Human immunodeficiency virus, or HIV, destroys cells that are part of the body's immune system and may cause acquired immunodeficiency syndrome, or AIDS. AIDS greatly damages the body's ability to fight off microorganisms, leading to repeated infections, certain cancers and life-threatening illness. Astragalus root is an herbal remedy that may help boost the immune system in HIV-infected people, possibly delaying onset of symptoms and helping the body fight off infection. Consult your doctor to determine whether taking astragalus is appropriate for you.
Astragalus Root
The dried and powdered root of the perennial plant Astragalus membranaceus is used in traditional Asian medicine. Herbalists recommend astragalus to strengthen the immune system and say it contains antioxidant compounds that protect cells from damage caused by free radicals. Astragalus may also have anti-inflammatory activity. Taken as a tonic, astragalus may protect against respiratory infections, hasten recovery from these illnesses and support the immune system in patients with HIV or AIDS.
Astragalus and HIV
Astragalus is a potential treatment for HIV because the immune system malfunctions in patients infected with the virus. It increases the effectiveness of certain immune cells, including natural killer cells and other immune cells that engulf bacteria and viruses. Astragalus contains compounds called saponins that may be responsible for this effect, according to the Memorial Sloan-Kettering Cancer Center. In a 2008 study published in the "Journal of Immunology," an extract of astragalus called TAT2 enhanced the ability of immune cells to destroy viruses such as HIV.
How to Use
Astragalus root is available as powder, as a tincture or in capsules or tablets. Where possible, choose a standardized preparation to minimize differences from batch to batch. The usual dose of powdered astragalus root is between 500 and 1000 mg several times daily, or 250 to 500 mg of standardized extract three or four times a day. Astragalus may also be used to prepare a tea by adding 3 to 6 g of dried root to 12 oz. of hot water.
Precautions
Astragalus is generally considered safe at the recommended doses, although it is not recommended if you are pregnant or breastfeeding. Because of its effects on the immune system, astragalus may interact with immunosuppressive drugs or with corticosteroids. If you take prescription drugs, ask your doctor if consuming astragalus is advisable for you.
