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Trends in central nervous system-active polypharmacy among people with multiple sclerosis
Hayden Naizer1,2, Joseph Wozny3, Trudy Millard Krause3
1Department of Neurology, Dell Medical School, The University of Texas at Austin, Austin, TX, USA.
The use of multiple central nervous system (CNS)-active drugs by people with multiple sclerosis (MS) has increased, particularly in women. This trend highlights a growing disparity in CNS-active polypharmacy among MS patients.
Area of Science:
- Neurology
- Pharmacology
- Public Health
Background:
- People with multiple sclerosis (MS) face a significant risk of using multiple central nervous system (CNS)-active medications concurrently.
- The actual prevalence of this CNS-active polypharmacy in MS patients has not been previously quantified.
Purpose of the Study:
- To determine the prevalence of CNS-active polypharmacy among people with MS.
- To analyze trends and demographic differences in CNS-active polypharmacy over time.
Main Methods:
- A serial, cross-sectional study analyzed US insurance claims data from 2008 to 2021.
- CNS-active polypharmacy was defined as concurrent prescriptions for three or more CNS-active drugs for over 30 days.
- Included CNS drugs: antidepressants, antiepileptics, antipsychotics, benzodiazepines, hypnotics, opioids, and skeletal muscle relaxants.
Main Results:
- The study included between 23,917 (2008) and 55,797 (2021) subjects.
- In 2021, individuals with CNS-active polypharmacy were more likely to be aged 46-65 and have CNS-related comorbidities.
- Age-adjusted prevalence of CNS-active polypharmacy increased from 19.8% to 26.4% in females and 15.9% to 18.6% in males between 2008 and 2021.
Conclusions:
- CNS-active polypharmacy is increasing among people with MS.
- A notable and growing disparity in CNS-active polypharmacy prevalence exists between female and male MS patients.
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