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[Tablets in stool? A common problem!].

L V Schuerch¹, J Nyfeler, G Holder

¹Abteilung für Klinische Pharmakologie, Kantonsspital Basel.

Schweizerische Medizinische Wochenschrift

|July 17, 1999

Summary

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Intact tablet excretion in stools does not mean medication failed. Extended-release pharmaceutical forms continuously release active compounds, leaving insoluble coats visible in feces. No further patient action is needed.

Area of Science:

Pharmacology
Gastroenterology
Drug Delivery Systems

Context:

Patients and physicians frequently observe intact tablets in stools after oral drug administration.
This phenomenon is often misinterpreted as medication failure.

Purpose:

To clarify the reasons behind the excretion of apparently intact tablets.
To educate healthcare providers and patients about the nature of extended-release drug formulations.

Summary:

Certain pharmaceutical forms are designed for prolonged drug release, continuously releasing the active compound during intestinal transit.
The insoluble outer coat of these formulations is excreted wholly or partially in stools, appearing intact.
This visible excretion does not indicate that the active drug was not released or absorbed.

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Impact:

Corrects the common misconception that visible tablet remnants in stools signify therapeutic failure.
Reduces unnecessary patient anxiety and physician interventions.
Promotes a better understanding of advanced drug delivery systems and their physiological implications.