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Related Experiment Videos

Cimetidine-sucralfate drug interaction.

W A Ritschel, P S Banerjee, H P Koch

    Methods and Findings in Experimental and Clinical Pharmacology
    |May 1, 1984
    PubMed
    Summary
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    Cimetidine (C) absorption is slowed by sucralfate (S), indicating a drug interaction. Co-administration also increases aluminum absorption, highlighting potential safety concerns.

    Area of Science:

    • Pharmacokinetics
    • Drug Interactions
    • Gastrointestinal Pharmacology

    Background:

    • Cimetidine is a common medication for acid reflux.
    • Sucralfate is used to treat ulcers.
    • Potential interactions between these drugs require investigation.

    Purpose of the Study:

    • To investigate the pharmacokinetic interaction between cimetidine and sucralfate.
    • To determine the effect of sucralfate on cimetidine absorption.
    • To assess the impact of cimetidine on aluminum absorption from sucralfate.

    Main Methods:

    • A crossover study design was used with beagle dogs.
    • Three groups received cimetidine alone, sucralfate alone, or cimetidine plus sucralfate.
    • Radioactive cimetidine and aluminum levels were measured.

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    Main Results:

    • Sucralfate significantly decreased cimetidine's absorption rate (ka) and increased its time to maximum concentration (tmax).
    • Cimetidine significantly increased the maximum concentration (Cmax) and area under the curve (AUC) of aluminum.
    • Sucralfate delays cimetidine absorption; cimetidine increases systemic aluminum availability.

    Conclusions:

    • Cimetidine and sucralfate exhibit a pharmacokinetic interaction.
    • Sucralfate delays cimetidine absorption, potentially reducing its efficacy.
    • Concomitant use increases systemic aluminum exposure, warranting caution.