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Crofelemer

Phase 4FDA approved

Cancer Therapy-Related Diarrhea | Small molecule | Oncology |Jaguar Health, Inc.|Trials Updated: Jun 9, 2026

Crofelemer development status

FDA approval on record Dec 31, 2012 as Mytesi
Approval holderNapo Pharms Inc
ApplicationNDA202292
Highest phase Phase 4 (NCT03898856)
Phase scored for JAGXPhase 3
Registered trials 6 across 4 sponsors since Jan 2005

Label indication MYTESI is indicated for symptomatic relief of non-infectious diarrhea in adult patients with HIV/AIDS on anti-retroviral therapy. MYTESI is an anti-diarrheal indicated for the symptomatic relief of non-infectious diarrhea in adult patients with HIV/AIDS on anti-retroviral therapy. ( 1 ) FDA label

Crofelemer target and mechanism

Molecular targetANO1, CFTR
Target classBlocker
ModalitySmall molecule

Also known as Crofelemer Powder for Oral Solution, Crofelemer Oral Product, Crofelemer Product

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials5
Total Enrollment370

FDA Designations

No designations recorded

Crofelemer clinical trials

Crofelemer · 5 trials · 15 indications

Phase 3 1Phase 2 3Early Phase 1 1
NCT04538625Prophylaxis of Diarrhea in Adult Cancer Patients Receiving Targeted Cancer TherapyCancer Therapy-Related Diarrhea
COMPLETED287 Analytics
PHASE3COMPLETED
Prophylaxis of Diarrhea in Adult Cancer Patients Receiving Targeted Cancer Therapy
Cancer Therapy-Related DiarrheaUnlock trial analytics

Study Endpoints

Primary Endpoints

Frequency of Number of Loose/watery Stools
For the entire 12-week double-blind placebo-controlled treatment period (The Stage 1 Primary Treatment Phase).

The frequency of diarrhea as measured by the average number of loose/watery stools per week will be evaluated as a continuous endpoint.

Diarrhea for >= 2 Consecutive Days
Cycle 1, Cycle 2 (each cycle is 21 days)

Percentage of participants with any grade (based on CTCAE 4.0) diarrhea lasting 2 or more consecutive days during cycles 1 and 2 of chemotherapy.

Safety and Tolerability
24 weeks

Frequency of Treatment-Emergent-Adverse Events

Preliminary Efficacy
24 weeks

Change in weekly volume of parenteral support (PS: parenteral nutrition (PN) with or without intravenous (IV) fluid volume) from baseline, by recording PS volume in the patient daily diary

Changes in Physical Examination
32 Weeks

Changes from baseline in physical exam and signs of dehydration, such as decreased urine output, sunken eyes, lethargy and abnormal skin turgor.

Changes in Laboratory Values
32 Weeks

Incidence in changes from baseline of individual lab values within a chemistry, hematology and metabolic panel analysis.

Ostomy output reduction
12 weeks

Change in ostomy output from baseline over the entire 12-week treatment period as average weekly ostomy output at week 12.

Secondary Endpoints

Proportion of Durable, Clinical Responders
Initial 12-week (Stage 1) period of the study.
Maximum Number of Weekly Loose/Watery Stools
Initial 12-week (Stage 1) period of the study.
Fecal Incontinence
Initial 12-week (Stage 1) period of the study.
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATORSubjects randomized to the placebo arm, will receive oral doses of matching placebo tablets twice daily with or without food.
CrofelemerEXPERIMENTALSubjects randomized to the crofelemer arm, will receive oral doses of crofelemer 125mg delayed-release tablets twice daily with or without food.
ControlNO_INTERVENTIONPatients on the control arm will be on the study for cycles 1-3 of THP or TCHP. Patients on the control arm will not receive crofelemer at any time on this study.
Crofelemer 3 mg/kg/dose three times daily (TID)EXPERIMENTALParticipants randomized to the Crofelemer 3 mg/kg/dose arm will receive Crofelemer 3 mg/kg/dose by oral route three times per day (TID) morning, midday, and evening for 24 weeks.
Crofelemer 10 mg/kg/dose three times daily (TID)EXPERIMENTALParticipants randomized to the Crofelemer 10 mg/kg/dose arm will receive Crofelemer 10 mg/kg/dose by oral route three times per day (TID) morning, midday, and evening for 24 weeks.
Matched Placebo three times per day (TID)PLACEBO_COMPARATORParticipants randomized to the matched placebo arm will receive matched placebo by oral route three times per day (TID) morning, midday, and evening for 24 weeks.
Dose Level 1/Treatment Period 1: 1mg/kg/dose 3x/dayEXPERIMENTALParticipants may be randomized to crofelemer powder for oral solution during Treatment Period 1 (1 month duration)
Dose Level 1/Treatment Period 1: Placebo 3x/dayPLACEBO_COMPARATORParticipants may be randomized to the placebo comparator during Treatment Period 1 (1 month duration)
Dose Level 1/Treatment Period 2: 1mg/kg/dose 3x/dayEXPERIMENTALParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Dose Level 2/Treatment Period 1: 3mg/kg/dose 3x/dayEXPERIMENTALParticipants will crossover to either crofelemer powder for oral solution or placebo comparator or continue on crofelemer powder for oral solution or the placebo comparator that they were previously on during Dose Level 1 (1 month duration)
Dose Level 2/Treatment Period 1: Placebo 3x/dayPLACEBO_COMPARATORParticipants will crossover to either crofelemer powder for oral solution or placebo comparator or continue on crofelemer powder for oral solution or the placebo comparator that they were previously on during Dose Level 1 (1 month duration)
Dose Level 2/Treatment Period 2: 3mg/kg/dose 3x/dayEXPERIMENTALParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Dose Level 2/Treatment Period 2: Placebo 3x/dayPLACEBO_COMPARATORParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Dose Level 3/Treatment Period 1: 10mg/kg/dose 3x/dayEXPERIMENTALParticipants will crossover to either crofelemer powder for oral solution or placebo comparator or continue on crofelemer powder for oral solution or the placebo comparator that they were previously on during Dose Level 2 (1 month duration)
Dose Level 3/Treatment Period 1: Placebo 3x/dayPLACEBO_COMPARATORParticipants will crossover to either crofelemer powder for oral solution or placebo comparator or continue on crofelemer powder for oral solutionor the placebo comparator that they were previously on during Dose Level 2 (1 month duration)
Dose Level 3/Treatment Period 2: 10mg/kg/dose 3x/dayEXPERIMENTALParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Dose Level 3/Treatment Period 2: Placebo 3x/dayPLACEBO_COMPARATORParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Dose Level 1/Treatment Period 2: Placebo 3x/dayPLACEBO_COMPARATORParticipants will crossover to either crofelemer powder for oral solution or placebo comparator
Crofelemer GroupEXPERIMENTAL -

Interventions

NameTypeDescription
Crofelemer 125 MG [Mytesi]DRUGRandomized, Double-blind, Placebo-controlled, two arm trial
PlaceboDRUGMatching placebo tablets
CrofelemerDRUGCrofelemer 125 mg BID during cycles 1-2 of THP or TCHP
Crofelemer Powder for Oral SolutionDRUGCrofelemer Powder for Oral Solution
Matched Placebo Powder for Oral SolutionDRUGMatched Placebo Powder for Oral Solution
Placebo Powder for Oral SolutionDRUGMatching Placebo Powder for Oral Solution
Crofelemer Oral ProductDRUGCrofelemer powder for solution (50g and 100g) or Crofelemer Powder for Oral Solution (100 mg/mL or 30 mg/mL vials for reconstitution and oral dosing)
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites52

Inclusion Criteria: * 1\. Patients to receive targeted cancer therapy drugs that have a reported an all grade diarrhea incidence of 50% or higher (e.g., tyrosine kinase inhibitors, cdk inhibitors, anti-EGFR, etc., for treatment of solid tumors. 2\. Patients able to provide written informed conse...

Countries:United StatesArgentinaGeorgiaSerbiaTaiwanGermanyItalyUnited Arab Emirates
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Recent Changes (Last 90 Days)

MEDIUMAug 1, 2026NCT06904872primaryCompletionDate: changed
HIGHAug 1, 2026NCT06721871Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMAug 1, 2026NCT06904872primaryCompletionDate: changed
HIGHAug 1, 2026NCT06721871Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMAug 1, 2026NCT06904872primaryCompletionDate: changed
HIGHAug 1, 2026NCT06721871Status: RECRUITING → ACTIVE_NOT_RECRUITING

Frequently asked questions about Crofelemer

What is Crofelemer used for?

Crofelemer is being studied for several conditions, including cancer therapy-related diarrhea, short bowel syndrome, microvillus inclusion disease, and breast cancer. It is an investigational small molecule developed by Jaguar Health, Inc. (JAGX).

What does Crofelemer target?

Crofelemer targets ANO1 and CFTR. It acts as a blocker of these targets, which are involved in chloride secretion and fluid regulation in the gastrointestinal tract.

Who is developing Crofelemer?

Crofelemer is being developed by Jaguar Health, Inc., which trades under the ticker symbol JAGX.

What phase is Crofelemer in?

Crofelemer is in Phase 2 clinical development. It is an investigational drug and has not been approved by the FDA for the indications currently being studied.

What clinical trials is Crofelemer in?

Crofelemer is being evaluated in several clinical trials, including NCT06904872 for short bowel syndrome, NCT06721871 for pediatric microvillus inclusion disease, NCT06326645 for short bowel syndrome, and NCT04538625 for cancer therapy-related diarrhea.

Is Crofelemer the same as Crofelemer Powder for Oral Solution?

Yes, Crofelemer is also known as Crofelemer Powder for Oral Solution, Crofelemer for, Crofelemer 125 MG [Mytesi], Crofelemer Oral Product, and Crofelemer Product. These names refer to the same active ingredient.