Tier 2 — strong

Betaine reduces the irritating effect of sodium lauryl sulfate on human oral mucosa in vivo

Irma Rantanen, Ingrid Nicander, Kirsti Jutila, Stig Ollmar, Jorma Tenovuo, Eva Söderling
Acta odontologica Scandinavica 2002 60(5):306-310

Bibliography

PubMed
PMID 12418722
DOI
10.1080/00016350260248292
Funding
Funding was not specified in the indexed record or accessible funding metadata.
Competing interests
A competing-interest declaration was not available in the indexed record or accessible disclosure metadata.

Study snapshot

DesignRandomized controlled oral-mucosa experiment
ModelHuman participants
Sample20 volunteers, with additional low-detergent tests in 5
InterventionDetergent solutions with or without 4% betaine
Duration15-minute exposure; follow-up to 45 minutes
EndpointsMucosal irritation; Electrical impedance

What the study showed, in plain terms

Published in 2002, this source examined betaine hcl and topical formulations. Design: Randomized controlled oral-mucosa experiment. Sample/model: 20 volunteers, with additional low-detergent tests in 5. The exposure or intervention was Detergent solutions with or without 4% betaine. Follow-up or treatment period: 15-minute exposure; follow-up to 45 minutes.

Betaine reduced irritation under one sodium-lauryl-sulfate condition but not consistently across detergent concentrations or types.

Acute local exposure and surrogate irritation measurements; no broad protective or systemic effect is demonstrated.

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Key findings

  • Betaine reduced irritation under one sodium-lauryl-sulfate condition but not consistently across detergent concentrations or types.
  • The recorded outcome domains were Mucosal irritation; Electrical impedance.
  • The result applies to the tested exposure: Detergent solutions with or without 4% betaine; 15-minute exposure; follow-up to 45 minutes.

What this study can and cannot tell us

  • Acute local exposure and surrogate irritation measurements; no broad protective or systemic effect is demonstrated.
  • An individual controlled trial must be interpreted alongside its comparator, sample size, endpoint selection and independent replication. It does not validate a different commercial formulation or a general longevity claim.
  • Source basis: Indexed abstract and bibliographic data. Missing method details, funding information or participant denominators are not inferred.

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Dr. Khaled Mahmoud, MBBChCritical Care Medicine, Longevity Science & Editorial Direction Dr. Amr Yasser, PhDCardiometabolic, Musculoskeletal, Gut & Bioavailability Dr. Abdulla Mostafa, PhDCellular Senescence, Neurological, Mitochondrial & Brain-Ageing Biology