Kathie,  Here is a cut and paste of the entire program.  The doctor does make note of the concern for people with kidney problems.

The following is a direct quote from Dr. Cutler's website: 

"Undo the damages of Burgers… Booze… and Rx drugs—with the Liver & Kidney Cleanse™ Fast-Acting Flush!

Now you can remove toxins… pollutants… and dangerous bile stones that can clog up your liver, kidneys, and gallbladder—in less than 16 hours!

Follow the directions below for the Fast-Acting Flush—and you can see hundreds of bile stones flush right out of your body. These stones can range in size from sand—to golf balls! No kidding. This flush can help give you a jumpstart to healthy living and may help you undo the damages of an unhealthy lifestyle.

Here’s what you’ll need:

·                                1/2 cup olive oil·                                1 large fresh grapefruit·                                4 tablespoons Epsom salt·                                4 capsules of Liver & Kidney Cleanse™·                                An herbal sleep aid such as L-ornithine or Valerian root (optional)

Step #1: Eat a normal lunch but avoid any fat or oil. For example, no butter, cheese, meat, or oil-based salad dressing. After 2 p.m., do not eat or drink anything else.

Do not take any vitamins or dietary supplements. You may take medications that are necessary.

Step #2: At 6:00 p.m., mix 1 tablespoon of Epsom salt with 1/2 cup of water. This will have an unpleasant taste. Drink the entire contents quickly. You can have a few sips of water to wash away the taste afterwards.

Step #3: At 8:00 p.m., mix 1 tablespoon of Epsom salt with 1/2 cup of water and drink the entire contents.

Step #4: At 10:00 p.m., squeeze the juice of one large grapefruit to make about 2/3 cup full. Mix in 1/2 cup olive oil, stir vigorously and drink immediately. This mixture does not taste bad. Some folks actually enjoy the taste. Also take 4 capsules of Liver & Kidney Cleanse™ and the herbal sleep aid. Go immediately to bed.

Step #5: Lie flat on your back for 30 minutes and go to sleep. You may feel the bile stones traveling through your bile ducts during the night, but don’t worry, you should not feel any pain or discomfort.

Step #6: At 6:00 a.m., mix 1 tablespoon of Epsom salt with 1/2 cup of water and drink the entire contents.

Step #7: At 8:00 a.m., take the final dose of 1 tablespoon of Epsom salt with 1/2 cup of water. Wait 2 hours and you can then resume eating and drinking normally.

 
“You will eliminate bile stones and toxins from your body.The soft stones may vary in size from tiny sesame seeds... almonds... and even golf balls!”

When you follow these instructions, you should not experience any negative effects or discomfort.

You will experience frequent bowel movements during this Fast Acting Flush. Eventually, your bowels will be completely clear and you will simply expel clear liquid. So keep drinking water to stay well hydrated during this process.

After each bowel movement, take a look at the debris that’s floating on top of the water. These should be green bile stones from your liver and gallbladder. You will see the majority of bile stones during your morning bowel movements.

The bile stones can range in size from a sand pebble to a golf ball. And you’ll probably be amazed to see that you have passed from 100 to 1,000 stones! Along with removing these bile stones, you are also eliminating dangerous toxins from your overworked organs!

Most of the stones will be greenish in color because of bile pigments. And because their size can measure 1/2 inch or larger, you can see how they can easily clog up your bile ducts and trigger serious health problems!

After you complete this Fast Acting Flush, continue to take Liver & Kidney Cleanse™ every day to help prevent future stone formation and improve the health of your hardworking organs!

Please Note: This Fast-Acting Flush releases large amounts of toxins very quickly. Most are flushed down the intestines and out
of the body. Some are dumped or absorbed into the bloodstream which your kidneys will have to filter out. If you have any history
of kidney problems or kidney disease, please consult your health care professional before starting this Fast-Acting Flush."