Glycine for Better Sleep

Research by the Ajinomoto Group has shown that glycine, taken before bedtime, helps the body reach deep sleep more quickly. In other words, glycine helps you fall asleep and improves sleep quality.

Have you ever slept long enough but still woken up feeling tired? While it’s essential to get enough hours of sleep, the quality of your sleep is also important.

Research by the Ajinomoto Group has shown that glycine, taken before bedtime, promotes good quality sleep, helping you to wake up in the morning feeling refreshed, energized and ready to be active.

Let’s take a look at how the amino acid glycine is connected to better sleep.

The Ajinomoto Group conducted a study on people who reported dissatisfaction with the quality of their nightly sleep. 

One group took glycine before bed while the other group received a placebo. The level of fatigue reported by all the subjects the next morning was recorded. The group that took glycine woke up feeling refreshed, and reported feeling less fatigue than the placebo group.

In another study involving people who had reported dissatisfaction with their nightly sleep, one group of subjects was given glycine while the other group received a placebo. The next day, the subjects’ relative work efficiency and drowsiness were measured.

The subjects who had taken glycine before sleeping showed less fatigue and drowsiness the next day and were more efficient when working at a computer.

There are two types of sleep: Rapid Eye Movement (REM) sleep, which is the sleep phase when dreams tend to happen, and non-REM (NREM) sleep. The deepest stage of NREM sleep is called slow-wave sleep (SWS). During SWS, the body actively secretes growth hormone to heal muscles and skin. 

In one study, a group of subjects was given glycine before bed while another group was given a placebo. The group that took glycine reached slow-wave sleep more quickly. 

This research shows that taking glycine helps you reach deep sleep more quickly and improves your quality of sleep by stabilizing your sleep rhythms.

Besides contributing to better sleep quality, amino acids also support physical growth and health. Let’s take a closer look at the power of amino acids to keep skin and hair moisturized, and boost immunity.

Research by the Ajinomoto Group has shown that glycine, taken before bedtime, promotes good quality sleep so that you wake up in the morning feeling refreshed and ready to be active.

In one study, a group of subjects was given glycine before bed while another group was given a placebo. The group that took glycine reached deep sleep more quickly. This research shows that taking glycine helps you reach deep sleep more quickly and improves your quality of sleep by stabilizing your sleep rhythms.

Glycine is one of 11 amino acids synthesized naturally in the human body. Also found in many, it is especially abundant in seafood such as scallops and shrimp.