Ingredient glossary
Glycine
What it is
The smallest amino acid — and a quiet workhorse in sleep research.
What it does
Taken before bed at 3g, shown to help people fall asleep faster and rate their sleep quality higher — partly by helping lower core body temperature, one of the body's natural sleep signals.
The dose that works
Exactly 3g — the studied dose.
Where it lives in the system
Sleep (3g). Full clinical dose, not a sprinkle.
Good to know
It's mildly sweet on its own, which is a nice bonus in a nighttime drink.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.