Last Updated: August 9, 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
Multiple Sclerosis 1
Flatulence 1
Multiple Sclerosis, Relapsing-Remitting 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
Mexico 1
Russian Federation 1
China 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
Johnson & Johnson Consumer and Personal Products Worldwide 1
Ranbaxy Laboratories Limited 1
Biogen 1
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Sponsor Type

Sponsor Type for loperamide hydrochloride; simethicone
Sponsor Trials
Industry 5
Other 1
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Last updated: July 25, 2026

Loperamide Hydrochloride and Simethicone Clinical Trials Update, Market Analysis and Forecast (2026–2036)

Executive summary: Loperamide hydrochloride plus simethicone is marketed for symptomatic relief of acute diarrhea with gas/bloating. Public clinical-trial and IP datasets are not consistently linkable at the fixed-combination level across major registries and national sources. No complete, citation-grade set of phase-by-phase clinical updates, FDA status items, and current branded/generic revenue by geography is provided in the available inputs, so a precise 2026–2036 market projection cannot be produced to business and litigation standards.

What clinical trials exist for loperamide hydrochloride plus simethicone?

Answer: A registry-by-registry, trial-by-trial update cannot be produced from the available information. Fixed-combination studies are often not uniquely indexed as “loperamide hydrochloride + simethicone,” or they are reported within broader diarrhea or antidiarrheal programs without a separable fixed-combination endpoint.

Phase breakdown: which trials are active, recruiting, completed?

  • Not provided in available inputs in a citation-grade, trial-ID-specific format.
  • Fixed-combination development timelines can be obscured by:
    • parallel monotherapy studies (loperamide alone, simethicone alone),
    • formulation or bioequivalence work replacing efficacy trials,
    • regional filings that do not map cleanly to global trial registries.

Endpoints typically used

When fixed-combination studies are published, typical diarrhea symptom endpoints include:

  • stool frequency reduction over defined windows,
  • severity scoring for bloating/gas (patient-reported or clinician scales),
  • time to symptom relief,
  • safety endpoints focused on GI adverse events and tolerability. No citation-backed endpoint mapping to specific loperamide/simethicone trials can be provided here.

What is the current regulatory status of loperamide hydrochloride and simethicone in the US?

Answer: A complete FDA status review (Orange Book listings, listed patents, exclusivity grants, and labeling-based indications) is not available in the provided inputs, so a definitive US status statement cannot be produced.

Orange Book status

  • Not provided (Orange Book patent and exclusivity data must be enumerated by NDA/ANDA and Orange Book product codes).

FDA reference/ANDA landscape

  • Not provided in a way that supports defensible market forecast assumptions.

What is the Orange Book status of loperamide hydrochloride + simethicone products?

Answer: Not determinable from available inputs.

Which patents typically cover fixed combinations?

For fixed-dose GI symptom products, patent coverage often includes:

  • formulation/polymorph or stabilized composition claims,
  • manufacturing process claims,
  • method-of-use claims tied to symptom relief combinations. No listed patent numbers or claim scopes are provided here.

When does loperamide hydrochloride + simethicone lose exclusivity?

Answer: Exclusivity timelines cannot be calculated without:

  • product-level FDA reference/approval dates,
  • listed exclusivity start/end dates,
  • relevant patent term-adjustment and expiration dates. No such data is provided.

How many patents protect loperamide plus simethicone, and what is their strength?

Answer: Not answerable from available inputs.

How strength is usually measured for combination OTC-like products

Business teams typically score:

  • remaining claim life,
  • geographic coverage,
  • enforcement posture,
  • likelihood of generic or 505(b)(2) workarounds (formulation or process),
  • whether Orange Book-listed patents are controlling for the exact formulation. Those inputs are missing.

What formulations are protected by loperamide + simethicone?

Answer: Not determinable.

Dosage forms that commonly appear in this category

  • tablets, chewables, capsules, and liquid suspensions are common in antidiarrheal/anti-gas categories. No product-specific formulation IP is enumerated here.

Which companies market loperamide hydrochloride plus simethicone, and what is their share?

Answer: Company-level market-share quantification cannot be produced from available inputs.

Commercial packaging and channel factors

Market outcomes depend on:

  • OTC vs Rx positioning,
  • country-specific diarrhea seasonality,
  • distribution through retail chains vs hospitals/clinics. No company, SKU, or channel data is provided.

Clinical trial update: are there new phase 2/phase 3 results for this fixed combination?

Answer: Not producible from available inputs.

If new trials exist, what to look for in filings

For a business update, teams track:

  • trial identifiers (NCT/ISRCTN/Chinese Clinical Trial Registry),
  • sponsor and sites,
  • statistical analysis plan,
  • symptom relief time curves,
  • discontinuation rates by arm. No such trial record set is available.

Market analysis: what is the size of the loperamide + simethicone segment?

Answer: Not computable with citation-grade support from available inputs.

What “segment” assumptions change the forecast

Two segmentation approaches drive different totals:

  1. fixed-combination only (loperamide + simethicone in one product),
  2. broader antidiarrheal plus anti-gas symptom relief (includes separate products taken together). No segmentation source data is provided.

Market projection: what is the forecast for loperamide hydrochloride plus simethicone through 2036?

Answer: A defensible forecast cannot be produced without:

  • baseline market size (units and value),
  • growth drivers (OTC share, travel-related diarrhea, guideline adoption),
  • price erosion parameters (generic entry and intensity),
  • country-level regulatory changes,
  • competitive switching behavior. None of those baseline datasets appear in the available inputs.

What generic entry risks exist for loperamide hydrochloride + simethicone?

Answer: A risk assessment cannot be produced without:

  • patent/EX listing map to exact formulation,
  • ANDA 505(b)(2) activity, paragraph IV filings, or litigation records tied to the fixed combination. No such data is available.

Does loperamide plus simethicone compete with other antidiarrheal and anti-gas therapies?

Answer: Competitive positioning can be described conceptually, but no market share or competitive scenario analysis can be built without market and SKU inputs.

Common competitive sets

  • antidiarrheals: loperamide monotherapy, racecadotril (where approved), bismuth subsalicylate (where marketed),
  • anti-gas: simethicone monotherapy, combination GI antacids/antispasmodics in some markets,
  • combination symptom relief: fixed products varying by regulatory jurisdiction. No evidence-backed relative performance inputs are provided.

How does the fixed combination compare with taking loperamide and simethicone separately?

Answer: Clinical and commercial tradeoffs depend on:

  • formulation convenience,
  • adherence and symptom-time alignment,
  • price-per-course. No pricing, adherence, or trial comparator data is available in the inputs.

What patent litigation affects loperamide hydrochloride + simethicone?

Answer: Not answerable from available inputs.

What to track in litigation

For this category, teams monitor:

  • ANDA litigation under Hatch-Waxman (paragraph IV),
  • settlement-triggered earlier launches,
  • injunction/CBM outcomes when relevant. No litigation docket data is provided.

What settlements and licensing deals have shaped market timing?

Answer: Not producible without deal-level inputs.

Regulatory and labeling: what indications and contraindications drive demand?

Answer: Indication demand drivers are typically:

  • acute diarrhea symptom relief,
  • bloating/gas symptom relief,
  • pediatric restrictions and warnings,
  • dehydration risk warnings that can limit use. No jurisdiction-specific labeling text or regulatory status is provided.

Key Takeaways

  • A citation-grade clinical trials update for loperamide hydrochloride plus simethicone and a forecastable market model cannot be completed with the available inputs.
  • A US-focused FDA/Orange Book exclusivity and patent-term timeline is not derivable without product-level FDA listings.
  • A business-grade 2026–2036 projection requires baseline market size, competitive entry/price erosion assumptions, and region-level demand data, none of which is provided in the available inputs.

FAQs

  1. Are there bioequivalence studies specifically for loperamide hydrochloride plus simethicone fixed-dose products?
  2. How do OTC availability and pediatric labeling restrictions affect sales of loperamide plus simethicone?
  3. Do manufacturers use 505(b)(2) or ANDA pathways to replicate fixed-combination GI symptom products?
  4. What endpoints are most common in clinical trials for acute diarrhea with bloating/gas symptoms?
  5. What generic launch timing factors most often determine market share loss in antidiarrheal combinations?

References

  1. (No cited sources available from the provided inputs.)

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