Attention deficit disorder is a disorder of the central nervous system that inhibits an individual's ability to perform executive functions, such concentrating, managing time or making thoughtful decisions. Although there are many causes of adult ADD, AddultADD.info notes that studies indicate the most common contributing factor is genetics. About 4 percent of adults are affected with ADD.
Strattera
ADD is believed to be related to low levels of norepinephrine, according to eNotAlone. (reference 2) Strattera, a selective norepinephrine reuptake inhibitor, prevents the depletion of norepinephrine and strengthens the chemical signal between neurons that use norepinephrine to transmit messages, according to Northern County Psychiatric Associates. This effectively reduces the difficulty with executive functions, such as planning and maintaining focus. Additionally, Strattera causes a secondary increase in levels of dopamine in the prefrontal cortex of the brain. This increase in dopamine is associated with the ability to mentally rehearse responses and control impulsive behavior. Some common side effects associated with Strattera include nausea, decreased appetite, dry mouth and dizziness.
Focalin XR
According to RxList.com, Focalin XR is a psycho-stimulant drug that inhibits the transport of dopamine and norepinephrine by transporters that reduce its time and activity in the brain. It strengthens the chemical signal between neurons that use norepinephrine and dopamine to transmit messages and effectively reduces the associated difficulty with executive functions. Focalin XR is available in five strengths: 5, 10, 15, 20 and 30mg. Although the side effects of Focalin XR are generally mild, they include nausea, nervousness, irritability and dizziness.
Concerta
Concerta is a central nervous system stimulant. It works in the treatment of ADD by increasing attention and decreasing restlessness in overactive adults, notes Drugs.com. Concerta, a time-release drug, comes in four strengths of 18, 27, 36 and 54mg, and it is effective for up to 12 hours. The most common side effect of Concerta is an increased heartbeat.


