dim and intermittent, used to describe light that is caused by distant and sporadic sources, such as window light in the country or starlight when it is partly cloudy.
In the Star-Spangled Banner, the donzerly light comes from the explosions ("rockets' red glare, the bombs bursting in air").
Either liquid niquil or any liquid drink with melatonin, Ashwaganda or other sleeping aids in a liquid form. If warm tea helps you get to sleep that could be sleepy juice too.
I could not sleep so I chugged some sleepy juice and now I'm so tired and sleepy.