Bismuth accumulates in the body during treatment with tripotassium dicitrato bismuthate

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Abstract
Bismuth concentration was measured in plasma, dried leucocytes and urine in nine patients before, during and after treatment with tripotassium dicitrato bismuthate (De-Noltab 2 b.d.) for 6 weeks. During treatment there was an 8.5-fold rise in median plasma bismuth concentration (P < 0.01), a non-significant doubling of leucocyte bismuth content, and a 349-fold rise in 24-h urinary bismuth excretion (P < 0.01). The significantly increased urinary bismuth excretion continued for at least 3 months after cessation of treatment with tripotassium dicitrato bismuthate, indicating accumulation of bismuth during treatment with this drug.