Mylanta Adult Dosing
For adults and children 12 years and older, the recommended dose of Mylanta is 10–20 mL (equivalent to 800–1,600 mg aluminum hydroxide, 800–1,600 mg magnesium hydroxide, and 80–160 mg simethicone per dose) taken between meals, at bedtime, or as directed, with a maximum of 60 mL (six doses) in any 24-hour period. 1
Dosing Details
- Standard dose range: 10–20 mL per dose 1
- Active ingredients per 10 mL: 1
- Aluminum hydroxide: 800 mg
- Magnesium hydroxide: 800 mg
- Simethicone: 80 mg
- Maximum daily dose: 60 mL (six doses) in 24 hours 1
- Duration limit: Do not use maximum dosage for more than 2 weeks 1
- Administration: Shake well before use; measure with provided dosing cup 1
Important Clinical Considerations
Drug Interactions
- Azithromycin: Administer Mylanta at least 1 hour before or 2 hours after azithromycin to prevent reduced antibiotic bioavailability 2
- General absorption concerns: Aluminum-magnesium antacids can reduce absorption of multiple medications; timing separation is critical 3, 4
Special Populations
Chronic Kidney Disease (CKD): 2
- Aluminum hydroxide may be used as a phosphate binder but should be limited to 1–2 days maximum to avoid aluminum toxicity
- Prolonged aluminum exposure in CKD causes bone disease and neurotoxicity 5, 2
- Magnesium-containing products require caution due to risk of magnesium accumulation with impaired renal clearance 2
Pediatric patients (under 12 years): Ask a doctor before use 1
Therapeutic Limitations
- Rapid onset but short duration: Mylanta acts quickly but provides shorter symptom relief than H₂-receptor antagonists or proton-pump inhibitors 2
- Limited GERD efficacy: Antacids provide limited symptom relief for gastroesophageal reflux disease and are relatively benign but not first-line therapy 2