l carnitine cause seizures Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health L-Carnitine Side Effects & Safety:

Unlike symptomatic treatments (gabapentinoids, duloxetine), ALC promotes actual nerve fiber regeneration and addresses underlying pathophysiology.[17][2] This disease-modifying potential makes it particularly valuable for early intervention

Armour Thyroid and NP Thyroid are dosed in the same way with equivalent doses

L-carnitine is a proven ergogenic aid and has an arsenal of evidence that shows it can promote fat loss, optimize workout recovery, and enhance endurance in athletes

Furthermore, some supplements marketed for "thyroid support" contained actual thyroid hormones , which can pose a risk if the hormone amounts are less or more than needed