Tales of tablets laced with rat poison are often used to caution against the use of 3,4-methylenedioxymethamphetamine (MDMA) or are attributed to a bad batch of tablets associated with specific adverse health events. However, the absence of confirmed reports of tablets containing a rodenticide suggest these tales are more likely urban myths. The presence of rodenticides in the drug market has the potential to cause serious adverse health effects, as was observed recently with the use of synthetic cannabis containing brodifacoum, which resulted in numerous hospitalisations and fatalities. This report describes the identification of the anti-coagulant rodenticide coumatetralyl in four recent cases of similar, seized tablets. Due to the lower toxicity of coumatetralyl compared with brodifacoum, the determined tablet dosage would be unlikely to result in health effects after consumption of a single tablet. However, repeat consumption of multiple tablets would increase the risk of toxicity.

传说中带有大鼠毒药的药片通常被用来警告人们不要使用3,4-亚甲二氧基甲基苯丙胺（MDMA），或者归因于不良片剂与特定的不良健康事件有关。但是，由于没有关于含有杀鼠剂的药片的确凿报道，这些故事更可能是都市神话。毒品市场中存在的杀鼠剂有可能对健康产生严重的不利影响，最近发现，使用含溴地那非的合成大麻会导致大量住院和死亡。该报告描述了在最近四起类似的缉获片剂中，抗凝灭鼠剂香豆碱的鉴定。由于香豆碱的毒性比溴地芬低，确定的片剂剂量在单片服用后不太可能对健康产生影响。但是，重复食用多片会增加中毒的风险。