St. John's wort has been used as a medicinal herb for centuries. Early users considered it a magic herb, but today it is used more commonly to treat mild depression. According to Medicinal Herb Info, St. John's wort originally came from Europe, but now grows wild in much of Canada and the United States.
Primary Use
According to the U.S. National Library of Medicine, St. John's wort is mainly used to treat mild to moderate depression. This use of the herb has been extensively studied and its use is considered safe and effective. But it isn't necessarily effective in treating major depression. Other common uses for St. John's wort are for premenstrual syndrome or peri-menopausal symptoms. Studies have shown some promise, but more study needs to be done to make a clear recommendation for its use for these problems.
Other Medicinal Uses
The U.S. National Library of Medicine says that St. John's wort has been used for these conditions as well: anxiety disorder, atopic dermatitis, attention deficit hyperactivity disorder (ADHD), nerve pain, obsessive-compulsive disorder (OCD), pain relief (after surgery), premenstrual syndrome (PMS), seasonal affective disorder (SAD), social phobia and human immunodeficiency virus (HIV). However, there are not enough data to conclusively recommend its use in these cases.
Forms
The entire herb is dried and used medicinally. St. John's wort can be purchased in capsule, tea or extracts.
Potential Side Effects & Contraindications
Pregnant or breast-feeding women should not use St. John's wort, nor should children take the herb. More research needs to be done to prove its safety and effectiveness for children. Some people who take St. John's wort develop photosensitivity. The National Center for Complementary and Alternative Medicine tells us that it may also cause anxiety, dry mouth, dizziness, gastrointestinal symptoms, fatigue, headache, or sexual dysfunction---although these symptoms are not common.
Warning
St. John's wort may have harmful interactions with other medications. Be sure to consult with your healthcare provider before beginning to take St. John's wort. Any new substance can potentially cause allergic reactions. Be aware of any rashes, hives, difficulty breathing or chest pain you may experience while taking this herb. If these symptoms occur, stop taking St. John's wort and contact your healthcare provider.
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