When I went to acupuncture for heel spur pain Master Choi saw the swelling around ankles where my socks wrap my ankles, he immediately said that I had bad kidneys.....he was right. I'm not saying that your kidneys are bad I'm just trying to show that some of these Chinese doctors are pretty darn smart. Either way after seeing a kidney specialist I found that my kidneys were only working at 75 percent, that's why I had swelling on my ankles. The kidney specialist said that there's nothing anyone can do about kidney failure and that all I can do is try and stay healthy and that everyone's kidneys eventually decline in function. I went back to my acupuncturist and he gave me this really expensive herbal tea. It didn't taste very good but I drank it anyway (twice a day for 3 weeks). The next time I saw my kidney specialist (including blood test) he said that my kidneys had gone from 75 percent efficiency to 88 percent. (90 to 100 is normal). The kidney specialist couldn't understand how my kidneys had improved. I told him about the herbal tea and he brushed it off. I've gone back to the kidney specialist 3/4 times since then and my kidneys are still greatly improved and my ankles don't get swollen any more. Master Choi said that I could take the herbal tea again and it would improve my kidneys even more but, unfortunately, it cost $2400 so I'm still thinking about it.