Somnetic inducer
From Memory Alpha, the free Star Trek reference
A somnetic inducer is a medical device that can be used if a patient suffers from insomnia.
The somnetic inducer is simply put next to the bed of the sleepless person and will help the patient fall asleep.
When Geordi La Forge suffered from sleeplessness due to brainwashing by Romulans in 2367, he came to sickbay and Doctor Beverly Crusher gave him an somnetic inducer to help him sleep. (TNG: "The Mind's Eye")
