It has been observed that despite administration of apparently adequate thyroid hormone replacement in hypothyroid patients, many of them experience persistent fatigue and fatigue-related symptoms. Carnitine transports long chain fatty acids into the mitochondria whereupon the high energy source (ATP) becomes synthesized. Levocarnitine administration reduced fatigue related symptoms in hypothyroid patients receiving thyroid hormone replacement. The present study deals with alleviation of fatigue in hypothyroid patients by carnitine supplimentation.