Alginic Acid Cimetidine
Alginic Acid/Cimetidine is a combination medication used to treat acid-related conditions such as gastroesophageal reflux disease (GERD), heartburn, and indigestion. The alginic acid component creates a protective foam barrier in the stomach to prevent acid reflux, while cimetidine works by decreasing stomach acid production through H2 receptor blockade. This dual-action approach makes it particularly effective for managing symptoms of excessive stomach acid.
A combination medication that reduces stomach acid production and creates a protective barrier to relieve heartburn and GERD symptoms.
Key facts at a glance
- RxNorm
- 818150
- Generic
- Alginic Acid / Cimetidine
- 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.
Treatment of gastroesophageal reflux disease (GERD), heartburn, acid indigestion, and conditions involving excessive stomach acid. May also be used for hiatal hernia-related discomfort and sour stomach.
Cimetidine is an H2 receptor antagonist that blocks histamine signals in stomach cells, reducing acid secretion. Alginic acid reacts with saliva to form a low-pH foam that floats on top of stomach contents, creating a physical barrier that prevents acid from flowing back into the esophagus.
May interact with other medications including blood thinners, certain antidepressants, and drugs metabolized by the liver. Cimetidine can affect hormone levels and may cause dizziness. Avoid lying down immediately after taking. Not recommended for long-term use without medical supervision. Inform your doctor if you have kidney or liver problems before using.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
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