Satisfaction With Orodispersible vs Conventional Memantine in Moderate to Severe Alzheimer's Disease

COMPARATIVE STUDY TO EVALUATE SATISFACTION WITH THE USE OF ORODISPERSIBLE MEMANTINE TABLETS VERSUS CONVENTIONAL TABLETS IN PATIENTS WITH MODERATE TO SEVERE ALZHEIMER'S DISEASE: A PHASE IV, RANDOMIZED, OPEN-LABEL STUDY.

The goal of this clinical study is to evaluate satisfaction with the use of orodispersible Memantine (OD) versus conventional Memantine tablets (MTb) using the validate SATMED-Q in patients with moderate to severe Alzheimer's disease. Due to the neurocognitive impairment associated with these stages of the disease, treatment satisfaction will be assessed indirectly through the primary caregiver.

The main questions this study seeks to answer are:

• Is caregiver satisfaction higher with OD (Sinolvir®) compared with MTb?
• What adverse events or side effects occur in patients receiving memantine in either pharmaceutical form?

Researchers will compare OD (Sinolvir®) and MTb to identify differences in caregiver satisfaction and to describe the adverse events reported. Satisfaction will be evaluated across the six domains of the SATMED-Q questionnaire, and results will be summarized by domain and by pharmaceutical dosage form.

All adverse events reported during the study will be documented.

Participants will receive Sinolvir®(OD) or Eutebrol® (MTb) daily, according to dosing regimens determined by the treating physicians based on the approved prescribing information. The duration of participation will be two months.

After two months of treatment, eligible primary caregivers will complete the SATMED-Q questionnaire. Caregivers will be invited to participate at Visit 1 and will complete the satisfaction questionnaire at Visit 2, which will be conducted between days 60 and 70 after Visit 1.

Study Overview

• Status: Completed
• Conditions: Alzheimer Disease
• Intervention / Treatment: Drug: Memantine; Drug: Memantine Oral Tablet

• Study Type: Interventional
• Enrollment (Actual): 105
• Phase: Phase 4

Contacts and Locations

Study Locations

• Mexico
  • Mexico City, Mexico, 10700
    • Hospital Ángeles del Pedregal
  • Coahuila
    • Saltillo, Coahuila, Mexico, 44670
      • Private Practice
  • Jalisco
    • Guadalajara, Jalisco, Mexico, 44670
      • Private Geriatrics Practice
  • Nuevo León
    • Monterrey, Nuevo León, Mexico, 64520
      • Private Practice

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Older Adult
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

• Patients with a diagnosis of Alzheimer's disease were selected according to the criteria of the National Institute of Neurological and Communicative Disorders and Stroke and the Alzheimer's Disease and Related Disorders Association (NINCDS-ADRDA).
• Patients had moderate to severe Alzheimer's disease, based on the following assessments:

Mini-Mental State Examination (MMSE) score ≤ 18 in patients with more than 12 years of education; or Montreal Cognitive Assessment (MoCA) score ≤ 18 in patients with more than 12 years of education.

Katz Index of Activities of Daily Living score ≤ 6 and Lawton Instrumental Activities of Daily Living scale score < 6 out of 8.

Clinical Dementia Rating (CDR) scale score of 2 or 3.

• Patients were considered eligible when memantine was selected as the therapeutic option for Alzheimer's disease, according to the treating physician's clinical judgment.
• Only patients who were prescribed memantine for the first time were included.
• Patients were included if they attended the clinical visit accompanied by their primary caregiver, and if the caregiver agreed to participate and signed the corresponding informed consent.
• The primary caregiver had Spanish as their native language or demonstrated functional proficiency in the language.

Exclusion Criteria:

• Patients with a diagnosis of preclinical Alzheimer's disease were excluded.
• Patients with a diagnosis of Alzheimer's disease at a stage other than moderate to severe were excluded, based on any of the following scales:

Mini-Mental State Examination (MMSE) score > 18; or Montreal Cognitive Assessment (MoCA) score > 18.

• Patients with uncontrolled depression (including major depressive disorder) within the last three months were excluded, according to:

Geriatric Depression Scale (GDS) (Yesavage), short form, score ≥ 10.

• Patients with uncontrolled anxiety within the last three months were excluded, according to:

Hamilton Anxiety Rating Scale (HAM-A) score ≥ 8.

• Patients with contraindications or any other condition preventing the use of memantine, in accordance with the approved prescribing information for SINOLVIR® or EUTEBROL®, were excluded.
• Primary caregivers who refused to participate or who were unable to complete the study due to severe sensory impairment or for any other reason were excluded.
• Patients with psychiatric disorders or symptoms of non-Alzheimer's disease origin that were active or decompensated at study entry (e.g., delirium, schizophrenia) were excluded.
• Patients with active alcohol use at study entry were excluded.
• Patients with unstable or uncontrolled neurological conditions, such as active autoimmune or infectious encephalitis, uncontrolled epilepsy, uncontrolled multiple sclerosis, or uncontrolled amyotrophic lateral sclerosis, were excluded.
• Patients with active brain neoplasms at study entry were excluded.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Supportive Care
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Active Comparator: Group OD (Orodispersible Memantine); Sinolvir® (Orodispersible Memantine) 10 mg.	Drug: Memantine; orodispersible memantine administered according to a dose titration schedule.
Active Comparator: Group MTb (conventional Memantine Tablets); Eutebrol® (conventional Memantine Tablets) 10 mg.	Drug: Memantine Oral Tablet; Conventional memantine tablets administered according to a dose titration schedule.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Caregiver treatment satisfaction assessed by the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q)	Treatment satisfaction will be assessed using the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q). The SATMED-Q consists of 17 items grouped into six predefined domains evaluating different aspects of treatment satisfaction, including medication undesirable effects, effectiveness, convenience, impact on daily life, medical follow-up, and overall opinion. Responses to all 17 items will be collected and summarized by domain according to the orodispersible memantine (OD) (Sinolvir®) or conventional Memantine tablets (MTb). The questionnaire will be administered by the treating physician to the patient's primary caregiver and will represent the sole assessment performed in this study. It will be completed within 10 days after completion of treatment with the study medication, specifically between Day 71 and Day 80 following treatment initiation.	Between Day 71 and Day 80 after treatment initiation.

Collaborators and Investigators

• Sponsor: Carnot Laboratories
• Investigators: Principal Investigator: Alberto Mimenza Alvarado, Dr.

Publications and helpful links

General Publications

• Affoo RH, Foley N, Rosenbek J, Kevin Shoemaker J, Martin RE. Swallowing dysfunction and autonomic nervous system dysfunction in Alzheimer's disease: a scoping review of the evidence. J Am Geriatr Soc. 2013 Dec;61(12):2203-2213. doi: 10.1111/jgs.12553.

Study record dates

Study Major Dates

• Study Start (Actual): October 4, 2024
• Primary Completion (Actual): August 12, 2025
• Study Completion (Actual): August 18, 2025

Study Registration Dates

• First Submitted: February 11, 2026
• First Submitted That Met QC Criteria: February 11, 2026
• First Posted (Actual): February 18, 2026

Study Record Updates

• Last Update Posted (Actual): February 18, 2026
• Last Update Submitted That Met QC Criteria: February 11, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Mental Disorders; Neurocognitive Disorders; Dementia; Tauopathies; Neurodegenerative Diseases; Alzheimer Disease; Organic Chemicals; Hydrocarbons; Hydrocarbons, Cyclic; Adamantane; Bridged-Ring Compounds; Amantadine; Memantine
• Other Study ID Numbers: PEO-CAR-MEM-01-2023

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No