Methylphenidate and Its Impact on Redox Balance and Behavior
George Jîtcă1, Ingrid Evelin Mehelean2, Ana Natalia Maier2
1Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mureș, 540139 Târgu Mureș, Romania.
Journal of Xenobiotics
|October 28, 2025
Summary
Methylphenidate (MPH) for ADHD has risks with non-medical use, causing mitochondrial issues and neurotoxicity. Gut microbiome and forensic analysis offer insights for safer use and abuse monitoring.
Area of Science:
- Neuroscience
- Pharmacology
- Forensic Toxicology
Background:
- Methylphenidate (MPH) and dexmethylphenidate are primary ADHD treatments.
- Non-medical use presents clinical and toxicological concerns.
- MPH targets dopamine (DAT) and norepinephrine (NET) transporters.
Purpose of the Study:
- Investigate MPH's therapeutic efficacy versus toxicological risks.
- Explore the gut-brain axis influence on MPH outcomes.
- Review forensic methods for detecting MPH misuse.
Main Methods:
- Literature review on MPH pharmacology, toxicology, and gut-brain interactions.
- Analysis of current forensic techniques for MPH detection (e.g., LC-MS/MS, hair analysis).
- Examination of studies on mitochondrial function and ROS production related to MPH exposure.
Main Results:
- MPH's mechanism involves blocking DAT and NET, increasing catecholamines.
- Prolonged/abusive MPH use linked to mitochondrial dysfunction, bioenergetic disruption, and ROS production.
- Gut microbiome composition influences MPH metabolism, oxidative stress, and neuroinflammation.
- Advanced forensic methods improve MPH abuse surveillance.
Conclusions:
- MPH has a narrow therapeutic window, balancing benefit and risk.
- The gut-brain axis presents potential intervention targets (diet, probiotics).
- Further research needed on longitudinal human studies, biomarkers, and mitochondria-targeted therapies for MPH safety.
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