Soporific

The movie was so soporific that he fell asleep in the theater.

The soporific quality of the movie helped him forget his worries for a while.

The slow-moving plot of the movie was soporific, and most of the audience fell asleep.

The soporific effect of the movie put me to sleep.

The movie was so soporific that I left halfway through.

The boring book had a soporific effect on me, and I fell asleep while reading.

The movie was so soporific that I fell asleep halfway through.

The soporific nature of the movie made it hard to stay awake until the end.