Objectives: The present study is focused on the determination of thallium (I) ions in homeopathic drugs. Methods: The determination was carried out using the Differential Pulse Anodic Stripping Voltammetry (DPASV) technique coupled with the flow-injection measuring system (FIA-DPASV). Results: The thallium content was analyzed in two commercial homeopathic preparations (Thallium aceticum 5CH and 9CH), which include two different concentrations of thallium. It was established, that the mean

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... ntration of thallium in the 5CH drug was at 6.67 ng L -1 in the administered daily dose, whereas in case of 9CH the value was at 2.1 ng L -1 of thallium. Conclusion: The obtained results indicate that the application of the studied homeopathic drugs for medical purposes is not associated with any hazards in terms of possible toxicity due to thallium content.