Glycine

Glycine is an amino acid that functions as a neurotransmitter in the brain. It is naturally produced by the body and is also found in protein-rich foods. As a supplement, glycine is often used to support sleep quality and promote relaxation.

It is typically taken orally before bedtime and may help individuals fall asleep more quickly and experience more restful sleep. Glycine is generally considered safe for most adults when taken at recommended dosages.