Mengtuoshi San
US alternative (Rx)蒙脱石散
Common in China
Active ingredient: dioctahedral smectite (diosmectite)
Mengtuoshi San isn't sold in the US — the closest option is loperamide
dioctahedral smectite (diosmectite) is not FDA-approved in the United States. For the same symptoms, US clinicians typically use loperamide.
It is prescription-only — ask a US doctor or pharmacist whether loperamide is right for you.
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Coupon prices for Loperamide HCl 2mg Capsule
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Recently observed near ZIP 33101. Coupon prices vary by ZIP code.
CVS Pharmacy
Provided by LowerMyRx
observed Jul 18, 2026
Navarro Discount Pharmacy
Provided by LowerMyRx
observed Jul 18, 2026
Walgreens
Provided by LowerMyRx
observed Jul 18, 2026
Publix
Provided by LowerMyRx
observed Jul 18, 2026
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Diosmectite is not FDA-approved and is not among the actives permitted in the US OTC antidiarrheal monograph, so it is not sold as a drug in the US, where loperamide or bismuth subsalicylate is used for the same purpose.
This is general information, not medical advice. Talk to your doctor or pharmacist before starting, stopping, or substituting any medicine.
Prices shown by FineRx are estimates based on recently observed pricing data and may change at any time. Final price is determined by the pharmacy or applicable savings provider.
FineRx does not provide medical advice, diagnosis, or treatment recommendations. Medication and prescription questions should be discussed with a qualified healthcare professional or pharmacist.
FineRx is an independent price comparison service. Pharmacy and third-party names may be shown for identification and comparison purposes.