First, identify whether caffeine may be to blame. Caffeine in foods should be limited to the early part of the day, if at all. If insomnia prevents this, then consider a few dietary supplement options to help you unwind. Calcium and magnesium - these minerals are essential for proper nerve function. Choose capsule or liquid form for fast absorption.
Combinations are available in capsule form.
Some are available as teas. Levels decline with age and stress and this contributes to poor sleep quality. One to three milligrams is usually sufficient, but consider more if it seems to be ineffective. Consult the cautionary statement on the label for contraindications.