COLPREP KIT
Clinical safety rating: caution
Comprehensive clinical and safety monograph for COLPREP KIT (COLPREP KIT).
ColPrep Kit contains polyethylene glycol (PEG) 3350 and electrolytes (sodium sulfate, potassium sulfate, magnesium sulfate). PEG is an osmotic agent that causes water retention in the colon, increasing stool volume and stimulating bowel movements. Electrolytes maintain fluid and electrolyte balance, preventing shifts during bowel cleansing.
| Metabolism | Polyethylene glycol (PEG) 3350 is minimally absorbed and not metabolized; it is excreted unchanged in feces. Electrolytes are absorbed and excreted renally. |
| Excretion | Primarily fecal as unabsorbed drug; minimal renal excretion (<1%). |
| Half-life | Not applicable; colonic lavage solution with negligible systemic absorption. |
| Protein binding | Not applicable; not absorbed systemically. |
| Volume of Distribution | Not applicable; confined to gastrointestinal lumen. |
| Bioavailability | Oral: <0.1% (negligible systemic absorption). |
| Onset of Action | Oral: 1-2 hours (first bowel movement). |
| Duration of Action | Oral: 4-6 hours (bowel cleansing effect). |
Colprep Kit (sodium picosulfate/magnesium oxide/citric acid) for bowel cleansing: Two doses administered orally. First dose: 1 sachet reconstituted in water in the evening prior to colonoscopy. Second dose: 1 sachet on the morning of the procedure, at least 5 hours before the procedure. Each sachet is dissolved in 150 mL water, diluted to a total volume of 500 mL, and consumed over 30-60 minutes followed by additional water.
| Dosage form | POWDER |
| Renal impairment | Contraindicated in severe renal impairment (CrCl <30 mL/min). No specific dose adjustment for mild-to-moderate impairment; use with caution and ensure adequate hydration. |
| Liver impairment | No dose adjustment required for mild-to-moderate hepatic impairment. Safety not established in severe hepatic impairment (Child-Pugh C); use with caution. |
| Pediatric use | Safety and efficacy not established in pediatric patients (<18 years). No approved pediatric dosing. |
| Geriatric use | No specific dose adjustment. Use with caution due to increased risk of electrolyte disturbances and dehydration; ensure adequate hydration and monitor renal function. |
| 1st trimester | Consult provider |
| 2nd trimester | Consult provider |
| 3rd trimester | Consult provider |
Clinical note
Comprehensive clinical and safety monograph for COLPREP KIT (COLPREP KIT).
| Breastfeeding | Polyethylene glycol is not absorbed systemically and is unlikely to pass into breast milk. M/P ratio not established. Considered compatible with breastfeeding. |
| Teratogenic Risk | Colprep Kit contains polyethylene glycol and electrolytes. Polyethylene glycol is not teratogenic in animal studies; no human studies available. Risk to fetus during all trimesters is considered low due to minimal systemic absorption. |
| Fetal Monitoring |
■ FDA Black Box Warning
No FDA black box warning.
| Serious Effects |
["Gastrointestinal obstruction or ileus","Bowel perforation","Toxic colitis or toxic megacolon","Gastric retention","Known hypersensitivity to any component of the kit"]
| Precautions | ["Risk of fluid and electrolyte abnormalities (e.g., hyponatremia, hypokalemia, hypomagnesemia, seizures).","Cardiac arrhythmias in patients with electrolyte imbalances or prolonged QT interval.","Renal impairment: risk of acute phosphate nephropathy if using sodium phosphate-based products; however, this product contains sulfate and magnesium.","Gastric retention or gastrointestinal obstruction: do not use in patients with ileus, gastric retention, bowel obstruction, or perforation.","Aspiration risk: use with caution in patients with impaired gag reflex or those prone to regurgitation."] |
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| Monitor maternal fluid and electrolyte balance during administration. Fetal heart rate monitoring not routinely required unless maternal dehydration or electrolyte imbalance occurs. |
| Fertility Effects | No known adverse effects on fertility. Polyethylene glycol is not systemically absorbed and does not affect reproductive function. |