| Belgium | | Caffeine was found in 2 cases and BMK in 1 case. |
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| Bulgaria | | In the tablets containing amphetamine the most frequently reported impurities are caffeine, theophiline, quinine, paracetamol, pyracetam, phenacetine, lidocaine, metoclopramide and CPP and the tablets containing MDMA reported impurities are caffeine and CPP. |
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| Czech Republic | | Microcellulose, lactose and magnesium sulphate are the most frequent substances reported. |
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| Denmark | | No information available. |
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| Germany | | Caffeine, lactose and cellulose are the most frequent substances reported. |
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| Estonia | | : |
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| Ireland | | : |
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| Greece | | No information available. |
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| Spain | | : |
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| France-A | | Caffeine, lactose, lidocaine, cellulose and amidon are the most frequent substances reported. |
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| France-B | | No information available. |
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| Italy | | : |
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| Cyprus | | Caffeine and vanillin are the substances reported. |
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| Latvia | | No information available. |
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| Lithuania | | : |
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| Luxembourg | | Caffeine and sugar are the most frequent substances reported. |
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| Hungary | | Caffeine, cellulose and lactose are the most frequent substances reported. |
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| Malta | | Lactose, magnesium sterate, stearic acid, palmitic acid (normal tablet excipients) and caffeine are the most frequent substances reported. |
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| Netherlands | | mCPP is the most widely used adulterant for tablets sold as ecstasy |
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| Austria | | No information available. |
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| Poland | | No information available. |
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| Portugal | | No information available. |
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| Romania | | : |
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| Slovenia | | No information available. |
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| Slovakia | | No information available. |
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| Finland | | No information available. |
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| Sweden | | : |
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| United Kingdom | | No substance reported |
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| Croatia | | No information available. |
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| Turkey | | Caffeine, Paracetamol, Teofiline and Diphenylhydramine are the most frequent substances reported. |
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| Norway | | No information available. |
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