Mostly known for helping people relax, L-theanine is an amino acid found primarily in green and black tea and some mushrooms.

It’s said to help ease anxiety, stress, and reduce insomnia.

As a result of its effective calming properties, the valerian herb is commonly used as an ingredient in sleep aid supplements.

This herb is often referred to as “nature’s Valium,” and people have used it since the Middle Ages to treat sleep disorders such as insomnia.

Valerian may also help your child to relax and may have benefits for those experience anxiety and other similar symptoms.

As cited by healthline.com

Gamma aminobutyric acid (GABA) is a naturally occurring amino acid that works as a neurotransmitter in your brain. Neurotransmitters function as chemical messengers. GABA is considered an inhibitory neurotransmitter because it blocks, or inhibits, certain brain signals and decreases activity in your nervous system.

When GABA attaches to a protein in your brain known as a GABA receptor, it produces a calming effect. This can help with feelings of anxiety, stress, and fear. It may also help to prevent seizures.

As a result of these properties, GABA has also become a popular supplement in recent years. This is partly because it isn’t available from many food sources. The only foods that contain GABA are fermented ones, such as kimchi, miso, and tempeh.

As cited by healthline.com