The use of the word âprobablyâ in the sentence below indicates that the evidence is fairly strong. In the second sentence, the more tentative word âcouldâ was selected, indicating that the evidence is weak. The fire was probably caused by a fault in the engine temperature gauge.
There are several types of depression medications (antidepressants) used to treat depression and conditions that have depression as a component of the disease, such as bipolar disorder. These drugs improve symptoms of depression by increasing the availability of certain brain chemicals called neurotransmitters. It is believed that these brain chemicals can help regulate brain circuits that affect emotions. Major types of antidepressants include: 1  Tricyclic antidepressants (TCAs) are some of the first antidepressants used to treat depression.
Some research has reported that depression may be the result of an imbalance of the brain chemicals known as neurotransmitters. Many popular antidepressant medications on the market are designed to affect the brain chemical serotonin. Wellbutrin is different, as it does not deal with serotonin levels. Instead of serotonin, Wellbutrin is designed to help restore the balance of the brain chemicals known as dopamine and norepinepherine.