Side Effects of Estroven

Estroven is an herbal supplement that claims to relieve some of the symptoms of perimenopause and menopause. According to the manufacturer, Estrogen is made with all-natural ingredients including black cohosh and soy isoflavones. Their formula also includes vitamin E, some B vitamins and folic acid. Estroven claims to reduce the occurrence of hot flashes, night sweats, vaginal dryness and forgetfulness. There are some side effects associated with Estroven, and as with any herb or herbal supplement, consult your doctor before using it.

Is This an Emergency?

If you are experiencing serious medical symptoms, seek emergency treatment immediately.

Soy Allergy

Estroven contains soy isoflavones, which are capable of causing an allergic reaction in some. According to, soy typically causes a mild allergic reaction, although in some it can be more serious. A mild allergic reaction can produce a tingling feeling in the mouth, itching, runny nose and nausea. The signs of a severe allergic reaction to soy isoflavones are more likely to occur in those with asthma or who are allergic to peanuts. Symptoms include tightness in throat and airways, wheezing, dizziness and possibly, loss of consciousness. A severe reaction is a medical emergency that requires immediate treatment. It is also possible to have an allergy to black cohosh or other ingredients in Estroven; users should read the label carefully.

Stomach Cramps

According to, the recommended dose of Estroven is one capsule taken a few hours before going to bed. Estroven may cause stomach cramping if taken on an empty stomach, so it is best to take it with food. Taking it with food also allows for better absorption of vitamins E and B contained in its formula. Estroven claims the ingredients produce a calming effect that aids in relaxing and getting a good night's sleep.

Headache, Dizziness and Slow Heartbeat

Estroven also contains black cohosh, and although some studies have shown that it is effective when used as directed for hot flashes, vaginal dryness and mood disturbances, states its safety and efficacy has not been tested past 6 months. Black cohosh can cause headache and dizziness, especially when taken in high doses. It can also cause irregular or slow heartbeat. Additionally, some individuals experience low blood pressure and visual disturbances while taking products containing black cohosh.

Dangerous Effects

According to the University of Maryland Medical Center, black cohosh contains sugar compounds called glycosides; isoferulic acids, which have anti-inflammatory effects; and plant-based estrogens, or phytoestrogens. Phytoestrogens have a similar structure to estrogen, and are thought to mimic its effects on the body. The soy isoflavones contained in Estroven are also phytoestrogens, so those who have had hormone-receptive breast, ovarian or cervical cancer should only take Estroven under a physician's supervision. Liver toxicity has been reported with high doses of black cohosh, but a direct link has not been established. Estroven should be taken only as directed and anyone experiencing yellowing of the skin and eyes should contact her physician immediately.