is l carnitine good for underactive thyroid L Carnitine Interaction Thyroid Hormone
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Journal of the International Society of Sports Nutrition, 17(1)

Do not start a slimming or high-protein diet, Drink plenty of water (more than a liter and a half per day), especially on an empty stomach, fruit juices, to promote hydration of the food bolus, Rest must be preserved as much as possible

doi: 10.1111/j.1749-6632.2000.tb06638.x 76 NicolsonG

Pogocki D, Schneich C

Serum vitamin B12 and folic acid levels in hyperthyroidism

Clinical trial research supports this, suggesting that ALC can offer more extensive health benefits compared to L-carnitine
