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Gamma- Glutamylcysteine

Phase 1

Mild Cognitive Impairment (MCI) | Small molecule | Neurology |Viatris Inc.|Last Updated: May 13, 2026

Success Probability

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Market & Valuation

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Trial Design

CONTROLLEDDMC
Total Trials1
Total Enrollment9

FDA Designations

No designations recorded

Clinical trial landscape

Gamma- Glutamylcysteine · 1 trial · 1 indication

Phase 1 1
NCT07583251Safety And Tolerability Of Gamma Glutamylcysteine (GGC) Oral Supplementation In MCI PatientsMild Cognitive Impairment (MCI)
NOT YET_RECRUITING9 Analytics
PHASE1NOT YET_RECRUITING
Safety And Tolerability Of Gamma Glutamylcysteine (GGC) Oral Supplementation In MCI Patients
Mild Cognitive Impairment (MCI)Unlock trial analytics

Study Endpoints

Primary Endpoints

No. of participants with abnormal kidney and liver function tests after 30 days of supplementation.
1 month

Safety: Creatinine not more than 1.5mg/dL, AST and ALT levels not more than 1.5 X ULN.

Number of participants with treatment-related adverse events with one dose of GGC as assessed by CTCAE.
3 months

Safety and Tolerability

Number of participants with treatment-related adverse events with two doses of GGC as assessed by CTCAE.
3 months

Safety and tolerability

Number of participants with treatment-related adverse events with three doses of GGC as assessed by CTCAE.
3 months

Safety and tolerabitily

Number of participants with abnormal laboratory test results after 3 months of GGC supplementation.
3 months

Safety and tolerability: The number of participants experiencing clinically significant abnormal laboratory test results (hematology, kidney, and liver function tests) during 3 months of GGC supplementation, compared with baseline.

Secondary Endpoints

Changes in baseline blood glutathione levels (µmol/l) in people with MCI due to GGC supplementation.
3.5 months
Changes in blood iron levels(ng/μl) in people with MCI due to GGC supplementation.
3.5 months
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Gamma - Glutamylcystiene 400EXPERIMENTALEach participant will receive gamma-glutamyl cysteine (GGC) capsules orally 400mg once a day for 3 months.
Gamma - Glutamylcystiene 800EXPERIMENTALEach participant will receive gamma-glutamyl cysteine (GGC) capsules orally 400mg two times(morning-evening) a day for 3 months
Gamma - Glutamylcystiene 1200EXPERIMENTALEach participant will receive gamma-glutamyl cysteine (GGC) capsules orally 400mg three times (morning-afternoon - evening) a day for 3 months

Interventions

NameTypeDescription
Gamma- GlutamylcysteineDRUG400mg capsules once a day
Gamma- GlutamylcusteineDRUG400mg capsules orally (three times) per day
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Eligibility Criteria

Age Range55 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Memory complaints; 2. MCI diagnosis 3. MoCA score between 18-25 4. Age 55 - 80 years old. 5. Ability to read and write in English Exclusion Criteria: 1. Subjects with acute head trauma or head injury involving loss of consciousness; 2. Subjects with a history of cancer; 3. ...

Countries:United States
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Frequently asked questions about Gamma- Glutamylcysteine

What is Gamma-Glutamylcysteine used for?

Gamma-Glutamylcysteine is an investigational small molecule being developed for the treatment of Mild Cognitive Impairment (MCI), a neurological condition. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities.

Who makes Gamma-Glutamylcysteine?

Gamma-Glutamylcysteine is being developed by Viatris Inc. (NASDAQ: VTRS). The company is conducting clinical trials to evaluate the safety and tolerability of this investigational drug in patients with Mild Cognitive Impairment.

What phase is Gamma-Glutamylcysteine in?

Gamma-Glutamylcysteine is in Phase 1 clinical development. It is an investigational drug and has not been approved for any use. The ongoing Phase 1 trial is designed to assess its safety and tolerability in patients with Mild Cognitive Impairment.

What clinical trials is Gamma-Glutamylcysteine in?

Gamma-Glutamylcysteine is being studied in one clinical trial, NCT07583251, titled 'Safety And Tolerability Of Gamma Glutamylcysteine (GGC) Oral Supplementation In MCI Patients'. This Phase 1 trial is not yet recruiting and plans to enroll 9 participants in the United States.

Is Gamma-Glutamylcysteine FDA approved?

No, Gamma-Glutamylcysteine is not FDA approved. It is an investigational drug currently in Phase 1 clinical trials for Mild Cognitive Impairment. The drug has not completed clinical development or received marketing authorization from regulatory agencies.