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In this section: Postmarket Drug Safety Information for Patients and Providers

Information on Oral Sodium Phosphate (OSP) Products for Bowel Cleansing (marketed as Visicol and OsmoPrep, and oral sodium phosphate products available without a prescription)

Oral sodium phosphate products (OSP) are used for bowel cleansing prior to colonoscopy or other medical procedures.

Adverse reactions or quality problems experienced with the use of these products may be reported to the FDA's MedWatch Adverse Event Reporting program either online, by regular mail or by fax, using the contact information at the bottom of this page.

Related Information

Drug Safety Communication: FDA warns of possible harm from exceeding recommended dose of over-the-counter sodium phosphate products to treat constipation

Labeling Information

Prescribing and Label Information for Osmoprep

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