Try an Ayurvedic remedy.
Insomnia is caused by an increase of VATA dosha in the mind or nervous system. Nutmeg is one of the best medicines for calming the mind. It also reduces high vata in the colon and nervous system.
Take 1/8 teaspoon in a cup of warm milk before bed to promote sound sleep
It worked wonders for me last night.
As an additional bonus - Nutmeg is one of the best spices for increasing absorption especially in the small intestine. This may explain why my tongue was clear of ama the next morning.
Source: D. Frawley the yoga of herbs