Dietary supplement composition, characterized in that it comprises: • (A) at least one agent that promotes the synthesis of ATP and/or creatinine phosphate in the body, in a proportion between 1.38 and 2.76% of the overall weight of the composition, wherein the component ( A ) comprises one or more members selected from the group consisting of nicotinamide adenine dinucleotide (NADH) and NAD + , • (B) at least one antioxidant for reducing or eliminating the free radicals in at least one pathway in the body and normalizing the balance of oxidative stress, thereby improving cellular mitochondrial function, in a proportion between 13.8 and 27.6% of the overall weight of the composition, • (C) at least one agent for normalizing or maintaining normal neurotransmitter function; normal protein synthesis; psychological function and normal muscle contraction in the body, in a proportion between 5.70 and 11.39% of the overall weight of the composition, wherein the component ( C ) comprises one or more members selected from the group consisting of magnesium citrate and magnesium malate, • (D) at least one agent for normalizing or maintaining the production of serotonin, melatonin and niacin in the human body, in a proportion between 20.69 and 41.38% of the overall weight of the composition, wherein the component ( D ) comprises one or more members selected from the group consisting of tryptophan, L-tryptophan and L-5-hydroxytryptophan, 5-HTP, • wherein the component ( B ) comprises one or more members selected from the group consisting of co-enzyme Q10 or ubiquinone, ubiquinol, riboflavin, selenium, vitamin C, vitamin E, zinc.. • (A) at least one agent that promotes the synthesis of ATP and/or creatinine phosphate in the body, in a proportion between 1.38 and 2.76% of the overall weight of the composition, wherein the component ( A ) comprises one or more members selected from the group consisting of nicotinamide adenine dinucleotide (NADH) and NAD + , • (B) at least one antioxidant for reducing or eliminating the free radicals in at least one pathway in the body and normalizing the balance of oxidative stress, thereby improving cellular mitochondrial function, in a proportion between 13.8 and 27.6% of the overall weight of the composition, • (C) at least one agent for normalizing or maintaining normal neurotransmitter function; normal protein synthesis; psychological function and normal muscle contraction in the body, in a proportion between 5.70 and 11.39% of the overall weight of the composition, wherein the component ( C ) comprises one or more members selected from the group consisting of magnesium citrate and magnesium malate, • (D) at least one agent for normalizing or maintaining the production of serotonin, melatonin and niacin in the human body, in a proportion between 20.69 and 41.38% of the overall weight of the composition, wherein the component ( D ) comprises one or more members selected from the group consisting of tryptophan, L-tryptophan and L-5-hydroxytryptophan, 5-HTP, • wherein the component ( B ) comprises one or more members selected from the group consisting of co-enzyme Q10 or ubiquinone, ubiquinol, riboflavin, selenium, vitamin C, vitamin E, zinc.. <EOS>