New study tests safer version of muscle stiffness drug

NCT ID NCT07097701

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new extended-release form of mexiletine (mexiletine PR) against the standard immediate-release version in people with non-dystrophic myotonias, a group of rare genetic disorders that cause muscle stiffness. About 24 adults aged 16 and older will take each version for 12 weeks to see which is safer and better tolerated. The goal is to find a treatment that controls symptoms with fewer side effects.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

Myotonia nondystrophic myotonia paramyotonia congenita of Von Eulenburg SCN4A-related channelopathy Thomsen and Becker disease

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Universitair Ziekenhuis Leuven"UZ Leuven Gasthuisberg Campus Herestraat 49 Leuven, 3000"

    RECRUITING

    Leuven, Belgium

    Contact

    Contact