What is St. John's wort commonly used to treat?

St. John's wort is commonly used to treat depression and anxiety due to its active compounds, particularly hypericin and hyperforin, which are believed to influence neurotransmitter levels in the brain. This herbal remedy is often considered a natural alternative to antidepressant medications. Numerous studies support its efficacy in managing mild to moderate depression, and it may also have an anxiolytic effect. Its use has been well-documented in herbal medicine and psychopharmacology, reinforcing its role in mental health treatment.

The other options do not accurately represent the primary use of St. John's wort. While some may argue for its benefits in chronic pain, digestive issues, or sleep disorders, these are not its main indications as recognized in clinical practice or research literature. Its primary application as an antidepressant is what distinguishes it in the context of herbal therapies.