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More recent trials have associated oral propionyl-L-carnitine supplementation (2 g/day for several months) with improved walking distance and claudication onset time (66, 67), as well as with higher pain-free walking distance and higher ankle-brachial index (a diagnostic measure of peripheral arterial disease) (68)

10.1016/j.micron.2009.08.010 Micron

Of note, supplementation with L-carnitine was given in patients with cirrhosis to control hyperammonemia (N=27), to reduce muscle cramps (N=6), or to prevent carnitine deficiency (N=2)

Selenium supplementation in the treatment of hashimotos thyroiditis: A systematic review and a meta-analysis

Hyperandrogenism contributes by increasing HDL catabolism through upregulation of scavenger receptor B1 and hepatic lipase, and by attenuating LDL-R mediated LDL clearance [388]

Additionally, certain pharmacological agents, including cisplatin, downregulate renal OCTN2 expression, increasing urinary carnitine excretion and potential deficiency states (19)