ClinicalTrials.gg
CompletedNCT06834490MEMOUpdated Oct 6, 2025Results posted

Safety and Efficacy of Sequential Therapy With Mexidol® in Patients With Chronic Cerebral Ischemia

A Phase 3 interventional study of Mexidol and Placebo in Chronic Cerebral Ischemia, sponsored by Pharmasoft. Completed at 14 sites in 2 countries. Open to participants aged 40 Years to 90 Years. Per ClinicalTrials.gov, last updated 2025-10-06.

Sponsored by Pharmasoft · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Registered 5 years 3 months after the study started (first participant enrolled Nov 2019, registered Feb 2025).
Phase
Phase 3
Study type
Interventional
Enrollment
318
Allocation
Randomized
Ages
40 Years to 90 Years
Sex
All
01

Study summary

The purpose of this study is to evaluate safety and efficacy of sequential treatment with Mexidol® in patients with chronic cerebral ischemia (CCI).

Read the detailed description

Chronic cerebral ischemia (CCI) is a cerebral vascular pathology caused by slow progressive diffuse disruption of blood flow to the brain with gradually increasing defects in its functioning. The activation of lipid peroxidation with the release of large amounts of active oxygen radicals plays the key role in the pathogenesis of ischemic disorders, which leads to the development of oxidative stress. However, traditional drug therapy, which is aimed at improving blood flow to the brain, is mainly based on drugs with psychostimulant component, and does not always prevent the increase of oxidative damage to the patients' body. That is why it is necessary to search for drugs that would correct these processes selectively. Mexidol contains ethylmethylhydroxypyridine succinate as an active substance and may be the drug of choice for the treatment of CCI patients.

02

Conditions studied

  • Chronic Cerebral Ischemia

Keywords

  • Chronic Cerebral Ischemia
  • CCI
  • Ischemia
  • Cerebral
  • Brain
  • Stroke
  • Cognitive
  • Neurobehavioral Manifestations
  • Neuroprotection
  • Mexidol
  • Ethylmethylhydroxypyridine Succinate
  • Cerebrovascular Disorders
  • Antioxidant Therapy
  • Stroke Recovery
  • Central Nervous System Disorders
  • Chronic Brain Hypoxia
  • Post-stroke Cognitive Impairment
  • Cognitive Impairment
  • Neurodegenerative
  • Neurodegenerative Processes
  • Neurological Rehabilitation
  • Oxidative Stress
  • Oxidative Stress Reduction
  • Energy Metabolism Enhancement
  • Central Nervous System
  • Cerebral Hypoxia
03

In context

Ischemia

545 studies on the registry are indexed under Ischemia; 72 are open to participants now.

This study's enrollment of 318 is above the median of 74 across 356 interventional studies indexed under Ischemia.

Browse Ischemia studies →

Lead sponsor

Pharmasoft is the lead sponsor of 9 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
40 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Patients of either sex aged from 40 to 90 years inclusive
  2. scale score of 25 and lower
  3. Patients meeting the criteria for the diagnosis: Mild (moderate) cognitive impairment when assessed by .
  4. Chronic Cerebral Ischemia (ICD-10 code 167.8)
  5. Foci of leukoaraiosis or "silent" brain infarction documented by MRI/CT performed within the past 12 months.
  6. Patients who signed an to the study participation
  7. History of progressive multifocal or diffuse brain disease from 1 to 5 years
  8. Patients receiving background therapy with a fixed dose and combination of drugs during the previous month, including (if indicated): antiplatelet therapy, therapy of cerebral atherosclerosis and arterial hypertension, ischemic heart disease or other chronic diseases.
  9. Negative pregnancy test
  10. Patients who have agreed to use a reliable method of during the study participation until completion (for women of , including partners of study participants).
  11. Patients who are able to understand all study requirements and who have consented to all the limitations imposed by the study

Exclusion criteria

Exclusion Criteria:

  1. Inclusion by mistake (overlooked inclusion or non-inclusion criteria)
  2. Investigator's or Sponsor's decision to exclude a participant from the study due to a protocol deviation/violation.
  3. Serious adverse events or adverse events that do not meet the criteria for seriousness but may, in the investigator's opinion, be detrimental to the health or well-being of a participant if they continue participation in the study.
  4. Any adverse event (which may be unrelated to the drug) requiring observations, procedures, and/or medications not approved by the clinical trial protocol.
  5. Participant's refusal to continue participation in the study or their lack of discipline
  6. Allergic reaction to the investigational drug that requires cancelling the treatment
  7. Participant's desire to terminate their participation early for any reason.
  8. Loss of contact with the patient followed by failure to attend the visit.
  9. The need to take therapies prohibited by this protocol: nootropic drugs, ethylmethylhydroxypyridine succinate, trimetazidine or meldonium, drugs affecting the function of the autonomic nervous system and other drugs that may, in the investigator's opinion, distort the study results.
  10. Pregnancy.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

MMSE and MoCA

Short tests of memory and thinking, each scored out of 30. Lower scores suggest more difficulty; criteria give a range, either to include people with memory problems or to leave them out.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
318 participants (actual)

Study arms

  • Active comparator
    Main (Mexidol)

    Participants received Mexidol IV 500 mg (10 ml) once daily for 14 days, then Mexidol FORTE 250 orally 250 mg 1 tablet 3 times a day for 60 days

    Drug: Mexidol

  • Placebo comparator
    Control (Placebo)

    Participants received Mexidol Placebo matching Mexidol IV 500 mg (10 ml) once daily for 14 days, then Mexidol Placebo matching Mexidol FORTE 250 orally 250 mg 1 tablet 3 times a day for 60 days

    Drug: Placebo

Interventions

  • 50 mg/ml IV solution, 250 mg tablets

    Also known as: Ethylmethylhydroxypyridine Succinate

  • DrugPlacebo

    Placebo IV solution, Placebo tablets

06

What researchers measure

Primary outcomes

  1. Mean Score of Montreal Cognitive Assessment (MoCA) at Visit 5 in Comparison With Reference Score at Visit 0

    The Montreal Cognitive Assessment (MoCA) is used to measure the degree of cognitive impairment in patients with CCI. MoCA scores range between 0 and 30. A score of 26 or over is considered to be normal. Higher score than shown at Visit 0 is expected after treatment.

    Time frame: Day 75+2 (Visit 5) compared with the baseline level (Visit 0, 7 days before treatment)

Secondary outcomes

  1. Changes in the Severity of Cognitive Impairment Assessed With the Montreal Cognitive Assessment Scale Between Visit 0 and Visits 2 and 4

    The Montreal Cognitive Assessment (MoCA) is used to measure the changes in the severity of cognitive impairment at Visits 2 and 4 in comparison to Visit 0. MoCA scores range between 0 and 30. A score of 26 or over is considered to be normal. Higher score than shown at Visit 0 is expected.

    Time frame: Day 14 (Visit 2) and Day 44±2 (Visit 4) compared with the baseline level (Visit 0, 7 days before treatment)

  2. Changes in Patients' Quality of Life Assessed With SF-36 Questionnaire (Physical Health)

    The SF-36 questionnaire is used between Visit 1 and Visits 2, 4, 5. The SF-36 questionnaire consists of eight scales yielding two summary measures: physical and mental health. To score the SF-36, scales are standardized with a scoring algorithm or by the SF-36v2 scoring software to obtain a score ranging from 0 to 100. Higher scores indicate better health status, and a mean score of 50 has been articulated as a normative value for all scales.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  3. Changes in Patients' Quality of Life Assessed With SF-36 Questionnaire (Mental Health)

    The SF-36 questionnaire is used between Visit 1 and Visits 2, 4, 5. The SF-36 questionnaire consists of eight scales yielding two summary measures: physical and mental health. To score the SF-36, scales are standardized with a scoring algorithm or by the SF-36v2 scoring software to obtain a score ranging from 0 to 100. Higher scores indicate better health status, and a mean score of 50 has been articulated as a normative value for all scales.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  4. Changes in the Severity of Asthenia Assessed With the Multidimensional Fatigue Inventory (MFI-20)

    The Multidimensional Fatigue Inventory (MFI-20) is used between Visit 1 and Visits 2, 4, 5. MFI-20 is a 20-item self-administered questionnaire designed to measure fatigue in five four-item subscales: General fatigue, Physical fatigue, Reduced activity, Reduced motivation and Mental fatigue. MFI-20 has an even proportion of positively and negatively worded items that are rated on a 5-point Likert scale. Subscale scores (range 4-20) are calculated as the sum of item ratings and a total fatigue score (range 20-100) is calculated as the sum of subscale scores. Higher scores indicate a higher level of fatigue.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  5. Changes in the Anxiety Level According to the Beck Anxiety Inventory

    The Beck Anxiety Inventory (BAI) consists of 21 self-reported items (four-point scale) used to assess the intensity of physical and cognitive anxiety symptoms during the past week. Scores may range from 0 to 63: minimal anxiety levels (0-7), mild anxiety (8-15), moderate anxiety (16-25), and severe anxiety (26-63).

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  6. Autonomic Changes According to the A.M.Wein's Questionnaire

    The A.M.Wein's questionnaire is used between Visit 1 and Visit 2, 4, 5. It includes 11 main signs of autonomic disorders. Each autonomic symptom is assessed using scores from 7 to 3, then the scores are summed. Scores may range from 0 to 60, higher scores mean a worse outcome. The total sum of the scores in healthy individuals should be 0-14 scores. 15-29 scores are indicative of moderate vegetative dystonia syndrome, 30 and more scores are indicative of severe vegetative dystonia syndrome.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  7. Changes in Cognitive Impairment Assessed With Digit Symbol Substitution Test

    The Digit Symbol Substitution Test is used between Visit 1 and Visits 2, 4, 5. The DSST is used to measure attention, processing speed and executive function. It is a pencil and paper test of psychomotor performance in which the subject is given a key grid of numbers and matching symbols and a test section with numbers and empty boxes. The test consists of filling as many empty boxes as possible with a symbol matching each number. The score is the number of correct number-symbol matches achieved in 90 s. Scores range from 0 to 100, with higher scores indicating higher cognitive function.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  8. Motor Changes Assessed With the Tinetti Test

    The Tinetti test is used between Visit 1 and Visits 2, 4, 5. The Tinetti test is a clinical test for the assessment of balance and gait. It has a gait score and a balance score using a 3-point ordinal scale of 0, 1 and 2. Gait is scored over 12 and balance is scored over 16 totalling 28. The lower the score on the Tinetti test, the higher the risk of falling. Tinetti test score equal or less than 18 shows high risk of fall, 19-23 scores show moderate risk of fall, and score equal or higher than 24 shows low risk of fall. Thus, min value is 0, max value is 28, higher scores mean a better outcome.

    Time frame: Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)

  9. Change in Global Illness Severity Assessed With the Clinical Global Impressions Scale at Visit 5 Compared to Baseline Measure

    The Clinical Global Impressions Scale is a standardized assessment tool used to rate the severity of illness, change over time, and efficacy of medication. The interpretation of scores is as follows: 00 - Not assessed 01 - Vast improvement. Side effects - None. 03 - Vast improvement. Side effects - Significantly interfere with patient's therapeutic patient's functioning 04 - Vast improvement. Side effects - outweights therapeutic effect 05 - Decided improvement. Side effects - none 09 - Slight improvement. Side effects - none 10 - Slight improvement. Side effects - do not significantly interfere with patient's functioning 13 - Slight improvement. Side effects - none

    Time frame: Day 75+2 (Visit 5)

07

Results

Posted Oct 6, 2025

Participant flow

Participants were recruited based on protocol requirements at 15 clinical sites between November 2019 and December 2020. The first participant was enrolled on 05 November, 2019 and the last participant was enrolled on 14 September, 2020.

Participant flow — Overall Study
MilestoneMain (Mexidol)Control (Placebo)
Started159159
Completed157155
Not completed24

Outcome measures

PrimaryMean Score of Montreal Cognitive Assessment (MoCA) at Visit 5 in Comparison With Reference Score at Visit 0

The Montreal Cognitive Assessment (MoCA) is used to measure the degree of cognitive impairment in patients with CCI. MoCA scores range between 0 and 30. A score of 26 or over is considered to be normal. Higher score than shown at Visit 0 is expected after treatment.

Time frame:
Day 75+2 (Visit 5) compared with the baseline level (Visit 0, 7 days before treatment)
Reported as:
Mean · score on a scale
Mean Score of Montreal Cognitive Assessment (MoCA) at Visit 5 in Comparison With Reference Score at Visit 0
score on a scaleMain (Mexidol)Control (Placebo)
MoCA Scores at Visit 525.72 ± 2.4723.95 ± 2.58
Difference in comparison with Visit 04.22 ± 2.592.17 ± 2.20
SecondaryChanges in the Severity of Cognitive Impairment Assessed With the Montreal Cognitive Assessment Scale Between Visit 0 and Visits 2 and 4

The Montreal Cognitive Assessment (MoCA) is used to measure the changes in the severity of cognitive impairment at Visits 2 and 4 in comparison to Visit 0. MoCA scores range between 0 and 30. A score of 26 or over is considered to be normal. Higher score than shown at Visit 0 is expected.

Time frame:
Day 14 (Visit 2) and Day 44±2 (Visit 4) compared with the baseline level (Visit 0, 7 days before treatment)
Reported as:
Mean · score on a scale
Changes in the Severity of Cognitive Impairment Assessed With the Montreal Cognitive Assessment Scale Between Visit 0 and Visits 2 and 4
score on a scaleMain (Mexidol)Control (Placebo)
MoCA scores at Visit 223.82 ± 2.2823.10 ± 2.17
Difference at Visit 2 in comparison to Visit 02.30 ± 1.961.31 ± 1.64
MoCA scores at Visit 425.06 ± 2.3723.75 ± 2.34
Difference at Visit 4 in comparison to Visit 03.54 ± 2.361.98 ± 2.00
SecondaryChanges in Patients' Quality of Life Assessed With SF-36 Questionnaire (Physical Health)

The SF-36 questionnaire is used between Visit 1 and Visits 2, 4, 5. The SF-36 questionnaire consists of eight scales yielding two summary measures: physical and mental health. To score the SF-36, scales are standardized with a scoring algorithm or by the SF-36v2 scoring software to obtain a score ranging from 0 to 100. Higher scores indicate better health status, and a mean score of 50 has been articulated as a normative value for all scales.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Changes in Patients' Quality of Life Assessed With SF-36 Questionnaire (Physical Health)
score on a scaleMain (Mexidol)Control (Placebo)
SF-36: physical health (Visit 2)44.81 ± 8.2844.94 ± 7.83
Difference at Visit 2 in comparison with Visit 10.60 ± 5.290.79 ± 4.53
SF-36: physical health (Visit 4)46.52 ± 7.9046.07 ± 7.78
Difference at Visit 4 in comparison with Visit 12.35 ± 6.072.03 ± 5.60
SF-36: physical health (Visit 5)47.31 ± 7.9646.27 ± 7.77
Difference at Visit 5 in comparison with Visit 13.08 ± 6.702.23 ± 5.79
SecondaryChanges in Patients' Quality of Life Assessed With SF-36 Questionnaire (Mental Health)

The SF-36 questionnaire is used between Visit 1 and Visits 2, 4, 5. The SF-36 questionnaire consists of eight scales yielding two summary measures: physical and mental health. To score the SF-36, scales are standardized with a scoring algorithm or by the SF-36v2 scoring software to obtain a score ranging from 0 to 100. Higher scores indicate better health status, and a mean score of 50 has been articulated as a normative value for all scales.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Changes in Patients' Quality of Life Assessed With SF-36 Questionnaire (Mental Health)
score on a scaleMain (Mexidol)Control (Placebo)
SF-36: mental health (Visit 2)46.64 ± 8.9146.40 ± 9.16
Difference at Visit 2 in comparison with Visit 12.52 ± 6.751.49 ± 4.70
SF-36: mental health (Visit 4)48.46 ± 8.7447.38 ± 9.14
Difference at Visit 4 in comparison with Visit 14.30 ± 7.852.45 ± 6.46
SF-36: mental health (Visit 5)50.51 ± 7.9648.40 ± 8.77
Difference at Visit 5 in comparison with Visit 16.36 ± 8.143.46 ± 8.05
SecondaryChanges in the Severity of Asthenia Assessed With the Multidimensional Fatigue Inventory (MFI-20)

The Multidimensional Fatigue Inventory (MFI-20) is used between Visit 1 and Visits 2, 4, 5. MFI-20 is a 20-item self-administered questionnaire designed to measure fatigue in five four-item subscales: General fatigue, Physical fatigue, Reduced activity, Reduced motivation and Mental fatigue. MFI-20 has an even proportion of positively and negatively worded items that are rated on a 5-point Likert scale. Subscale scores (range 4-20) are calculated as the sum of item ratings and a total fatigue score (range 20-100) is calculated as the sum of subscale scores. Higher scores indicate a higher level of fatigue.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Changes in the Severity of Asthenia Assessed With the Multidimensional Fatigue Inventory (MFI-20)
score on a scaleMain (Mexidol)Control (Placebo)
MFI-20 scores at Visit 256.51 ± 13.7157.14 ± 13.79
Difference at Visit 2 in comparison with Visit 1-3.26 ± 9.58-1.68 ± 7.24
MFI-20 scores at Visit 453.44 ± 14.2055.23 ± 14.14
Difference at Visit 4 in comparison with Visit 1-6.37 ± 11.61-3.81 ± 10.15
MFI-20 scores at Visit 551.47 ± 13.8954.24 ± 14.00
Difference at Visit 5 in comparison with Visit 1-8.33 ± 12.68-4.80 ± 11.42
SecondaryChanges in the Anxiety Level According to the Beck Anxiety Inventory

The Beck Anxiety Inventory (BAI) consists of 21 self-reported items (four-point scale) used to assess the intensity of physical and cognitive anxiety symptoms during the past week. Scores may range from 0 to 63: minimal anxiety levels (0-7), mild anxiety (8-15), moderate anxiety (16-25), and severe anxiety (26-63).

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Changes in the Anxiety Level According to the Beck Anxiety Inventory
score on a scaleMain (Mexidol)Control (Placebo)
BAI scores at Visit 29.97 ± 8.1010.08 ± 7.23
Difference at Visit 2 in comparison with Visit 1-1.88 ± 5.10-1.11 ± 5.54
BAI scores at Visit 48.10 ± 7.049.14 ± 7.13
Difference at Visit 4 in comparison with Visit 1-3.77 ± 5.09-2.02 ± 5.98
BAI scores at Visit 57.07 ± 6.428.90 ± 7.15
Difference at Visit 5 in comparison with Visit 1-4.70 ± 5.49-2.26 ± 7.10
SecondaryAutonomic Changes According to the A.M.Wein's Questionnaire

The A.M.Wein's questionnaire is used between Visit 1 and Visit 2, 4, 5. It includes 11 main signs of autonomic disorders. Each autonomic symptom is assessed using scores from 7 to 3, then the scores are summed. Scores may range from 0 to 60, higher scores mean a worse outcome. The total sum of the scores in healthy individuals should be 0-14 scores. 15-29 scores are indicative of moderate vegetative dystonia syndrome, 30 and more scores are indicative of severe vegetative dystonia syndrome.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Autonomic Changes According to the A.M.Wein's Questionnaire
score on a scaleMain (Mexidol)Control (Placebo)
Wein's questionnaire, Visit 223.58 ± 13.6824.11 ± 12.61
Difference at Visit 2 in comparison with Visit 1-3.01 ± 7.71-2.18 ± 8.01
Wein's questionnaire, Visit 421.37 ± 13.8022.89 ± 12.61
Difference at Visit 4 in comparison with Visit 1-5.23 ± 9.19-3.42 ± 10.23
Wein's questionnaire, Visit 519.70 ± 13.9222.01 ± 13.07
Difference at Visit 5 in comparison with Visit 1-6.76 ± 10.94-4.30 ± 10.81
SecondaryChanges in Cognitive Impairment Assessed With Digit Symbol Substitution Test

The Digit Symbol Substitution Test is used between Visit 1 and Visits 2, 4, 5. The DSST is used to measure attention, processing speed and executive function. It is a pencil and paper test of psychomotor performance in which the subject is given a key grid of numbers and matching symbols and a test section with numbers and empty boxes. The test consists of filling as many empty boxes as possible with a symbol matching each number. The score is the number of correct number-symbol matches achieved in 90 s. Scores range from 0 to 100, with higher scores indicating higher cognitive function.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Changes in Cognitive Impairment Assessed With Digit Symbol Substitution Test
score on a scaleMain (Mexidol)Control (Placebo)
DSST, Visit 236.94 ± 10.8236.33 ± 11.84
Difference at Visit 2 in comparison with Visit 14.11 ± 6.632.61 ± 7.18
DSST, Visit 439.80 ± 10.7837.89 ± 11.78
Difference at Visit 4 in comparison with Visit 16.91 ± 8.104.24 ± 8.77
DSST, Visit 542.72 ± 12.5339.05 ± 12.36
Difference at Visit 5 in comparison with Visit 19.84 ± 10.505.40 ± 10.15
SecondaryMotor Changes Assessed With the Tinetti Test

The Tinetti test is used between Visit 1 and Visits 2, 4, 5. The Tinetti test is a clinical test for the assessment of balance and gait. It has a gait score and a balance score using a 3-point ordinal scale of 0, 1 and 2. Gait is scored over 12 and balance is scored over 16 totalling 28. The lower the score on the Tinetti test, the higher the risk of falling. Tinetti test score equal or less than 18 shows high risk of fall, 19-23 scores show moderate risk of fall, and score equal or higher than 24 shows low risk of fall. Thus, min value is 0, max value is 28, higher scores mean a better outcome.

Time frame:
Day 14 (Visit 2), Day 44±2 (Visit 4), Day 75+2 (Visit 5) compared with the baseline level (Visit 1, Day 1 of treatment)
Reported as:
Mean · score on a scale
Motor Changes Assessed With the Tinetti Test
score on a scaleMain (Mexidol)Control (Placebo)
Tinetti test, Visit 234.26 ± 4.9234.00 ± 4.75
Difference at Visit 2 in comparison with Visit 11.62 ± 2.470.71 ± 2.84
Tinetti test, Visit 435.06 ± 4.5734.39 ± 4.47
Difference at Visit 4 in comparison with Visit 12.44 ± 3.201.18 ± 3.51
Tinetti test, Visit 535.97 ± 4.2634.75 ± 4.42
Difference at Visit 5 in comparison with Visit 13.36 ± 3.391.55 ± 4.05
SecondaryChange in Global Illness Severity Assessed With the Clinical Global Impressions Scale at Visit 5 Compared to Baseline Measure

The Clinical Global Impressions Scale is a standardized assessment tool used to rate the severity of illness, change over time, and efficacy of medication. The interpretation of scores is as follows: 00 - Not assessed 01 - Vast improvement. Side effects - None. 03 - Vast improvement. Side effects - Significantly interfere with patient's therapeutic patient's functioning 04 - Vast improvement. Side effects - outweights therapeutic effect 05 - Decided improvement. Side effects - none 09 - Slight improvement. Side effects - none 10 - Slight improvement. Side effects - do not significantly interfere with patient's functioning 13 - Slight improvement. Side effects - none

Time frame:
Day 75+2 (Visit 5)
Reported as:
Count of participants · Participants
Change in Global Illness Severity Assessed With the Clinical Global Impressions Scale at Visit 5 Compared to Baseline Measure
ParticipantsMain (Mexidol)Control (Placebo)
01457
0310
0401
053916
095456
1030
131575

Adverse events

Collected over From Day 1 (Visit 1) to Day 75+2 (Visit 5) or Early Termination Visit. Non-serious events are listed at a 1% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Main (Mexidol)0/159 (0%)0/159 (0%)19/159 (11.9%)
Control (Placebo)0/159 (0%)0/159 (0%)32/159 (20.1%)
Most frequent other events
Showing 10 of 32
Most frequent other events
EventMain (Mexidol)Control (Placebo)
Itchy throatRespiratory, thoracic and mediastinal disorders4/1590/159
Respiratory infectionRespiratory, thoracic and mediastinal disorders1/1593/159
High levels of alanine aminotransferaseInvestigations0/1593/159
DyspepsiaGastrointestinal disorders2/1591/159
Itchy noseRespiratory, thoracic and mediastinal disorders2/1590/159
ArthralgiaMusculoskeletal and connective tissue disorders2/1591/159
DysgeusiaRespiratory, thoracic and mediastinal disorders2/1590/159
DizzinessNervous system disorders1/1592/159
High blood pressureCardiac disorders0/1592/159
High levels of aspartate aminotransferaseInvestigations0/1592/159

Baseline characteristics

ITT-population was used for description of baseline measures.

Age, Categorical
Age, Categorical(Participants)Main (Mexidol)Control (Placebo)Total
<=18 years000
Between 18 and 65 years10499203
>=65 years5560115
Age, Continuous
Age, Continuous(Years)Main (Mexidol)Control (Placebo)Total
Mean60.08 ± 9.8660.73 ± 9.0360.44 ± 9.59
Sex: Female, Male
Sex: Female, Male(Participants)Main (Mexidol)Control (Placebo)Total
Female119121240
Male403878
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Main (Mexidol)Control (Placebo)Total
American Indian or Alaska Native000
Asian10818
Native Hawaiian or Other Pacific Islander000
Black or African American000
White149151300
More than one race000
Unknown or Not Reported000
Region of Enrollment
Region of Enrollment(Participants)Main (Mexidol)Control (Placebo)Total
Russia151151302
Uzbekistan8816
The Montreal Cognitive Assessment scores at Visit 0 (7 days before treatment)
The Montreal Cognitive Assessment scores at Visit 0 (7 days before treatment)(score on a scale)Main (Mexidol)Control (Placebo)Total
Mean21.53 ± 2.2721.80 ± 1.9621.67 ± 2.13
The SF-36 questionnaire scores at Visit 1 (Day 1 of treatment)
The SF-36 questionnaire scores at Visit 1 (Day 1 of treatment)(score on a scale)Main (Mexidol)Control (Placebo)Total
The SF-36 questionnaire: physical health44.21 ± 8.5844.12 ± 7.9244.21 ± 8.28
The SF-36 questionnaire: mental health44.12 ± 9.1844.95 ± 9.2044.51 ± 9.18
The Multidimensional Fatigue Inventory scores at Visit 1 (Day 1 of treatment)
The Multidimensional Fatigue Inventory scores at Visit 1 (Day 1 of treatment)(score on a scale)Main (Mexidol)Control (Placebo)Total
Mean59.77 ± 13.3558.79 ± 13.7859.25 ± 13.55

4 further baseline measures are reported on the registry.

08

Study locations

14 sites
  • Municipal Autonomous Healthcare Insitution of the Order of the Red Banner of Labour "City Clinical Hospital No.1"
    Chelyabinsk, 454092, Russia
  • Regional Budget Healthcare Institution "Ivanovo Regional Clinical Hospital"
    Ivanovo, 152040, Russia
  • Federal State Budget Educational Institution of Higher Education "Kazan State Medical University"
    Kazan', 420012, Russia
  • Federal State Budget Research Institution "Research Center of Neurology"
    Moscow, 125367, Russia
  • Federal State Budget Educational Institution of Further Professional Education "Russian Medical Academy of Continuous Professional Education"
    Moscow, 125445, Russia
  • State Budget Healthcare Institution of the Novosibirsk Region "City Hospital № 34"
    Novosibirsk, 630054, Russia
  • Federal State Budget Research Institution "Federal Research Center for Fundamental and Translational Medicine"
    Novosibirsk, 630117, Russia
  • Federal State Budget Military Educational Institution of Higher Education "Military Medical Academy n.a. S.M.Kirov"
    Saint Petersburg, 194044, Russia
  • City Hospital No.40 of the Kurortny District
    Sestroretsk, 197706, Russia
  • Private Healthcare Institution "Clinical Hospital "RR-Medicine" of Voronezh
    Voronezh, 394024, Russia
  • OOO "Centre for Evidence-Based Medicine"
    Yaroslavl, 150000, Russia
  • State Budget Healthcare Institution of the Yaroslavl Region "Clinical Hospital No.2"
    Yaroslavl, 150030, Russia
  • State Budget Healthcare Institution of the Sverdlovsk Region "Sverdlovsk Regional Clinical Hospital No.1"
    Yekaterinburg, 620102, Russia
  • Centre for Neurology and Neurorehabilitation n.a. N. M. Madzhido, OOO "Neyromed Servis"
    Tashkent, 100187, Uzbekistan
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2019 to primary completion in Dec 2020, 13 months.

Results were first posted in Oct 2025, 4 years 9 months after primary completion.

Of 12 phase 3 interventional studies under Ischemia, half reached primary completion within 40 months of starting (the median), counting those still running; a quarter within 21 and three quarters within 51. This study's 13 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 11, 2025
First posted
Feb 19, 2025
StartActual
Nov 5, 2019
Primary completionActual
Dec 8, 2020
CompletionActual
Dec 8, 2020
Results first posted
Oct 6, 2025
Last update
Oct 6, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Oct 6, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT06834490
Lead sponsor
Pharmasoft
Responsible party
Sponsor
First posted
Feb 19, 2025
Start date
Nov 5, 2019
Primary completion
Dec 8, 2020
Completion
Dec 8, 2020
Results posted
Oct 6, 2025
Last update
Oct 6, 2025

Study contacts

Alina S. Agafina, MD, Cand.Med.Sci
principal investigator · Saint Petersburg State Budget Healthcare Institution "City Hospital No.40 of the Kurortny District"
Elena V. Vostrikova, MD, Cand.Med.Sci
principal investigator · State Budget Healthcare Institution of the Nivisibirsk Region "City Hospital No.34"
Andrey M. Alasheev, MD, Dr.Med.Sci
principal investigator · State Budget Healthcare Institution of the Sverdlovsk Region "Sverdlovsk Regional Clinical Hospital No.1"
Marine M. Tanashyan, Prof., Dr.Med.Sci
principal investigator · Federal State Budget Research Institution "Research Center of Neurology"
Min G. Omelyanenko, MD, Dr.Med.Sci
principal investigator · Regional Budget Healthcare Institution "Ivanovo Regional Clinical Hospital"
Stanislav O. Pozdnyakov, MD, Cand.Med.Sci
principal investigator · OOO "Centre for Evidence-Based Medicine"
Aleksandr Y. Malygin, MD, Dr.Med.Sci
principal investigator · State Budget Healthcare Institution of the Yaroslavl Region "Clinical Hospital No.2"
Aida A. Yakupova, MD, Cand.Med.Sci
principal investigator · Federal State Budget Educational Institution of Higher Education "Kazan State Meical University"
Igor V. Litvinenko, Prof., Dr.Med.Sci
principal investigator · Federal State Budget Military Educational Institution of Higher Education "Military Medical Academy n.a. S.M.Kirov"
Irina G. Lukashevich, MD
principal investigator · Municipal Autonomous Healthcare Insitution of the Order of the Red Banner of Labour "City Clinical Hospital No.1"
Olga A. Sinitsyna, MD, Cand.Med.Sci
principal investigator · State Budget Healthcare Institution of the Yaroslavl Region "Clinical Hospital No.2"
Larisa A. Shchepankevich, MD, Dr.Med.Sci
principal investigator · Federal State Budget Research Institution "Federal Research Center for Fundamental and Translational Medicine"
Galina A. Batishcheva, Prof., Dr.Med.Sci
principal investigator · Private Healthcare Institution "Clinical Hospital "RR-Medicine" of Voronezh
Olga D. Ostroumova, Prof., Dr.Med.Sci
principal investigator · Federal State Budget Educational Institution of Further Professional Education "Russian Medical Academy of Continuous Professional Education"
Yokutkhon N. Madzhidova, Prof., Dr.Med.Sci
principal investigator · Centre for Neurology and Neurorehabilitation n.a. N.M.Madzhido, OOO "Neyromed Servis"

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Sep 2025. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Emoxypine succinate

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