Alginic Acid Aluminum Hydroxide
Alginic acid combined with aluminum hydroxide is an over-the-counter antacid medication used to treat heartburn, acid indigestion, and gastroesophageal reflux disease (GERD). The aluminum hydroxide neutralizes excess stomach acid while alginic acid creates a protective foam barrier that helps prevent acid from flowing back up into the esophagus. This combination is typically used by adults experiencing occasional digestive discomfort.
A dual-action antacid that neutralizes stomach acid and forms a protective barrier to relieve heartburn and GERD symptoms.
Key facts at a glance
- RxNorm
- 1008412
- Generic
- Alginic Acid / Aluminum Hydroxide
- Class
- multi-ingredient
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Treats occasional heartburn, acid indigestion, sour stomach, and gastroesophageal reflux disease (GERD). May also be used as adjunct therapy for peptic ulcers and hiatal hernia symptoms.
Aluminum hydroxide neutralizes gastric acid by raising stomach pH, while alginic acid reacts with sodium bicarbonate to form a viscous foam that floats on top of stomach contents, creating a physical barrier against acid reflux into the esophagus.
Take after meals and at bedtime for best results. Separate from other oral medications by at least 1-2 hours to avoid absorption interference. Aluminum-containing antacids may cause constipation. Avoid prolonged daily use beyond 2 weeks without consulting a healthcare provider. Not recommended for patients with severe kidney disease.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy