Complex sentence: Overdoses of amisulpride have been linked with torsades de pointes and is moderately dangerous in overdose (with the TCAs being very dangerous and the SSRIs being modestly dangerous).
Split into simpler sentences: Overdoses of amisulpride have been linked with torsades de pointes. Amisulpride is moderately dangerous in overdose (with the TCAs being very dangerous and the SSRIs being modestly dangerous).