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An 80-year-old man developed delirium and hallucinations following concomitant use of solifenacin [Vesicare] and trazodone; a pharmacodynamic drug-drug interaction could have occurred.
The man was admitted due to insomnia and anxiety symptoms, and was diagnosed with anxiety unspecified disorder. He reported insomnia, fear, fatigue, headache, nausea, chest pain and shortness of breath. He had started solifenacin 5mg daily [route not...