Tryptophan is an essential amino acid responsible for the body's proteins, muscles, and neurotransmitters. As it is an essential amino acid, it means your body can't produce it, so you must get it from your diet and supplements.

Foods containing Tryptophan are whole milk, tinned tuna, turkey, chicken, oats, nuts, and seeds.

Tryptophan has the responsibility to help increase serotonin which can help with better quality sleep and can help relieve feelings of anxiety and irritability as serotonin is known as the happy hormone.