Middle-aged and older people, for example, did not have more difficulty falling asleep.

It is useful for insomnia patients with difficulty falling asleep.

Ruth was still so irritated with Hannah that she had some difficulty falling back to sleep.

It is prescribed for people who have difficulty falling asleep.

Ever since I was young, I've had difficulty falling asleep.

I began to have difficulty falling asleep at night.

Furthermore, the elderly often wake several times throughout the night and have difficulty falling asleep.

The old man was highly excited and had great difficulty falling asleep.

Elizabeth may have difficulty falling asleep and asked Addie to sit with her.

Looper did not have much difficulty falling asleep after the game.