Subjective effects of glycine ingestion before bedtime on sleep quality
Taking 3 grams of glycine before bed for 4 days led to improved self-rated sleep quality in women. Participants felt more refreshed and less fatigued upon waking. The study suggests that glycine may positively influence perceived restfulness even in healthy individuals.
Research Institute for Health Fundamentals, Ajinomoto Co., Kawasaki, Japan
Link to the study
Glycine ingestion improves subjective sleep quality in human volunteers
People who took 3 grams of glycine in the evening before bed fell asleep faster and reached deep sleep sooner. In the morning, they felt less tired and had better focus during the day. The study shows that glycine can improve sleep quality without changing overall sleep duration or sleep architecture.
Department of Psychiatry, Jikei University School of Medicine, Tokyo, Japan
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The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers
In people who slept slightly less than usual, taking 3 grams of glycine before bed helped them feel more refreshed after just one night. Attention improved and fatigue decreased, and this effect persisted over the following days. This suggests glycine may help even with short-term sleep deprivation.
Frontier Research Labs, Institute for Innovation, Ajinomoto Co., Japan
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New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep
People with poorer sleep quality experienced easier sleep onset and a calmer night after taking glycine before bed. The study confirms that glycine may be a natural and safe aid for better sleep.
Frontier Research Laboratories, Institute for Innovation, Ajinomoto Co., Japan
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Multifarious Beneficial Effect of Nonessential Amino Acid, Glycine
A review of scientific studies shows that glycine has a positive effect not only on sleep, but also on overall health, recovery, and mental well-being.
Department of Biochemistry, Rayalaseema University, Kurnool, India
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