hi anjuthi, welcome, Ubidecarenone (Another name for Coenzyme Q10) and L-Carnitine are nutritional supplements, both of these elements occur naturally in the body and not having enough of them can contribute to some medical problems. The ubidecarenone requirements can increase in normal subjects who are subjected to intense physical fatigue or in subjects suffering from cardiovascular disorders, chronic debilitating diseases or subjected to chronic pharmacological treatments. Particularly, a lack in ubidecarenone has been evidenced in ischaemic cardiopathy, in senile miocardiosclerosis and in hypertensive cardiopathy L-Carnitine tab provide a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production. it is using in the field of body building thanking you