Compositions and methods for increasing dopamine levels in a subject. What is claimed is: (1). A pharmaceutical composition for treating a symptom in a mammal by increasing one or more neurotransmitter levels, comprising an effective amount of (-)-hydroxycitric acid sufficient to increase levels of dopamine or serotonin in the mammal's brain. (2). The composition of claim 1, wherein the symptom is of Parkinson's disease or Alzheimer's disease. (3). The composition of claim 1, wherein the symptom is of attention deficit disorder (ADD). (4). The composition of claim 1, wherein the symptom is of attention deficit/hyperactivity disorder (ADHD). (5). The composition of claim 1, wherein the symptom is of obsessive/compulsive disorders. (6). The composition of claim 1, wherein the symptom is of eating disorders. (7). The composition of claim 6, wherein the eating disorders is binge eating. (8). The composition of claim 1, wherein the symptom is of depression. (9). The composition of claim 1, wherein the symptom is of bipolar disorders. (10). The composition of claim 1, wherein the symptom is of schizophrenia. (11). The composition of claim 1, wherein the symptom is a dysfunctional cognitive skill.
Methods for increasing neurotransmitter levels using hydroxycitric acid