This randomized, parallel, multi-center, single-blind study is designed to compare the safety and efficacy of 3 bowel preparations in pediatric subjects scheduled to undergo a colonoscopy for a routinely accepted indication.

• Drug: HalfLytely and Bisacodyl Tablets - Formulation 1
• Drug: HalfLytely and Bisacodyl Tablets - Formulation 2
• Drug: NuLYTELY

Inclusion Criteria:

• Male or female patients who are undergoing colonoscopy for a routinely accepted indication, including:

  • Evaluation of BE results
  • Endosonography
  • Blood in stool
  • Anemia of unknown etiology
  • Abdominal Pain
  • Polypectomy
  • Unknown diarrhea or constipation etiology
  • Inflammatory bowel disease
• Between 6 and 16 years of age at screening.
• Otherwise in good health, as determined by physical exam and medical history.
• If female, and of child-bearing potential, is using an acceptable form of birth control (hormonal birth control, IUD, double-barrier method, depot contraceptive, sterilized, abstinent, or vasectomized spouse).
• Negative urine pregnancy test at screening, if applicable
• In the investigator's judgment, parent/guardian is mentally competent to provide informed consent to participate in the study.

Exclusion Criteria:

• Subjects with known or suspected ileus, gastrointestinal obstruction, gastric retention, bowel perforation, toxic colitis, or toxic megacolon
• Subjects impacted at screening
• Subjects with impaired consciousness that predisposes them to pulmonary aspiration.
• Subjects who are undergoing colonoscopy for foreign body removal and decompression
• Subjects with known difficulties for swallowing tablets
• Subjects with pre-existing electrolyte disturbances, such as dehydration, or those secondary to the use of diuretics.
• Subjects who are taking drugs that may affect electrolyte levels with the exception of routine diuretics.
• Subjects with known clinically significant electrolyte abnormalities such as hypernatremia, hyperphosphatemia, hypokalemia, or hypocalcemia
• Subjects who are pregnant or lactating, or intending to become pregnant during the study.
• Subjects of childbearing potential who refuse a pregnancy test.
• Subjects who are allergic to any preparation components
• Subjects who, in the opinion of the investigator, should not be included in the study for any reason, including inability to follow study procedures.
• Subjects who have participated in an investigational clinical, surgical, drug, or device study within the past 30 days.
• Any condition in parent/guardian associated with poor subject compliance (e.g., substance abuse); inability of parent/guardian to return for scheduled visits with their child.