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Increased urinary riboflavin excretion resulting from boric acid ingestion
The Journal of Laboratory and Clinical Medicine
|July 1, 1978
Summary
Boric acid ingestion significantly increases urinary riboflavin (vitamin B2) excretion in most patients. This previously unrecognized effect highlights a potential hazard associated with boric acid consumption.
Area of Science:
- Toxicology
- Nutritional Biochemistry
Background:
- Boric acid is a common household chemical.
- Its toxicological effects are not fully understood.
- Interactions with essential vitamins are largely uncharacterized.
Purpose of the Study:
- To investigate the effect of boric acid ingestion on riboflavin (vitamin B2) excretion.
- To identify potential metabolic disturbances caused by boric acid exposure.
Main Methods:
- Urinary riboflavin levels were measured in 14 patients following boric acid ingestion.
- A competitive protein binding assay was used for riboflavin determination.
- Patient data was collected over a 2.5-year period from a poison control center.
Main Results:
- Approximately two-thirds of patients showed significantly increased urinary riboflavin excretion after boric acid ingestion.
- The majority of the excess riboflavin was excreted within 24 hours.
- No significant differences were noted between pediatric and adult patients.
Conclusions:
- Boric acid ingestion is associated with a marked increase in riboflavin excretion.
- This suggests a potential disruption of vitamin B2 metabolism or homeostasis.
- These findings indicate a previously unrecognized hazard of boric acid ingestion.