Fleet Oil Enema Dosage
For adults and children 12 years and older, administer 120 mL as a single dose, with a maximum of 120 mL in 24 hours 1.
Standard Dosing
The FDA-approved dosing for Fleet Mineral Oil Enema is straightforward:
- Single dose: 120 mL (approximately 130 mL per container)
- Maximum daily dose: 120 mL in 24 hours
- Age restriction: 12 years and older 1
This is a rectal administration product designed for relief of constipation through its lubricant properties.
Critical Safety Considerations
Do not confuse Fleet Oil Enema (mineral oil) with Fleet Phosphate Enema (sodium phosphate) - this is a common and potentially dangerous pitfall. Sodium phosphate enemas carry significant risks of severe metabolic complications including:
- Extreme hyperphosphatemia and hypocalcemia
- Acute renal failure
- Mortality rates up to 45% in elderly patients, even with standard doses 2
- Electrolyte abnormalities particularly in elderly and high-risk patients 3
The mineral oil formulation you're asking about is considerably safer than sodium phosphate preparations.
Pediatric Considerations
For children under 12 years, Fleet Oil Enema is not FDA-approved. Alternative approaches for pediatric patients include:
- Infants: Normal saline enema at 10 mL/kg 3
- Children with severe constipation: Olive oil enemas at 1-2 mL/kg have shown 77.6% effectiveness for fecal disimpaction 4
Administration Timing
The enema should be administered when needed for constipation relief. For procedural bowel preparation (such as sigmoidoscopy), studies have used Fleet enemas 2 hours pre-procedure 5, 6, though this applies to phosphate formulations and procedural contexts rather than the oil enema for simple constipation.
Important Caveats
- Mineral oil is generally well-tolerated with adverse events primarily limited to gastrointestinal effects consistent with its laxative mechanism 7
- Do not exceed the recommended dose or frequency
- The product is designed for occasional use, not chronic management of constipation