Article: Neurogen pauses trial of insomnia drug candidate adipiplon because of next-day effects

Biotechnology company Neurogen Corp. says it has stopped a clinical trial of its insomnia candidate adipiplon because of negative side effects.

The company is developing immediate-release and controlled-release forms of the drug, and was testing a tablet that combined both versions.

Neurogen says the combined drug may not be working as expected, leading to "a higher than anticipated ...

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