Active Ingredient: LEVOTHYROXINE
(Hérité de L-THYROXIN HENNING 112 microgrammes) Hypothyroidism is a well-documented cause of QT prolongation and Torsades de Pointes. Treatment appears to shorten the QT interval through a mechanism that remains unclear.
https://doi.org/10.3346/jkms.2007.22.1.114, https://doi.org/10.4158/ep.13.7.711, https://doi.org/10.3389/fendo.2021.758043