Astragalus membranaceus is a plant that is a member of the bean family and grows in parts of Asia,such as China, Korea and Japan. In supplement form it may help boost the immune system in individuals recovering from chemotherapy or who have HIV. The product may also treat constipation, increase urine output and may treat condition such as the common cold and diabetes. In addition to the positive effects of the herbal supplement, astragalus may cause adverse reactions in some individuals.
Gastrointestinal Distress
The most common side effects of astragalus include reactions in the gastrointestinal tract. The herbal supplement may increase the activity in the intestines and cause diarrhea. Additional possible adverse reactions include an upset stomach, nausea, bloating and intestinal gas, according to Drugs.com.
Decreased Blood Clotting and Blood Pressure
Taking Astragalus membranaceus may decrease the clotting abilities of the body, according to the American Cancer Society. This may cause an increase in bleeding and bruising. Blood in the intestinal tract may cause tarry stools and blood in the stomach causes vomit that resembles coffee grounds. Taking supplements of this herb may also cause a decrease in blood pressure. Individuals who have naturally low blood pressure or individuals taking medications to lower their blood pressure should speak with a health care professional before taking astragalus.
Allergic Reactions
Individuals may experience and allergic reaction after taking astragalus. An allergy to a bean or legume increases the risk that you also have an allergy to astragalus. Signs and symptoms of an allergic reaction include difficulty breathing, increased heart rate, hives and a swelling of the airway, face, tongue and lips. A severe allergic reaction affecting breathing is a medical emergency and requires immediate medical attention to prevent further complications, such as death.
Risk for Individuals with Immune System Disorders
Individuals with an autoimmune disorder or individuals who take medication to suppress the immune system may have adverse reactions when taking astragalus membranaceus. The supplement may boost the activity of the immune system, which may negatively affect a person with a condition such as multiple sclerosis, rheumatoid arthritis and lupus. Medications that suppress the immune system, such as prednisone or cyclosporine, to prevent organ transplant rejection may become less effective if combined with astragalus.
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