Many factors can contribute to decreased Thyroid function which can result in symptoms of fatigue, trouble concentrating, extended sleeping, depression, dry skin and more. Stress, genetic factors or dietary, hormonal changes are usual culprits and in some cases small lifestyle and dietary changes can help achieve better hormone balance. When your levels are borderline low and don't yet warrant a prescription from your doctor, this supplement may help. Herbal extracts rich in Iodine such as Kelp and Bladderwrack and stress adaptogenic herbs such as Ashwaganda, Licorice, Schisandra, Astragalus, Hawthorn and Ginseng help support proper Thyroid hormone balance to help improve mood and ease symptoms. Best when used to support normal functioning and wellness for those that may be noticing lower than normal Thyroid hormone levels, but not significantly low enough to require prescription strength medications.