Inositol

Inositol is a naturally occurring sugar alcohol found in various foods and produced by the human body. It plays a role in cell signaling and is a component of cell membranes. As a supplement, it is often used to support various physiological functions.

Inositol is sometimes included in "sleep stacks" due to its potential to influence neurotransmitter activity, particularly serotonin, which is involved in mood regulation and sleep cycles. It is used by individuals seeking to support relaxation and improve sleep quality.