Trifolium pratense (red clover) is a species of clover native to Europe, west Asia and Northwest Africa. But it has been planted and naturalized in many other regions. It is a herbaceous short lived perennial plant.

It grows from 20 to 80 centimeters in height. Its flowers are dark pink with a paler base, 12–15 mm long, produced in a dense inflorescence. It is widely grown as a fodder crop, which can increase the soil fertility by the nitrogen fixation. It is a valuable green manure crop.

Red clover contains isoflavones, or estrogen like compounds, which can mimic the effect of endogenous estrogen. The use of red clover to relieve menopausal symptoms has been proved safe.

The isoflavones from red clover have been used to treat the menopause symptoms. A large, well-controlled study of high-isoflavone red clover extract supplements showed a modest reduction of hot flushes.

Traditionally, red clover has been administered to regularize the irregular periods and to balance the acid-alkaline level of the vagina to promote conception.

Red clover has been reported to be used for the treatment of various ailments like bronchitis, burns, cancers, ulcers, sedation, asthma, syphilis and to help to quit smoking.

Due to its activity on estrogen receptors, it is contraindicated in people with a history of estrogen-sensitive conditions. But some others have suggested that the high isoflavone content counteracts this, and provides benefits.

Due to its coumarin derivatives, it should be used with caution by the individuals with coagulation disorders and those undergoing anti coagulation therapy.

Red clover is the national flower of Denmark and the state flower of Vermont.