It has been well-established now-a-days that, some chronic diseases impose generalized weakness, lethargy, lassitude amounting from degrees mild, moderate to a severe one to total incapacitation on the part of the patients. Hypothyroid patients inspite of receiving adequate thyroid hormone replacement, experience fatigue-related symptoms. Carnitine is a non-essential amino acid synthesized endogenously from essential amino acids- lysine and methionine with in the body involved in long chain fatty acid transportation to the mitochondrial membrane. Carnitine- transportation system is essential for production of energy at cellular level. Thyroid hormone plays an important role in carnitine-dependent long chain fatty acid transport and oxidation. Some available reports suggest that, Levocarnitine supplimentation produced potentially favourable effects on fatigue-related symptoms in hypothyroid patients although still awaits confirmation. The present study is an attempt to investigate into the effects of Levocarnitine supplementation on fatigue in patients with hypothyroidism.