The very common calcium phosphate stone can only exist in a urinary tract that is not acidic. Ascorbic acid (vitamin C's most common form) acidifies the urine, thereby dissolving phosphate stones and preventing their formation.

A lot more here...
http://www.doctoryourself.com/kidney.html

Dear Prostonemaker.

In your place, I would begin taking two or
three capsules of Chanca Piedra capsules,
twice each day. Chanca Piedra meams "stone
breaker" throughout the Amazon basin of South America. The indigenous people have used
Chanca Piedra for thousands of years to
eliminate the kinds of stones that are causing
you such pain.

In addition to eliminating kidney stones and
gallstones, Chanca Piedra will reduce uric acid in the kidneys and increase urination.
It's a wonderful herb to harmonize and balance
your liver, gall bladder, and kidneys. Do a
Search on Chanca Piedra, and you'll be happy
with what your find. However, it is not
recommended for women who are pregnant, or those who are breast-feeding babies.

I have no kidney problems, but I take one
capsule of Chanca Piedra each day as part
of my prevention-program. I buy it from
Raintree Nutrition, a company that imports
the herb from Brazil. It's 100 percent
Chanca Piedra. Raintree sells a bottle of
100 capsules, 500 mg each, for $16.95. Their website is: http://www.raintreenutrition.com
and their order line is 1-800-780-5902.
In your place, I'd pay extra to have them
send the order to you via two-day service.

Even quicker would be to go to your health
food store, and see if they have Chanca Piedra on hand.

My second suggestion is that you begin drinking about 3 cups a day of the herbal
tea recommended by Andreas Moritz for eliminating kidney stones. Let me quote from
his wonderful book, The Amazing Liver & Gallbladder Cleanse (www.ener-chi.com)

"The following herbs, when taken daily for 20
to 30 days, can help dissolve and eliminate all kinds of kidney stones, including uric acid stones, oxalic acid stones, phosphate stones, and amino acid stones." (p.118)

The ten herbs he recommends are Marjoram (1 oz), Cat's Claw (1 oz), Comfrey Root (1 oz),
Fennel Seed (2 oz), Chicory Herb (2 oz), Uva
Ursi (2 oz), Hydrangea Root (2 oz), Gravel Root (2 oz), Marshmallow Root (2 oz), and
Golden Rod Herb (2 oz).

If you don't want to buy the herbs individually, Andreas suggests you purchase
them from a small herbal company in Minnesota
called The Present Moment. They sell a big
batch of the pre-mixed herbs for about $27.00.
I have a huge jar of their herbs in my kitchen,
as I type. About twice a week, I make a quart
of their kidney-cleanse tea.

Their website is: http://www.presentmoment.com
The phone # is 1-800-378-3245. MAKE SURE
you ask for the herbal mix that Andreas Moritz
recommends for kidney cleansing.

You might also want to go to your health food
store tomorrow. Copy the names of the 10 herbs you need. There are probably other
packaged teas that contain most of those
herbs. If so, you could be drinking that
tea tomorrow night.

My final suggestion is very easy and quite
tasty: Begin eating Watermelon every day.
Eat the red fruit and also eat the seeds.
Watermelon is wonderful for your kidneys
and bladder. I buy a whole melon, and cut
it into 8 parts. I eat one piece of melon
every day they're in season. It's absolutely
delicious, and so, so good for you!

Good luck with your quest to cleanse your kidneys of those nasty stones! I will keep
you in my prayers.

Blessings,

Owen