Bismuth Subgallate / Mepenzolate / Phthalylsulfathiazole
This multi-ingredient medication combines an intestinal protectant, an antispasmodic agent, and an antibiotic to treat various gastrointestinal conditions. It is primarily used for managing infectious and non-infectious diarrhea along with associated abdominal discomfort and cramping.
A combination gastrointestinal medication used to treat diarrhea and related digestive symptoms.
Key facts at a glance
- RxNorm
- 1008442
- Generic
- Bismuth Subgallate / Mepenzolate / Phthalylsulfathiazole
- 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 acute and chronic diarrhea, including infectious diarrhea, traveler's diarrhea, and diarrhea associated with irritable bowel syndrome. Also used for gastrointestinal cramping and discomfort.
Bismuth subgallate provides mucosal protection and has antimicrobial properties. Mepenzolate is an anticholinergic that reduces intestinal spasms and motility. Phthalylsulfathiazole is a sulfonamide antibiotic that inhibits susceptible bacteria in the gastrointestinal tract.
May cause darkening of tongue or stool. Use with caution in patients with glaucoma, urinary retention, or myasthenia gravis. Complete the full course of therapy as prescribed. Not recommended for use in patients with sulfonamide allergy. Consult healthcare provider if symptoms persist beyond a few days.
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 28, 2026. · Read our editorial policy