St. John’s wort has long been used medicinally as an anti-inflammatory for strains, sprains, and contusions. St. John’s wort has also been used to treat muscular spasms, cramps and tension that result in muscular spasms.
St. John’s wort is reported to relieve anxiety and tension and to act as an antidepressant. Studies have shown that St. John’s wort extracts may exert their antidepressant actions by inhibiting the reuptake of the neurotransmitters serotonin, norepinephrine, and dopamine.
This herb is useful for pelvic pain and cramping. According to the 1983 British Pharmacopoeia, St. John’s wort is specifically indicated for “menopausal neuroses”: Many women who experience anxiety, depression and other emotional disturbances during menopause may benefit from the use of this herb.
The National Cancer Institute has conducted several studies showing that St. John’s wort is a potential cancer-fighting drug. One study showed that mice injected with the feline leukemia virus were able to fight off the infection after just a single dose of St. John’s wort.
Bio-flavonoids, in general, serve the reduction of vascular fragility and inflammation. Since flavonoids improve venous-wall integrity, St. John’s wort is useful in treating swollen veins. St. John’s wort preparations may be ingested for internal bruising and inflammation or following a traumatic injury to the external muscles and skin.
Other uses include heart palpitations, moodiness and other symptoms of attention deficit-hyperactivity disorder (ADHD), obsessive-compulsive disorder (OCD) and seasonal affective disorder (SAD).