Analysis & tools
◆ Power
The working map a maker won’t give you — built only from the evidence on this page. Nothing here is marketing.
◆ Power view
Open the analyst workbench
Dose benchmark, the independent-vs-sponsored split, the pooled meta-analysis effects, the contradictions and the gaps — all derived from the studies above.
Dose: label vs effective trial range vs EU max
Independence-of-evidence breakdown
Pooled meta-analysis effect sizes
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Dose benchmark
Label / recommendedNot stated on page
Effective in trialsBenzoic acid ≈0.2% (coated) to 0.6% (free)
EU maximumBenzoic-acid zootechnical authorisations specify per-species maxima; citric/fumaric limited by good practice
Coating allows a lower effective dose by acting distally.
Pooled estimates from the systematic reviews/meta-analyses above — the closest thing to a settled answer.
Discussion — grounded in the evidence
Gutclean I is a coated benzoic + citric + fumaric acid blend; all three are well-studied acidifiers with disclosed identity.
An independent 16-paper meta-analysis shows benzoic acid improves nursery-pig growth (≈+9.5% ADG, optimum ≈0.6%), lowers urinary pH and reduces E. coli.
Independent trials confirm the coating rationale — protected benzoic acid acts in the distal gut and works at a lower inclusion (≈0.2%).
Honest caveat: in low-protein diets benzoic acid can reduce growth via glycine/nitrogen loss, so diet formulation matters.
Regulatory status is species-dependent: citric/fumaric are acidity regulators, and benzoic acid is additionally a zootechnical additive for pigs.
Where studies disagree: Benzoic acid's benefit can reverse in crude-protein-deficient diets, where its conversion to hippuric acid drains glycine and nitrogen — so the effect is diet-dependent.
Gaps: Exact blend proportions are not disclosed, so research is at the component level. Most data are for the benzoic-acid component in pigs; poultry data for the specific blend are thinner. No product-specific patent captured.
Manufacturer’s stated mechanism (their words): A coated synergistic blend of benzoic, citric and fumaric acids: citric and fumaric acids create an acidic micro-environment that enhances the antibacterial action of benzoic acid, while the coating delays release so the acids act in the distal small intestine and hindgut, lowering pathogen load and supporting gut health and growth.
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Put this beside alternatives on the same active substance (e.g. HMBi / other rumen-protected methionine), and take the data with you.
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