It is also widely praised as a rejuvenative tonic and is believed to be capable of preventing gray hair and other signs of aging. Research conducted on the root has shown it to lower blood cholesterol levels and decrease the symptoms of atherosclerosis. Studies in China have investigated its use in enhancing the immune system and promoting the formation of red blood cells. Many herbalists and TCM practitioners recommend 4-8 grams of fo ti per day, which can be taken either in capsules or in tea form. Processed and powdered fo ti root can be found in many health food stores.
Most stores also sell fo ti tablets and capsules.
Taking more than 15 grams of processed fo ti root powder may cause numbness or tingling in the arms and legs. Unprocessed root may cause mild diarrhea in some individuals. There are currently no known drug interactions with fo ti. However, patients should consult with a health care provider before taking fo ti supplements. Bringing Chinese Herbs to the West .