Rarely, serious kidney problems have occurred with the use of this product. Heart failure, kidney disease, bowel problems (e.g., blockage, ulcerative colitis), or being older than 55 years can increase the risk. Taking certain medications that can affect the kidneys (see Drug Interactions section) can also increase the risk. If any of these cautions apply to you, talk with your doctor before using this drug.


This medication may be used to relieve occasional constipation. However, when treating constipation, you should use milder products (such as stool softeners, bulk-forming laxatives) whenever possible. Talk to your doctor or pharmacist about other treatment options. Your doctor may also prescribe this product (usually along with other products) to clean stool from the intestines before surgery or certain bowel procedures (such as colonoscopy, radiography). Use it only as directed by your doctor.Sodium phosphate is a saline laxative that is thought to work by increasing fluid in the small intestine. It usually results in a bowel movement after 30 minutes to 6 hours.Do not use this medication in children younger than 5 years of age unless directed by the doctor.

How to use Sodium Phosphates Solution

Read and follow all directions on the product package. If you have any questions, ask your doctor or pharmacist. To improve the taste, this product may be chilled in the refrigerator before use. Do not freeze. Mix your dose in 8 ounces (240 milliliters) of liquid and drink the mixed solution. Since your bowel movements can be very large/watery, drink plenty of clear liquids so that you do not lose too much body water (become dehydrated).

If your doctor has directed you to use this product before surgery or a bowel procedure, he or she should tell you how long before the surgery/procedure you should take this product. Follow your doctor's directions closely. After taking the medication, drink plenty of clear liquids as directed by your doctor. Doing so will help prevent serious side effects (e.g., kidney problems, dehydration). Talk with your doctor about types of liquids you can drink before your procedure.

Dosage is based on your medical condition, procedure, age, and response to treatment. Do not take more of this medication than directed, use this medication more often than once in 24 hours, or use this medication for more than 3 days unless directed by your doctor. Also, do not use any other laxative products while using this product unless directed by your doctor. Doing so may increase your risk for severe side effects.

If you are seeing a doctor for any medical problems, are on a salt-restricted diet, or if you are taking any other medications, do not use this medication to treat yourself for constipation without consulting your doctor.

This medication may cause a condition known as laxative dependence, especially if it has been used regularly for a long time. In such cases, ongoing constipation and loss of normal bowel function may occur. For most people with occasional constipation, a bulk-forming laxative (e.g., psyllium) or a stool softener (e.g., docusate) is a better and safer product. To prevent laxative dependence, consult your doctor if you need to use this medication or other laxative products for more than 7 days.

Stop using this product and contact your doctor promptly if you do not have a bowel movement within 6 hours of using this product, if you have symptoms of dehydration (see Side Effects section), if you bleed from the rectum, or if you think you may have a serious medical problem.

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CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.