Comparative Pharmacology
Head-to-head clinical analysis: GO EVAC versus PEG 3350 AND ELECTROLYTES.
Peer-Reviewed Evidence
Head-to-head clinical analysis: GO EVAC versus PEG 3350 AND ELECTROLYTES.
GO-EVAC vs PEG 3350 AND ELECTROLYTES
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Promotes gastrointestinal motility by acting as a stimulant laxative, likely through direct irritation of the colonic mucosa and possibly via local effects on enteric neurons.
PEG 3350 is an osmotic laxative that retains water in the bowel lumen via hydrogen bonding, increasing fecal water content and stimulating peristalsis. Electrolytes (sodium sulfate, potassium chloride, sodium bicarbonate, magnesium sulfate) prevent significant fluid and electrolyte shifts by maintaining isotonicity.
10 mg orally once daily, with or without food.
4 liters orally of the reconstituted solution administered as a single dose at 240 mL every 10 minutes or 1 to 1.5 L/hour until rectal effluent is clear. Alternatively, 240 mL every 10 minutes until 4 L consumed.
None Documented
None Documented
4.5-6 hours in healthy volunteers; prolonged to 10-14 hours in elderly patients and those with moderate renal impairment (CrCl 30-50 mL/min).
Not applicable; PEG 3350 undergoes minimal systemic absorption (<0.2%), thus no meaningful terminal half-life. Systemic half-life of absorbed fraction is <2 hours.
Primarily renal; approximately 60% eliminated unchanged in urine within 24 hours, with 20% as metabolites. Biliary/fecal excretion accounts for 15-20%, and the remainder is metabolized via glucuronidation.
Primarily fecal (96–98%) as unabsorbed PEG 3350; electrolytes absorbed are excreted renally (sodium, potassium) and via feces (biliary excretion negligible).
Category C
Category C
Osmotic Laxative
Osmotic Laxative