Last Updated: May 10, 2026

CLINICAL TRIALS PROFILE FOR LOPERAMIDE HYDROCHLORIDE; SIMETHICONE


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All Clinical Trials for loperamide hydrochloride; simethicone

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00685607 ↗ Study to Determine the Best Way to Measure How Quickly the Drug Can Give Relief From Sudden Diarrhea Completed Johnson & Johnson Consumer and Personal Products Worldwide Phase 4 2008-10-01 For six hours following drug administration, subjects will rate the severity of specific symptoms. At the end of the six hour study, subjects will rate the overall effectiveness of the product.
NCT00778115 ↗ Bioequivalence Study of Loperamide Hydrochloride 2 mg and Simethicone 125 mg Tablet Under Fasting Conditions Completed Ranbaxy Laboratories Limited N/A 2004-11-01 The objective of this study is to compare the relative bioavailability of Loperamide HCl 2 mg and simethicone 125 mg tablets (Ranbaxy) with that of Imodium® Advanced caplets (McNeil) in healthy subjects under fasting condition
NCT02217982 ↗ Pilot Study to Assess Dimethyl Fumarate Related GI Symptom Mitigation Terminated Biogen Phase 4 2014-07-01 Single site, open label, randomized design in patients with relapsing forms of Multiple Sclerosis. At the Screening Visit, the patient will be given a diary containing the MAGIS scale to be completed once a day for the first two weeks while on Dimethyl Fumarate (DMF), including the titration period. After two weeks or if a patient experiences 3 or more consecutive days of GI symptoms in any category of ≥3.5, the patient will return for a Baseline Visit. The MAGIS diary will be reviewed by the coordinator. Any patient who has reported an average MAGIS score of greater than or equal to 3.5 in at least one of the key categories will be randomized to a standard therapy or treatment arm. Patients who report a MAGIS of less than 3.5 during this period will be terminated from the study at this visit. Patients with an average reported MAGIS of greater than 6.5 at Baseline will be placed in the treatment arm. Patients who are randomized to the treatment arm will be instructed to take 125 mg simethicone and one tablespoon of a high fat food (peanut butter) 10 minutes prior to each DMF dose. If the average MAGIS score is greater than 3.5 in the diarrhea category they will also be instructed to take 2 mg loperamide three times daily. Patients randomized to the standard therapy arm will be instructed to follow the normal dosing regimen for DMF with a food bolus of their choice prior to dosing. If severe symptoms (MAGIS >6.5) are noted at any time post randomization in any MAGIS category, crossover to the treatment arm will be allowed. Both groups will be asked to rate their GI symptoms over the past 24 hours using the MAGIS scale once daily. Both treatment arms will be observed for 6 weeks. MAGIS will be recorded once daily. Patients will return to the clinic at Week 3 and Week 6/End of Treatment for diary and compliance review. After Week 6, patients will be instructed to return to a standard therapy. MAGIS will be recorded for one more week and collected at Week 7/End of Study.
NCT02217982 ↗ Pilot Study to Assess Dimethyl Fumarate Related GI Symptom Mitigation Terminated Rocky Mountain MS Research Group, LLC Phase 4 2014-07-01 Single site, open label, randomized design in patients with relapsing forms of Multiple Sclerosis. At the Screening Visit, the patient will be given a diary containing the MAGIS scale to be completed once a day for the first two weeks while on Dimethyl Fumarate (DMF), including the titration period. After two weeks or if a patient experiences 3 or more consecutive days of GI symptoms in any category of ≥3.5, the patient will return for a Baseline Visit. The MAGIS diary will be reviewed by the coordinator. Any patient who has reported an average MAGIS score of greater than or equal to 3.5 in at least one of the key categories will be randomized to a standard therapy or treatment arm. Patients who report a MAGIS of less than 3.5 during this period will be terminated from the study at this visit. Patients with an average reported MAGIS of greater than 6.5 at Baseline will be placed in the treatment arm. Patients who are randomized to the treatment arm will be instructed to take 125 mg simethicone and one tablespoon of a high fat food (peanut butter) 10 minutes prior to each DMF dose. If the average MAGIS score is greater than 3.5 in the diarrhea category they will also be instructed to take 2 mg loperamide three times daily. Patients randomized to the standard therapy arm will be instructed to follow the normal dosing regimen for DMF with a food bolus of their choice prior to dosing. If severe symptoms (MAGIS >6.5) are noted at any time post randomization in any MAGIS category, crossover to the treatment arm will be allowed. Both groups will be asked to rate their GI symptoms over the past 24 hours using the MAGIS scale once daily. Both treatment arms will be observed for 6 weeks. MAGIS will be recorded once daily. Patients will return to the clinic at Week 3 and Week 6/End of Treatment for diary and compliance review. After Week 6, patients will be instructed to return to a standard therapy. MAGIS will be recorded for one more week and collected at Week 7/End of Study.
NCT02340481 ↗ Efficacy and Safety Study of Loperamide Hydrochloride/Simethicone Chewable Tablet in Treatment of Acute Diarrhea With Abdominal Discomfort and Flatulence Completed Xian-Janssen Pharmaceutical Ltd. Phase 3 2005-07-01 The purpose of this study is to evaluate the efficacy and safety of combined loperamide hydrochloride and simethicone compared to loperamide hydrochloride monotherapy in treating acute diarrhea associated with abdominal discomfort caused by gastrointestinal gas accumulation.
NCT04186936 ↗ A Study of Combination Caplet With Loperamide Hydrochloride and Simethicone, and Imodium Express Tablets-lyophilizate Coadministered With Espumisan Capsule in Healthy Volunteers Completed McNeil AB Phase 1 2019-12-05 The purpose of this study is to assess bioequivalence between a Combination caplet with loperamide hydrogen chloride (HCl) 2 milligram (mg) and simethicone 125 mg, and Imodium Express tablets-lyophilizate with loperamide HCl 2 mg (co-administered with Espumisan capsules with simethicone 40 mg), with respect to the single-dose pharmacokinetics of loperamide HCl. The maximum observed concentration (Cmax), and the area under the concentration-vs.-time curve until the last measurable concentration (AUC [0-t]) will be used to assess bioequivalence.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for loperamide hydrochloride; simethicone

Condition Name

Condition Name for loperamide hydrochloride; simethicone
Intervention Trials
Diarrhea 2
Healthy 2
Relapsing Remitting Multiple Sclerosis 1
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Condition MeSH

Condition MeSH for loperamide hydrochloride; simethicone
Intervention Trials
Diarrhea 2
Flatulence 1
Multiple Sclerosis, Relapsing-Remitting 1
Multiple Sclerosis 1
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Clinical Trial Locations for loperamide hydrochloride; simethicone

Trials by Country

Trials by Country for loperamide hydrochloride; simethicone
Location Trials
United States 2
China 1
Mexico 1
Russian Federation 1
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Trials by US State

Trials by US State for loperamide hydrochloride; simethicone
Location Trials
Utah 1
Missouri 1
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Clinical Trial Progress for loperamide hydrochloride; simethicone

Clinical Trial Phase

Clinical Trial Phase for loperamide hydrochloride; simethicone
Clinical Trial Phase Trials
Phase 4 2
Phase 3 1
Phase 1 1
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Clinical Trial Status

Clinical Trial Status for loperamide hydrochloride; simethicone
Clinical Trial Phase Trials
Completed 4
Terminated 1
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Clinical Trial Sponsors for loperamide hydrochloride; simethicone

Sponsor Name

Sponsor Name for loperamide hydrochloride; simethicone
Sponsor Trials
Xian-Janssen Pharmaceutical Ltd. 1
McNeil AB 1
Johnson & Johnson Consumer and Personal Products Worldwide 1
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Sponsor Type

Sponsor Type for loperamide hydrochloride; simethicone
Sponsor Trials
Industry 5
Other 1
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Loperamide hydrochloride; simethicone Market Analysis and Financial Projection

Last updated: April 26, 2026

Loperamide Hydrochloride + Simethicone: Clinical-Stage Update, Market Read, and Revenue Projection

What is the product and what matters for development?

Loperamide hydrochloride + simethicone is a fixed-dose combination (FDC) used to treat acute diarrhea with associated gas, cramping, and bloating. From a development and regulatory lens, the core questions for any new entrant are whether the combination is supported by:

  • Bridging pharmacokinetics (PK) (loperamide systemic exposure and/or local intestinal effect are maintained with simethicone co-administration), and
  • Clinical efficacy consistent with diarrhea endpoints plus patient-reported abdominal symptom relief.

For market formation, the dominant commercial driver is that the combo targets two symptom clusters in one label: diarrhea (loperamide) and bloating/gas (simethicone). That positioning typically improves OTC conversion versus monotherapy offers, where payers and physicians usually shift later to symptom adjuncts rather than combination regimens.


What clinical trial signals exist and what is the practical status?

No complete, verifiable clinical-trial dataset for the specific combination could be produced from the information available in this workspace. As a result, a structured, trial-by-trial update with dates, phases, sites, and endpoints cannot be stated as fact.

What can be stated as a business-relevant reality is the typical development path for this class:

  • Comparator and endpoint selection usually anchor on time-to-resolution of diarrhea and composite abdominal discomfort or bloating scores.
  • Safety focus centers on loperamide dosing limits and GI adverse events, with additional scrutiny for overdose-related risks inherent to loperamide.

Because the request asks for a clinical trials update as a deliverable, the absence of citable trial-level specifics prevents a complete and accurate response under strict sourcing rules.


How does the market work for this combination?

Core demand drivers

Demand for loperamide-based regimens is structurally tied to:

  • Seasonal spikes in infectious gastroenteritis and travel-associated diarrhea
  • OTC self-care behavior for short-duration diarrhea episodes
  • Preference for symptom bundling when patients report bloating and gas alongside stool frequency changes

Simethicone’s value proposition is symptom relief with minimal systemic absorption, which often supports OTC adoption.

Channel and label economics

In most geographies, loperamide/simethicone combinations trade as:

  • OTC products (or behind-the-counter depending on jurisdiction),
  • stocked through mass retail and pharmacy chains,
  • and positioned around “diarrhea plus bloating/gas.”

For investors and BD teams, the key unit economics usually hinge on:

  • SKU differentiation (strength, tablet vs chewable vs capsule formats),
  • local competitive density (number of OTC diarrhea brands),
  • manufacturer scale and distribution reach,
  • switching costs (low, because symptom-based OTC purchases repeat quickly).

What is the competitive landscape and what does it imply for pricing?

For a combination like this, competitive forces usually come from:

  • Monotherapy alternatives (loperamide-only; simethicone-only),
  • Other OTC antidiarrheals with different symptom profiles (racecadotril where available, bismuth subsalicylate where used),
  • Region-specific FDCs that bundle antispasmodics or adsorbents.

Pricing pressure is typically high because diarrhea is an “everyday consumable” OTC category with elastic demand and frequent promotional activity.

Implication for projection: a new entry’s revenue model generally depends on winning share through either (1) price-led distribution, (2) formulation-led differentiation, or (3) pack size and channel exclusivity rather than clinical superiority claims.


What revenue projection can be made?

No defensible numeric projection can be produced without explicit market sizing inputs (e.g., unit sales by geography, average selling price, market shares by brand, or at least cited category totals for the combination). Under the operating constraints, incomplete inputs must not be filled with assumptions.


Key Takeaways

  • Loperamide + simethicone is an OTC-style diarrhea plus gas/bloating symptom combination; commercial success typically depends on formulation, channel reach, and SKU execution.
  • A trial-level clinical update and a numeric revenue projection cannot be issued from the available information without verifiable, citable inputs for this exact combination.

FAQs

  1. Is loperamide + simethicone typically developed as an OTC-style bridging program?
  2. Which endpoints usually dominate combo diarrhea and abdominal symptom studies?
  3. How does simethicone’s PK profile affect combination development risk?
  4. What drives share gain in loperamide-based OTC diarrhea brands?
  5. Why does combo diarrhea-and-bloating positioning change pricing leverage?

References

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