Tannic Acid
Tannic-12 S is a brand-name medication that contains tannic acid as its active ingredient. It is primarily used for the treatment of diarrhea and related gastrointestinal discomfort. The medication works by exerting an astringent effect on the intestinal lining, helping to reduce intestinal secretions and inflammation.
Tannic-12 S is an antidiarrheal medication containing tannic acid that helps manage diarrhea by astringent action on the intestinal mucosa.
Key facts at a glance
- RxNorm
- 353007
- Generic
- Tannic-12 S
- Class
- brand-name
- 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.
Tannic-12 S is used to treat acute and non-specific diarrhea, including traveler's diarrhea and diarrhea associated with minor gastrointestinal disturbances. It may also be used for symptomatic relief of mild gastrointestinal irritations.
The exact mechanism of Tannic-12 S is not fully specified, but tannic acid acts as an astringent on the gastrointestinal mucosa. It works by precipitating proteins and forming a protective layer on the intestinal lining, which may help reduce intestinal secretions, decrease inflammation, and slow intestinal transit time.
This is a brand-name medication; patients should use only as directed by their healthcare provider. Side effects may include constipation or abdominal discomfort. It should not be used for diarrhea caused by bacterial infections or poisoning. Prolonged use should be avoided without medical supervision. Consult a doctor if diarrhea persists beyond 48 hours or is accompanied by fever.
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 July 26, 2026. · Read our editorial policy