5-HTP
Amino Acids
Sleep duration refers to the total amount of sleep obtained, either during the nightly sleep episode or during the 24 hours. Getting a full, uninterrupted sleep can be difficult and is considered a disorder, but there are natural solutions that can help.
Dietary supplement
Consistent Effects
Strength of Effects
Scientific articles
Amino Acids
Herbs, Roots & Barks
Herbs, Roots & Barks
Mineral
Hormone/Hormone Precursor
Amino Acids
Herbs, Roots & Barks
Fatty Acids
Spices
Herbs, Roots & Barks