**Glycine**! People need to intake an average of 10g a day of glycine for maintaining the various structures in your body composed of collagen and to support a variety of biological processes.

People generally get their daily glycine intake from meat and protein. Whey protein has the highest concentration of it, but it's still not that great.

Glycine is super cheap, and is incredibly well tolerated, has virtually no medication contradictions, and can be  consumed in doses as high as 90g as a day (used in the treatment of schizophrenia). Although I would consult a doctor before taking that much in a single day.

The main mechanisms of action:

1. Glycine drops your core body temp after ingesting, this aids in falling asleep.
2. It supports your bodies immobilization process after falling asleep so you toss and turn less
3. dose dependent release of serotonin upon ingestion without affecting concentrations of other neurotransmitters, this is apparently supports your circadian rhythm
4. Glycine directly passes the blood-brain barrier and is immediately used as a neurotransmitter in your brain inducing an inhibitory effect that feels almost sedative-like. This has the affect of quieting racing thoughts. This is wonderful for people who suffer from anxiety and can be used to treat spiraling thoughts via sublingual ingestion of 1-2g.

Glycine is sweet like sugar, so you can add it to tea or whatever you like. I take between 3-5g before I go to bed everynight. The affect is consistent, and since I started using it daily I've literally had the  most restful sleep of my life, this has dramatically improved my emotional stability. 

A 1/3 of a tsp equates to about 1g. I take it sublingually and let it dissolve under my tongue as I lay down to go to bed. My girlfriend is a light sleeper and suffers from insomnia and shes tried a variety of  different things for it. Glycine is the only thing that works consistently for her. 

I also take it when I get up, because glycine doesn't actually induce sleep, its non drowsy during the daytime. 

This is not medical advice, I just wanted to share my experience (: