Comparative Pharmacology
Head-to-head clinical analysis: COLYTE versus GOLYTELY.
Peer-Reviewed Evidence
Head-to-head clinical analysis: COLYTE versus GOLYTELY.
COLYTE vs GOLYTELY
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Colyte is a polyethylene glycol (PEG)-based osmotic laxative that induces diarrhea by retaining water in the gastrointestinal tract via osmotic forces, thereby cleansing the colon.
Polyethylene glycol 3350 is an osmotic laxative that induces diarrhea by retaining water in the bowel lumen through osmotic activity. Electrolytes (sodium sulfate, potassium chloride, sodium bicarbonate) prevent significant electrolyte absorption or loss.
4 L oral solution administered as a single dose at a rate of 240 mL every 10 minutes until complete.
240 mL (oral) every 10 minutes until 4 L consumed or rectal effluent is clear; typically 4 L total over 3-4 hours.
None Documented
None Documented
Not applicable; systemic absorption is negligible (<0.06%), so a terminal elimination half-life is clinically irrelevant. The gastrointestinal transit time for the solution is approximately 1-3 hours.
Not applicable (PEG 3350 is not significantly absorbed; effective half-life in GI tract is approximately 2-4 hours for colonic clearance).
COLYTE (polyethylene glycol 3350 and electrolytes) is minimally absorbed; <0.1% of the dose is excreted renally. The majority is eliminated unchanged in feces via the gastrointestinal tract, with fecal excretion accounting for >99%.
Primarily fecal elimination of unabsorbed polyethylene glycol 3350. Minimal systemic absorption (<0.06%), less than 0.06% recovered in urine as intact PEG 3350; electrocytes and sulfate (from sodium sulfate) are renally excreted.
Category C
Category C
Osmotic Laxative
Osmotic Laxative