Amino acids are organic compounds that contain nitrogen, carbon, hydrogen, and in some cases sulfur. They are the basis of proteins and other molecules that are important for the functioning of the body. Amino acids are important for many bodily functions, including the growth and repair of tissues, the production of hormones and enzymes, and the strengthening of the immune system.
They can also help regulate metabolism and maintain the body's water balance. They are divided into two groups: essential and non-essential. Essential amino acids cannot be produced by the body and have to be obtained from the diet. Non-essential amino acids are produced by the body from other amino acids.
Amino acid supplementation can help improve sleep, since some of them are precursors to important neurotransmitters for regulating sleep, such as serotonin and melatonin. In addition, supplementation can help reduce stress and anxiety, which are two factors that can cause sleep disturbance or be aggravated by a lack of quality night rest.